./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 14558cb0aef5bf60b4a230892060936885d87372f6515d5d8ad78f7b805ad735 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:03:30,849 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:03:30,927 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-29 03:03:30,932 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:03:30,932 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:03:30,962 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:03:30,963 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:03:30,963 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:03:30,964 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:03:30,965 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:03:30,966 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:03:30,966 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:03:30,967 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:03:30,968 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:03:30,969 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:03:30,969 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:03:30,970 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 03:03:30,970 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:03:30,971 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 03:03:30,972 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:03:30,972 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 03:03:30,973 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 03:03:30,974 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 03:03:30,974 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:03:30,975 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 03:03:30,975 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 03:03:30,976 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 03:03:30,976 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:03:30,977 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:03:30,977 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:03:30,978 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:03:30,978 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:03:30,979 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:03:30,979 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:03:30,980 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:03:30,980 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 03:03:30,981 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 03:03:30,981 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:03:30,981 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:03:30,981 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:03:30,981 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:03:30,982 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_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14558cb0aef5bf60b4a230892060936885d87372f6515d5d8ad78f7b805ad735 [2023-11-29 03:03:31,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:03:31,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:03:31,285 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:03:31,287 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:03:31,287 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:03:31,289 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-2.i [2023-11-29 03:03:34,304 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:03:34,668 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:03:34,669 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-2.i [2023-11-29 03:03:34,691 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/data/3f98ff759/f71b4804372d4f049dc309d933057fcc/FLAGd7397eac5 [2023-11-29 03:03:34,705 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/data/3f98ff759/f71b4804372d4f049dc309d933057fcc [2023-11-29 03:03:34,708 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:03:34,710 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:03:34,711 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:03:34,712 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:03:34,717 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:03:34,717 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:03:34" (1/1) ... [2023-11-29 03:03:34,718 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@240a6efa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:03:34, skipping insertion in model container [2023-11-29 03:03:34,718 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:03:34" (1/1) ... [2023-11-29 03:03:34,787 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:03:35,463 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:03:35,475 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-29 03:03:35,476 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@307a6df0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:03:35, skipping insertion in model container [2023-11-29 03:03:35,476 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:03:35,476 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-29 03:03:35,478 INFO L158 Benchmark]: Toolchain (without parser) took 767.25ms. Allocated memory is still 180.4MB. Free memory was 139.6MB in the beginning and 109.5MB in the end (delta: 30.1MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2023-11-29 03:03:35,478 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 180.4MB. Free memory is still 153.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 03:03:35,479 INFO L158 Benchmark]: CACSL2BoogieTranslator took 764.69ms. Allocated memory is still 180.4MB. Free memory was 139.6MB in the beginning and 109.5MB in the end (delta: 30.1MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2023-11-29 03:03:35,480 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 180.4MB. Free memory is still 153.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 764.69ms. Allocated memory is still 180.4MB. Free memory was 139.6MB in the beginning and 109.5MB in the end (delta: 30.1MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 734]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 14558cb0aef5bf60b4a230892060936885d87372f6515d5d8ad78f7b805ad735 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:03:37,484 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:03:37,573 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-29 03:03:37,580 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:03:37,581 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:03:37,613 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:03:37,614 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:03:37,615 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:03:37,616 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:03:37,616 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:03:37,617 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:03:37,617 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:03:37,618 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:03:37,619 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:03:37,619 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:03:37,620 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:03:37,621 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 03:03:37,621 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:03:37,622 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 03:03:37,622 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:03:37,623 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 03:03:37,624 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 03:03:37,624 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 03:03:37,625 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:03:37,625 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 03:03:37,626 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 03:03:37,626 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 03:03:37,627 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 03:03:37,627 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 03:03:37,628 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:03:37,628 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:03:37,629 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:03:37,629 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:03:37,629 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:03:37,630 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:03:37,630 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:03:37,630 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:03:37,631 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 03:03:37,631 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 03:03:37,631 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:03:37,631 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:03:37,632 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:03:37,632 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:03:37,632 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 03:03:37,632 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_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14558cb0aef5bf60b4a230892060936885d87372f6515d5d8ad78f7b805ad735 [2023-11-29 03:03:37,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:03:37,958 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:03:37,961 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:03:37,962 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:03:37,962 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:03:37,964 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-2.i [2023-11-29 03:03:40,985 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:03:41,325 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:03:41,326 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-2.i [2023-11-29 03:03:41,350 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/data/62a8aca9b/770580d690814736a1c0bef0b074fa9a/FLAG4d80bc633 [2023-11-29 03:03:41,364 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/data/62a8aca9b/770580d690814736a1c0bef0b074fa9a [2023-11-29 03:03:41,367 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:03:41,369 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:03:41,371 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:03:41,371 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:03:41,376 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:03:41,376 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:03:41" (1/1) ... [2023-11-29 03:03:41,377 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fbc0df3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:03:41, skipping insertion in model container [2023-11-29 03:03:41,378 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:03:41" (1/1) ... [2023-11-29 03:03:41,495 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:03:42,278 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:03:42,293 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-29 03:03:42,314 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:03:42,479 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:03:42,485 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:03:42,616 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:03:42,654 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 03:03:42,663 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:03:42,664 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:03:42 WrapperNode [2023-11-29 03:03:42,664 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:03:42,665 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:03:42,666 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:03:42,666 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:03:42,675 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:03:42" (1/1) ... [2023-11-29 03:03:42,736 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:03:42" (1/1) ... [2023-11-29 03:03:42,840 INFO L138 Inliner]: procedures = 180, calls = 576, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2370 [2023-11-29 03:03:42,841 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:03:42,841 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:03:42,842 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:03:42,842 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:03:42,854 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:03:42" (1/1) ... [2023-11-29 03:03:42,855 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:03:42" (1/1) ... [2023-11-29 03:03:42,869 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:03:42" (1/1) ... [2023-11-29 03:03:43,100 INFO L175 MemorySlicer]: Split 538 memory accesses to 5 slices as follows [2, 106, 5, 5, 420]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 96 writes are split as follows [0, 4, 1, 1, 90]. [2023-11-29 03:03:43,100 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:03:42" (1/1) ... [2023-11-29 03:03:43,101 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:03:42" (1/1) ... [2023-11-29 03:03:43,166 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:03:42" (1/1) ... [2023-11-29 03:03:43,189 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:03:42" (1/1) ... [2023-11-29 03:03:43,197 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:03:42" (1/1) ... [2023-11-29 03:03:43,210 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:03:42" (1/1) ... [2023-11-29 03:03:43,226 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:03:43,227 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:03:43,227 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:03:43,227 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:03:43,228 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:03:42" (1/1) ... [2023-11-29 03:03:43,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:03:43,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:03:43,265 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:03:43,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:03:43,310 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-11-29 03:03:43,310 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-11-29 03:03:43,310 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-11-29 03:03:43,310 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-11-29 03:03:43,310 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2023-11-29 03:03:43,311 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2023-11-29 03:03:43,311 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2023-11-29 03:03:43,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-29 03:03:43,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-29 03:03:43,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-29 03:03:43,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-29 03:03:43,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-11-29 03:03:43,312 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 03:03:43,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 03:03:43,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2023-11-29 03:03:43,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2023-11-29 03:03:43,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2023-11-29 03:03:43,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2023-11-29 03:03:43,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#4 [2023-11-29 03:03:43,313 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2023-11-29 03:03:43,313 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2023-11-29 03:03:43,313 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2023-11-29 03:03:43,313 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2023-11-29 03:03:43,314 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#4 [2023-11-29 03:03:43,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 03:03:43,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 03:03:43,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 03:03:43,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 03:03:43,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 03:03:43,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-29 03:03:43,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-29 03:03:43,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 03:03:43,315 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-29 03:03:43,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 03:03:43,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 03:03:43,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 03:03:43,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-29 03:03:43,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-29 03:03:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 03:03:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-29 03:03:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-29 03:03:43,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-29 03:03:43,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-29 03:03:43,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-11-29 03:03:43,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 03:03:43,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-29 03:03:43,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-29 03:03:43,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-29 03:03:43,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-11-29 03:03:43,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:03:43,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:03:43,662 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:03:43,664 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:03:43,740 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-29 03:03:43,771 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-29 03:03:43,797 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-29 03:03:43,822 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-29 03:03:43,845 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-29 03:03:53,680 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:03:53,986 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:03:53,987 INFO L309 CfgBuilder]: Removed 160 assume(true) statements. [2023-11-29 03:03:53,988 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:03:53 BoogieIcfgContainer [2023-11-29 03:03:53,988 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:03:53,991 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:03:53,991 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:03:53,994 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:03:53,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:03:41" (1/3) ... [2023-11-29 03:03:53,995 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4853441a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:03:53, skipping insertion in model container [2023-11-29 03:03:53,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:03:42" (2/3) ... [2023-11-29 03:03:53,995 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4853441a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:03:53, skipping insertion in model container [2023-11-29 03:03:53,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:03:53" (3/3) ... [2023-11-29 03:03:53,997 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test10-2.i [2023-11-29 03:03:54,017 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:03:54,018 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1095 error locations. [2023-11-29 03:03:54,097 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:03:54,104 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;@6195e6f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:03:54,104 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1095 error locations. [2023-11-29 03:03:54,114 INFO L276 IsEmpty]: Start isEmpty. Operand has 2056 states, 949 states have (on average 2.4731296101159117) internal successors, (2347), 2042 states have internal predecessors, (2347), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-29 03:03:54,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-29 03:03:54,119 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:03:54,120 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-29 03:03:54,120 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2023-11-29 03:03:54,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:03:54,124 INFO L85 PathProgramCache]: Analyzing trace with hash 120481, now seen corresponding path program 1 times [2023-11-29 03:03:54,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:03:54,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2006956802] [2023-11-29 03:03:54,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:03:54,138 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:03:54,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:03:54,141 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:03:54,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-29 03:03:54,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:03:54,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:03:54,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:03:54,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 03:03:54,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:03:54,566 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:03:54,567 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:03:54,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2006956802] [2023-11-29 03:03:54,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2006956802] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:03:54,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:03:54,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 03:03:54,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445939954] [2023-11-29 03:03:54,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:03:54,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:03:54,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:03:54,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:03:54,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:03:54,615 INFO L87 Difference]: Start difference. First operand has 2056 states, 949 states have (on average 2.4731296101159117) internal successors, (2347), 2042 states have internal predecessors, (2347), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:03:59,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:03:59,709 INFO L93 Difference]: Finished difference Result 2671 states and 2854 transitions. [2023-11-29 03:03:59,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:03:59,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-11-29 03:03:59,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:03:59,762 INFO L225 Difference]: With dead ends: 2671 [2023-11-29 03:03:59,763 INFO L226 Difference]: Without dead ends: 2670 [2023-11-29 03:03:59,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:03:59,769 INFO L413 NwaCegarLoop]: 1169 mSDtfsCounter, 1956 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 1488 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1966 SdHoareTripleChecker+Valid, 1565 SdHoareTripleChecker+Invalid, 1511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-29 03:03:59,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1966 Valid, 1565 Invalid, 1511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1488 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-11-29 03:03:59,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2670 states. [2023-11-29 03:03:59,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2670 to 2169. [2023-11-29 03:03:59,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2169 states, 1086 states have (on average 2.2744014732965008) internal successors, (2470), 2153 states have internal predecessors, (2470), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 03:03:59,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2169 states to 2169 states and 2502 transitions. [2023-11-29 03:03:59,961 INFO L78 Accepts]: Start accepts. Automaton has 2169 states and 2502 transitions. Word has length 2 [2023-11-29 03:03:59,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:03:59,962 INFO L495 AbstractCegarLoop]: Abstraction has 2169 states and 2502 transitions. [2023-11-29 03:03:59,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:03:59,963 INFO L276 IsEmpty]: Start isEmpty. Operand 2169 states and 2502 transitions. [2023-11-29 03:03:59,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-29 03:03:59,964 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:03:59,964 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-29 03:03:59,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-29 03:04:00,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:04:00,166 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2023-11-29 03:04:00,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:04:00,167 INFO L85 PathProgramCache]: Analyzing trace with hash 120482, now seen corresponding path program 1 times [2023-11-29 03:04:00,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:04:00,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [323771409] [2023-11-29 03:04:00,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:04:00,168 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:04:00,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:04:00,169 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:04:00,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-29 03:04:00,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:04:00,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 03:04:00,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:04:00,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 03:04:00,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:04:00,318 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:04:00,318 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:04:00,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [323771409] [2023-11-29 03:04:00,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [323771409] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:04:00,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:04:00,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 03:04:00,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342604899] [2023-11-29 03:04:00,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:04:00,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:04:00,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:04:00,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:04:00,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:04:00,322 INFO L87 Difference]: Start difference. First operand 2169 states and 2502 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:04:08,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:04:08,385 INFO L93 Difference]: Finished difference Result 3055 states and 3480 transitions. [2023-11-29 03:04:08,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:04:08,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-11-29 03:04:08,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:04:08,398 INFO L225 Difference]: With dead ends: 3055 [2023-11-29 03:04:08,399 INFO L226 Difference]: Without dead ends: 3055 [2023-11-29 03:04:08,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:04:08,400 INFO L413 NwaCegarLoop]: 1615 mSDtfsCounter, 970 mSDsluCounter, 1091 mSDsCounter, 0 mSdLazyCounter, 1636 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 2706 SdHoareTripleChecker+Invalid, 1643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-11-29 03:04:08,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [974 Valid, 2706 Invalid, 1643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1636 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2023-11-29 03:04:08,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3055 states. [2023-11-29 03:04:08,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3055 to 2550. [2023-11-29 03:04:08,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2550 states, 1465 states have (on average 2.2150170648464163) internal successors, (3245), 2531 states have internal predecessors, (3245), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-29 03:04:08,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2550 states to 2550 states and 3283 transitions. [2023-11-29 03:04:08,482 INFO L78 Accepts]: Start accepts. Automaton has 2550 states and 3283 transitions. Word has length 2 [2023-11-29 03:04:08,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:04:08,482 INFO L495 AbstractCegarLoop]: Abstraction has 2550 states and 3283 transitions. [2023-11-29 03:04:08,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:04:08,483 INFO L276 IsEmpty]: Start isEmpty. Operand 2550 states and 3283 transitions. [2023-11-29 03:04:08,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-29 03:04:08,483 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:04:08,483 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 03:04:08,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-29 03:04:08,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:04:08,684 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2023-11-29 03:04:08,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:04:08,685 INFO L85 PathProgramCache]: Analyzing trace with hash -400808213, now seen corresponding path program 1 times [2023-11-29 03:04:08,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:04:08,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [315067582] [2023-11-29 03:04:08,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:04:08,686 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:04:08,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:04:08,687 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:04:08,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-29 03:04:08,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:04:08,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 03:04:08,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:04:08,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 03:04:08,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 03:04:09,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:04:09,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-29 03:04:09,042 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 03:04:09,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-29 03:04:09,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:04:09,063 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:04:09,064 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:04:09,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [315067582] [2023-11-29 03:04:09,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [315067582] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:04:09,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:04:09,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:04:09,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756742760] [2023-11-29 03:04:09,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:04:09,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:04:09,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:04:09,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:04:09,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:04:09,067 INFO L87 Difference]: Start difference. First operand 2550 states and 3283 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:04:22,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:04:22,030 INFO L93 Difference]: Finished difference Result 4946 states and 5849 transitions. [2023-11-29 03:04:22,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:04:22,031 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-29 03:04:22,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:04:22,054 INFO L225 Difference]: With dead ends: 4946 [2023-11-29 03:04:22,055 INFO L226 Difference]: Without dead ends: 4946 [2023-11-29 03:04:22,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:04:22,056 INFO L413 NwaCegarLoop]: 632 mSDtfsCounter, 4462 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 3101 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4472 SdHoareTripleChecker+Valid, 1839 SdHoareTripleChecker+Invalid, 3143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 3101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2023-11-29 03:04:22,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4472 Valid, 1839 Invalid, 3143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 3101 Invalid, 0 Unknown, 0 Unchecked, 12.8s Time] [2023-11-29 03:04:22,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4946 states. [2023-11-29 03:04:22,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4946 to 3132. [2023-11-29 03:04:22,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3132 states, 2047 states have (on average 2.263312164142648) internal successors, (4633), 3107 states have internal predecessors, (4633), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-29 03:04:22,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3132 states to 3132 states and 4683 transitions. [2023-11-29 03:04:22,157 INFO L78 Accepts]: Start accepts. Automaton has 3132 states and 4683 transitions. Word has length 6 [2023-11-29 03:04:22,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:04:22,158 INFO L495 AbstractCegarLoop]: Abstraction has 3132 states and 4683 transitions. [2023-11-29 03:04:22,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:04:22,158 INFO L276 IsEmpty]: Start isEmpty. Operand 3132 states and 4683 transitions. [2023-11-29 03:04:22,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 03:04:22,159 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:04:22,159 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:04:22,163 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-29 03:04:22,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:04:22,361 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2023-11-29 03:04:22,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:04:22,362 INFO L85 PathProgramCache]: Analyzing trace with hash 459847323, now seen corresponding path program 1 times [2023-11-29 03:04:22,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:04:22,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1249187415] [2023-11-29 03:04:22,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:04:22,363 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:04:22,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:04:22,364 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:04:22,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-29 03:04:22,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:04:22,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:04:22,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:04:22,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 03:04:22,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:04:22,604 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:04:22,605 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:04:22,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1249187415] [2023-11-29 03:04:22,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1249187415] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:04:22,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:04:22,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:04:22,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934417779] [2023-11-29 03:04:22,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:04:22,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:04:22,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:04:22,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:04:22,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:04:22,607 INFO L87 Difference]: Start difference. First operand 3132 states and 4683 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:04:27,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:04:27,411 INFO L93 Difference]: Finished difference Result 4202 states and 6066 transitions. [2023-11-29 03:04:27,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:04:27,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-29 03:04:27,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:04:27,433 INFO L225 Difference]: With dead ends: 4202 [2023-11-29 03:04:27,433 INFO L226 Difference]: Without dead ends: 4202 [2023-11-29 03:04:27,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:04:27,435 INFO L413 NwaCegarLoop]: 1808 mSDtfsCounter, 1812 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 1579 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1822 SdHoareTripleChecker+Valid, 2468 SdHoareTripleChecker+Invalid, 1681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:04:27,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1822 Valid, 2468 Invalid, 1681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1579 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-11-29 03:04:27,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4202 states. [2023-11-29 03:04:27,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4202 to 3041. [2023-11-29 03:04:27,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3041 states, 2047 states have (on average 2.159257449926722) internal successors, (4420), 3016 states have internal predecessors, (4420), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-29 03:04:27,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3041 states to 3041 states and 4470 transitions. [2023-11-29 03:04:27,545 INFO L78 Accepts]: Start accepts. Automaton has 3041 states and 4470 transitions. Word has length 7 [2023-11-29 03:04:27,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:04:27,546 INFO L495 AbstractCegarLoop]: Abstraction has 3041 states and 4470 transitions. [2023-11-29 03:04:27,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:04:27,546 INFO L276 IsEmpty]: Start isEmpty. Operand 3041 states and 4470 transitions. [2023-11-29 03:04:27,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 03:04:27,547 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:04:27,547 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:04:27,550 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-11-29 03:04:27,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:04:27,748 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2023-11-29 03:04:27,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:04:27,749 INFO L85 PathProgramCache]: Analyzing trace with hash 459847324, now seen corresponding path program 1 times [2023-11-29 03:04:27,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:04:27,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1086322391] [2023-11-29 03:04:27,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:04:27,749 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:04:27,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:04:27,750 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:04:27,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-29 03:04:27,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:04:27,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 03:04:27,899 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:04:27,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 03:04:27,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:04:27,935 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:04:27,936 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:04:27,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1086322391] [2023-11-29 03:04:27,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1086322391] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:04:27,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:04:27,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:04:27,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009076829] [2023-11-29 03:04:27,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:04:27,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:04:27,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:04:27,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:04:27,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:04:27,939 INFO L87 Difference]: Start difference. First operand 3041 states and 4470 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:04:35,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:04:35,611 INFO L93 Difference]: Finished difference Result 4554 states and 6626 transitions. [2023-11-29 03:04:35,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:04:35,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-29 03:04:35,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:04:35,634 INFO L225 Difference]: With dead ends: 4554 [2023-11-29 03:04:35,634 INFO L226 Difference]: Without dead ends: 4554 [2023-11-29 03:04:35,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:04:35,635 INFO L413 NwaCegarLoop]: 2121 mSDtfsCounter, 1249 mSDsluCounter, 909 mSDsCounter, 0 mSdLazyCounter, 1738 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1253 SdHoareTripleChecker+Valid, 3030 SdHoareTripleChecker+Invalid, 1761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:04:35,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1253 Valid, 3030 Invalid, 1761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1738 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2023-11-29 03:04:35,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4554 states. [2023-11-29 03:04:35,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4554 to 3297. [2023-11-29 03:04:35,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3297 states, 2313 states have (on average 2.146995244271509) internal successors, (4966), 3272 states have internal predecessors, (4966), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-29 03:04:35,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3297 states to 3297 states and 5016 transitions. [2023-11-29 03:04:35,700 INFO L78 Accepts]: Start accepts. Automaton has 3297 states and 5016 transitions. Word has length 7 [2023-11-29 03:04:35,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:04:35,701 INFO L495 AbstractCegarLoop]: Abstraction has 3297 states and 5016 transitions. [2023-11-29 03:04:35,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:04:35,701 INFO L276 IsEmpty]: Start isEmpty. Operand 3297 states and 5016 transitions. [2023-11-29 03:04:35,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-29 03:04:35,702 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:04:35,702 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:04:35,705 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-29 03:04:35,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:04:35,905 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr658REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2023-11-29 03:04:35,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:04:35,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1990383632, now seen corresponding path program 1 times [2023-11-29 03:04:35,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:04:35,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [549561803] [2023-11-29 03:04:35,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:04:35,907 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:04:35,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:04:35,908 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:04:35,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-29 03:04:36,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:04:36,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 03:04:36,100 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:04:36,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:04:36,110 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:04:36,110 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:04:36,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [549561803] [2023-11-29 03:04:36,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [549561803] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:04:36,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:04:36,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:04:36,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838384887] [2023-11-29 03:04:36,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:04:36,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:04:36,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:04:36,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:04:36,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:04:36,112 INFO L87 Difference]: Start difference. First operand 3297 states and 5016 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:04:37,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:04:37,938 INFO L93 Difference]: Finished difference Result 3243 states and 4936 transitions. [2023-11-29 03:04:37,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:04:37,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-29 03:04:37,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:04:37,954 INFO L225 Difference]: With dead ends: 3243 [2023-11-29 03:04:37,954 INFO L226 Difference]: Without dead ends: 3243 [2023-11-29 03:04:37,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:04:37,955 INFO L413 NwaCegarLoop]: 1798 mSDtfsCounter, 70 mSDsluCounter, 1749 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 3547 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 03:04:37,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 3547 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 03:04:37,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3243 states. [2023-11-29 03:04:37,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3243 to 3243. [2023-11-29 03:04:37,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3243 states, 2283 states have (on average 2.140166447656592) internal successors, (4886), 3218 states have internal predecessors, (4886), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-29 03:04:38,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3243 states to 3243 states and 4936 transitions. [2023-11-29 03:04:38,008 INFO L78 Accepts]: Start accepts. Automaton has 3243 states and 4936 transitions. Word has length 10 [2023-11-29 03:04:38,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:04:38,008 INFO L495 AbstractCegarLoop]: Abstraction has 3243 states and 4936 transitions. [2023-11-29 03:04:38,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:04:38,009 INFO L276 IsEmpty]: Start isEmpty. Operand 3243 states and 4936 transitions. [2023-11-29 03:04:38,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-29 03:04:38,009 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:04:38,010 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:04:38,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-11-29 03:04:38,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:04:38,210 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr683REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2023-11-29 03:04:38,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:04:38,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1498168437, now seen corresponding path program 1 times [2023-11-29 03:04:38,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:04:38,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [231935953] [2023-11-29 03:04:38,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:04:38,212 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:04:38,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:04:38,213 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:04:38,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-29 03:04:38,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:04:38,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:04:38,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:04:38,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:04:38,481 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:04:38,481 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:04:38,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [231935953] [2023-11-29 03:04:38,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [231935953] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:04:38,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:04:38,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:04:38,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352227962] [2023-11-29 03:04:38,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:04:38,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:04:38,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:04:38,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:04:38,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:04:38,483 INFO L87 Difference]: Start difference. First operand 3243 states and 4936 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:04:40,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:04:40,790 INFO L93 Difference]: Finished difference Result 3229 states and 4894 transitions. [2023-11-29 03:04:40,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:04:40,792 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-29 03:04:40,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:04:40,805 INFO L225 Difference]: With dead ends: 3229 [2023-11-29 03:04:40,805 INFO L226 Difference]: Without dead ends: 3229 [2023-11-29 03:04:40,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:04:40,806 INFO L413 NwaCegarLoop]: 1767 mSDtfsCounter, 58 mSDsluCounter, 3510 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 5277 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:04:40,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 5277 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-29 03:04:40,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3229 states. [2023-11-29 03:04:40,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3229 to 3227. [2023-11-29 03:04:40,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3227 states, 2281 states have (on average 2.122753178430513) internal successors, (4842), 3202 states have internal predecessors, (4842), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-29 03:04:40,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3227 states to 3227 states and 4892 transitions. [2023-11-29 03:04:40,877 INFO L78 Accepts]: Start accepts. Automaton has 3227 states and 4892 transitions. Word has length 12 [2023-11-29 03:04:40,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:04:40,877 INFO L495 AbstractCegarLoop]: Abstraction has 3227 states and 4892 transitions. [2023-11-29 03:04:40,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:04:40,878 INFO L276 IsEmpty]: Start isEmpty. Operand 3227 states and 4892 transitions. [2023-11-29 03:04:40,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-29 03:04:40,879 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:04:40,879 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:04:40,883 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-11-29 03:04:41,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:04:41,080 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr334REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2023-11-29 03:04:41,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:04:41,080 INFO L85 PathProgramCache]: Analyzing trace with hash 985655251, now seen corresponding path program 1 times [2023-11-29 03:04:41,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:04:41,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1095355041] [2023-11-29 03:04:41,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:04:41,081 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:04:41,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:04:41,082 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:04:41,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-29 03:04:41,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:04:41,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 03:04:41,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:04:41,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:04:41,405 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:04:41,405 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:04:41,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1095355041] [2023-11-29 03:04:41,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1095355041] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:04:41,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:04:41,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:04:41,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630168353] [2023-11-29 03:04:41,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:04:41,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:04:41,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:04:41,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:04:41,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:04:41,408 INFO L87 Difference]: Start difference. First operand 3227 states and 4892 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:04:43,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:04:43,078 INFO L93 Difference]: Finished difference Result 3113 states and 4652 transitions. [2023-11-29 03:04:43,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:04:43,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-29 03:04:43,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:04:43,092 INFO L225 Difference]: With dead ends: 3113 [2023-11-29 03:04:43,093 INFO L226 Difference]: Without dead ends: 3113 [2023-11-29 03:04:43,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:04:43,094 INFO L413 NwaCegarLoop]: 1740 mSDtfsCounter, 70 mSDsluCounter, 1691 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 3431 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:04:43,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 3431 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 03:04:43,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3113 states. [2023-11-29 03:04:43,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3113 to 3113. [2023-11-29 03:04:43,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3113 states, 2191 states have (on average 2.100410771337289) internal successors, (4602), 3088 states have internal predecessors, (4602), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-29 03:04:43,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3113 states to 3113 states and 4652 transitions. [2023-11-29 03:04:43,149 INFO L78 Accepts]: Start accepts. Automaton has 3113 states and 4652 transitions. Word has length 17 [2023-11-29 03:04:43,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:04:43,149 INFO L495 AbstractCegarLoop]: Abstraction has 3113 states and 4652 transitions. [2023-11-29 03:04:43,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:04:43,150 INFO L276 IsEmpty]: Start isEmpty. Operand 3113 states and 4652 transitions. [2023-11-29 03:04:43,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-29 03:04:43,151 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:04:43,151 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:04:43,154 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-11-29 03:04:43,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:04:43,352 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2023-11-29 03:04:43,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:04:43,352 INFO L85 PathProgramCache]: Analyzing trace with hash 781184659, now seen corresponding path program 1 times [2023-11-29 03:04:43,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:04:43,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1432239293] [2023-11-29 03:04:43,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:04:43,353 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:04:43,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:04:43,354 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:04:43,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-29 03:04:43,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:04:43,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 03:04:43,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:04:43,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:04:43,580 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:04:43,580 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:04:43,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1432239293] [2023-11-29 03:04:43,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1432239293] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:04:43,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:04:43,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:04:43,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242495517] [2023-11-29 03:04:43,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:04:43,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:04:43,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:04:43,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:04:43,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:04:43,583 INFO L87 Difference]: Start difference. First operand 3113 states and 4652 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:04:45,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:04:45,202 INFO L93 Difference]: Finished difference Result 3059 states and 4572 transitions. [2023-11-29 03:04:45,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:04:45,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-29 03:04:45,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:04:45,211 INFO L225 Difference]: With dead ends: 3059 [2023-11-29 03:04:45,211 INFO L226 Difference]: Without dead ends: 3059 [2023-11-29 03:04:45,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:04:45,212 INFO L413 NwaCegarLoop]: 1703 mSDtfsCounter, 70 mSDsluCounter, 1654 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 3357 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:04:45,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 3357 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 03:04:45,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3059 states. [2023-11-29 03:04:45,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3059 to 3059. [2023-11-29 03:04:45,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3059 states, 2161 states have (on average 2.0925497454882) internal successors, (4522), 3034 states have internal predecessors, (4522), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-29 03:04:45,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3059 states to 3059 states and 4572 transitions. [2023-11-29 03:04:45,286 INFO L78 Accepts]: Start accepts. Automaton has 3059 states and 4572 transitions. Word has length 17 [2023-11-29 03:04:45,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:04:45,286 INFO L495 AbstractCegarLoop]: Abstraction has 3059 states and 4572 transitions. [2023-11-29 03:04:45,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:04:45,287 INFO L276 IsEmpty]: Start isEmpty. Operand 3059 states and 4572 transitions. [2023-11-29 03:04:45,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-29 03:04:45,288 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:04:45,288 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:04:45,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-11-29 03:04:45,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:04:45,493 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr358REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2023-11-29 03:04:45,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:04:45,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1973049491, now seen corresponding path program 1 times [2023-11-29 03:04:45,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:04:45,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1518891305] [2023-11-29 03:04:45,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:04:45,494 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:04:45,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:04:45,495 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:04:45,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-29 03:04:45,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:04:45,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:04:45,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:04:45,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:04:45,723 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:04:45,723 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:04:45,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1518891305] [2023-11-29 03:04:45,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1518891305] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:04:45,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:04:45,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:04:45,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455204784] [2023-11-29 03:04:45,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:04:45,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:04:45,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:04:45,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:04:45,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:04:45,725 INFO L87 Difference]: Start difference. First operand 3059 states and 4572 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:04:47,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:04:47,934 INFO L93 Difference]: Finished difference Result 3045 states and 4446 transitions. [2023-11-29 03:04:47,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:04:47,936 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-11-29 03:04:47,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:04:47,943 INFO L225 Difference]: With dead ends: 3045 [2023-11-29 03:04:47,943 INFO L226 Difference]: Without dead ends: 3045 [2023-11-29 03:04:47,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:04:47,944 INFO L413 NwaCegarLoop]: 1672 mSDtfsCounter, 58 mSDsluCounter, 3320 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 4992 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:04:47,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 4992 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-29 03:04:47,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3045 states. [2023-11-29 03:04:47,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3045 to 3039. [2023-11-29 03:04:47,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3039 states, 2155 states have (on average 2.0371229698375872) internal successors, (4390), 3014 states have internal predecessors, (4390), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-29 03:04:47,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3039 states to 3039 states and 4440 transitions. [2023-11-29 03:04:47,986 INFO L78 Accepts]: Start accepts. Automaton has 3039 states and 4440 transitions. Word has length 19 [2023-11-29 03:04:47,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:04:47,987 INFO L495 AbstractCegarLoop]: Abstraction has 3039 states and 4440 transitions. [2023-11-29 03:04:47,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:04:47,987 INFO L276 IsEmpty]: Start isEmpty. Operand 3039 states and 4440 transitions. [2023-11-29 03:04:47,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-29 03:04:47,988 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:04:47,988 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:04:47,992 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-11-29 03:04:48,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:04:48,188 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2023-11-29 03:04:48,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:04:48,189 INFO L85 PathProgramCache]: Analyzing trace with hash -900820883, now seen corresponding path program 1 times [2023-11-29 03:04:48,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:04:48,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [364382961] [2023-11-29 03:04:48,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:04:48,190 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:04:48,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:04:48,191 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:04:48,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-29 03:04:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:04:48,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:04:48,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:04:48,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:04:48,432 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:04:48,432 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:04:48,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [364382961] [2023-11-29 03:04:48,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [364382961] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:04:48,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:04:48,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:04:48,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412399418] [2023-11-29 03:04:48,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:04:48,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:04:48,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:04:48,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:04:48,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:04:48,434 INFO L87 Difference]: Start difference. First operand 3039 states and 4440 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:04:50,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:04:50,541 INFO L93 Difference]: Finished difference Result 3025 states and 4398 transitions. [2023-11-29 03:04:50,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:04:50,543 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-11-29 03:04:50,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:04:50,551 INFO L225 Difference]: With dead ends: 3025 [2023-11-29 03:04:50,551 INFO L226 Difference]: Without dead ends: 3025 [2023-11-29 03:04:50,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:04:50,552 INFO L413 NwaCegarLoop]: 1651 mSDtfsCounter, 58 mSDsluCounter, 3278 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 4929 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:04:50,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 4929 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-29 03:04:50,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3025 states. [2023-11-29 03:04:50,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3025 to 3023. [2023-11-29 03:04:50,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3023 states, 2153 states have (on average 2.018578727357176) internal successors, (4346), 2998 states have internal predecessors, (4346), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-29 03:04:50,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3023 states to 3023 states and 4396 transitions. [2023-11-29 03:04:50,607 INFO L78 Accepts]: Start accepts. Automaton has 3023 states and 4396 transitions. Word has length 19 [2023-11-29 03:04:50,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:04:50,607 INFO L495 AbstractCegarLoop]: Abstraction has 3023 states and 4396 transitions. [2023-11-29 03:04:50,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:04:50,608 INFO L276 IsEmpty]: Start isEmpty. Operand 3023 states and 4396 transitions. [2023-11-29 03:04:50,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-29 03:04:50,610 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:04:50,610 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:04:50,614 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-11-29 03:04:50,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:04:50,812 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr696REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2023-11-29 03:04:50,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:04:50,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1310859960, now seen corresponding path program 1 times [2023-11-29 03:04:50,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:04:50,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1854662368] [2023-11-29 03:04:50,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:04:50,813 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:04:50,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:04:50,814 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:04:50,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-29 03:04:51,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:04:51,039 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 03:04:51,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:04:51,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 03:04:51,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:04:51,119 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:04:51,119 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:04:51,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1854662368] [2023-11-29 03:04:51,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1854662368] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:04:51,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:04:51,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:04:51,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081534884] [2023-11-29 03:04:51,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:04:51,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:04:51,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:04:51,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:04:51,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:04:51,121 INFO L87 Difference]: Start difference. First operand 3023 states and 4396 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:04:56,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:04:56,280 INFO L93 Difference]: Finished difference Result 3445 states and 4724 transitions. [2023-11-29 03:04:56,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:04:56,281 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-11-29 03:04:56,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:04:56,290 INFO L225 Difference]: With dead ends: 3445 [2023-11-29 03:04:56,290 INFO L226 Difference]: Without dead ends: 3445 [2023-11-29 03:04:56,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:04:56,291 INFO L413 NwaCegarLoop]: 1051 mSDtfsCounter, 1676 mSDsluCounter, 1301 mSDsCounter, 0 mSdLazyCounter, 2103 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1686 SdHoareTripleChecker+Valid, 2352 SdHoareTripleChecker+Invalid, 2116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:04:56,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1686 Valid, 2352 Invalid, 2116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2103 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-11-29 03:04:56,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3445 states. [2023-11-29 03:04:56,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3445 to 3019. [2023-11-29 03:04:56,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3019 states, 2153 states have (on average 2.0148629818857406) internal successors, (4338), 2994 states have internal predecessors, (4338), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-29 03:04:56,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3019 states to 3019 states and 4388 transitions. [2023-11-29 03:04:56,331 INFO L78 Accepts]: Start accepts. Automaton has 3019 states and 4388 transitions. Word has length 26 [2023-11-29 03:04:56,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:04:56,332 INFO L495 AbstractCegarLoop]: Abstraction has 3019 states and 4388 transitions. [2023-11-29 03:04:56,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:04:56,332 INFO L276 IsEmpty]: Start isEmpty. Operand 3019 states and 4388 transitions. [2023-11-29 03:04:56,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-29 03:04:56,333 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:04:56,334 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:04:56,337 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-11-29 03:04:56,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:04:56,534 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr697REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2023-11-29 03:04:56,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:04:56,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1310859961, now seen corresponding path program 1 times [2023-11-29 03:04:56,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:04:56,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1465758238] [2023-11-29 03:04:56,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:04:56,536 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:04:56,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:04:56,537 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:04:56,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-29 03:04:56,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:04:56,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:04:56,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:04:56,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 03:04:56,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:04:56,896 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:04:56,896 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:04:56,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1465758238] [2023-11-29 03:04:56,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1465758238] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:04:56,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:04:56,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:04:56,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028412158] [2023-11-29 03:04:56,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:04:56,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:04:56,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:04:56,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:04:56,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:04:56,898 INFO L87 Difference]: Start difference. First operand 3019 states and 4388 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:05,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:05:05,405 INFO L93 Difference]: Finished difference Result 3844 states and 5297 transitions. [2023-11-29 03:05:05,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:05:05,406 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-11-29 03:05:05,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:05:05,414 INFO L225 Difference]: With dead ends: 3844 [2023-11-29 03:05:05,414 INFO L226 Difference]: Without dead ends: 3844 [2023-11-29 03:05:05,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:05:05,415 INFO L413 NwaCegarLoop]: 1368 mSDtfsCounter, 905 mSDsluCounter, 1808 mSDsCounter, 0 mSdLazyCounter, 2411 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 3176 SdHoareTripleChecker+Invalid, 2414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:05:05,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 3176 Invalid, 2414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2411 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2023-11-29 03:05:05,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3844 states. [2023-11-29 03:05:05,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3844 to 3052. [2023-11-29 03:05:05,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3052 states, 2186 states have (on average 2.001829826166514) internal successors, (4376), 3027 states have internal predecessors, (4376), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-29 03:05:05,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3052 states to 3052 states and 4426 transitions. [2023-11-29 03:05:05,459 INFO L78 Accepts]: Start accepts. Automaton has 3052 states and 4426 transitions. Word has length 26 [2023-11-29 03:05:05,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:05:05,460 INFO L495 AbstractCegarLoop]: Abstraction has 3052 states and 4426 transitions. [2023-11-29 03:05:05,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:05,460 INFO L276 IsEmpty]: Start isEmpty. Operand 3052 states and 4426 transitions. [2023-11-29 03:05:05,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-29 03:05:05,462 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:05:05,462 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:05:05,466 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-11-29 03:05:05,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:05:05,664 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr372REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2023-11-29 03:05:05,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:05:05,664 INFO L85 PathProgramCache]: Analyzing trace with hash -440270181, now seen corresponding path program 1 times [2023-11-29 03:05:05,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:05:05,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [214601355] [2023-11-29 03:05:05,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:05:05,665 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:05:05,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:05:05,666 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:05:05,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-29 03:05:05,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:05:05,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 03:05:05,945 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:05:05,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 03:05:06,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:05:06,040 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:05:06,040 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:05:06,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [214601355] [2023-11-29 03:05:06,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [214601355] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:05:06,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:05:06,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:05:06,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769781110] [2023-11-29 03:05:06,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:05:06,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:05:06,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:05:06,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:05:06,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:05:06,042 INFO L87 Difference]: Start difference. First operand 3052 states and 4426 transitions. Second operand has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:12,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:05:12,025 INFO L93 Difference]: Finished difference Result 4110 states and 5884 transitions. [2023-11-29 03:05:12,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:05:12,026 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-11-29 03:05:12,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:05:12,031 INFO L225 Difference]: With dead ends: 4110 [2023-11-29 03:05:12,031 INFO L226 Difference]: Without dead ends: 4110 [2023-11-29 03:05:12,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:05:12,032 INFO L413 NwaCegarLoop]: 1649 mSDtfsCounter, 1621 mSDsluCounter, 1922 mSDsCounter, 0 mSdLazyCounter, 2613 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1631 SdHoareTripleChecker+Valid, 3571 SdHoareTripleChecker+Invalid, 2631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-11-29 03:05:12,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1631 Valid, 3571 Invalid, 2631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2613 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-11-29 03:05:12,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4110 states. [2023-11-29 03:05:12,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4110 to 3049. [2023-11-29 03:05:12,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3049 states, 2186 states have (on average 1.9917657822506862) internal successors, (4354), 3024 states have internal predecessors, (4354), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-29 03:05:12,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3049 states to 3049 states and 4404 transitions. [2023-11-29 03:05:12,073 INFO L78 Accepts]: Start accepts. Automaton has 3049 states and 4404 transitions. Word has length 33 [2023-11-29 03:05:12,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:05:12,073 INFO L495 AbstractCegarLoop]: Abstraction has 3049 states and 4404 transitions. [2023-11-29 03:05:12,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:12,073 INFO L276 IsEmpty]: Start isEmpty. Operand 3049 states and 4404 transitions. [2023-11-29 03:05:12,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-29 03:05:12,075 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:05:12,075 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:05:12,079 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-11-29 03:05:12,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:05:12,275 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr373REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2023-11-29 03:05:12,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:05:12,276 INFO L85 PathProgramCache]: Analyzing trace with hash -440270180, now seen corresponding path program 1 times [2023-11-29 03:05:12,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:05:12,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [492156979] [2023-11-29 03:05:12,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:05:12,277 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:05:12,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:05:12,278 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:05:12,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-29 03:05:12,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:05:12,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:05:12,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:05:12,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 03:05:12,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:05:12,717 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:05:12,717 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:05:12,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [492156979] [2023-11-29 03:05:12,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [492156979] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:05:12,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:05:12,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:05:12,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889821822] [2023-11-29 03:05:12,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:05:12,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:05:12,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:05:12,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:05:12,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:05:12,719 INFO L87 Difference]: Start difference. First operand 3049 states and 4404 transitions. Second operand has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:21,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:05:21,662 INFO L93 Difference]: Finished difference Result 4186 states and 5874 transitions. [2023-11-29 03:05:21,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:05:21,663 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-11-29 03:05:21,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:05:21,668 INFO L225 Difference]: With dead ends: 4186 [2023-11-29 03:05:21,668 INFO L226 Difference]: Without dead ends: 4186 [2023-11-29 03:05:21,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:05:21,669 INFO L413 NwaCegarLoop]: 1960 mSDtfsCounter, 1042 mSDsluCounter, 2165 mSDsCounter, 0 mSdLazyCounter, 2785 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1046 SdHoareTripleChecker+Valid, 4125 SdHoareTripleChecker+Invalid, 2788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2023-11-29 03:05:21,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1046 Valid, 4125 Invalid, 2788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2785 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2023-11-29 03:05:21,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4186 states. [2023-11-29 03:05:21,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4186 to 3049. [2023-11-29 03:05:21,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3049 states, 2186 states have (on average 1.988106129917658) internal successors, (4346), 3024 states have internal predecessors, (4346), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-29 03:05:21,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3049 states to 3049 states and 4396 transitions. [2023-11-29 03:05:21,724 INFO L78 Accepts]: Start accepts. Automaton has 3049 states and 4396 transitions. Word has length 33 [2023-11-29 03:05:21,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:05:21,725 INFO L495 AbstractCegarLoop]: Abstraction has 3049 states and 4396 transitions. [2023-11-29 03:05:21,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:21,725 INFO L276 IsEmpty]: Start isEmpty. Operand 3049 states and 4396 transitions. [2023-11-29 03:05:21,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-29 03:05:21,726 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:05:21,727 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:05:21,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-11-29 03:05:21,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:05:21,927 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2023-11-29 03:05:21,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:05:21,928 INFO L85 PathProgramCache]: Analyzing trace with hash 352672603, now seen corresponding path program 1 times [2023-11-29 03:05:21,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:05:21,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1596913742] [2023-11-29 03:05:21,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:05:21,929 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:05:21,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:05:21,930 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:05:21,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-11-29 03:05:22,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:05:22,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 03:05:22,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:05:22,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 03:05:22,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:05:22,265 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:05:22,266 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:05:22,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1596913742] [2023-11-29 03:05:22,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1596913742] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:05:22,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:05:22,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:05:22,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125689657] [2023-11-29 03:05:22,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:05:22,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:05:22,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:05:22,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:05:22,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:05:22,267 INFO L87 Difference]: Start difference. First operand 3049 states and 4396 transitions. Second operand has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:28,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:05:28,082 INFO L93 Difference]: Finished difference Result 4090 states and 5852 transitions. [2023-11-29 03:05:28,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:05:28,083 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-11-29 03:05:28,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:05:28,087 INFO L225 Difference]: With dead ends: 4090 [2023-11-29 03:05:28,087 INFO L226 Difference]: Without dead ends: 4090 [2023-11-29 03:05:28,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:05:28,088 INFO L413 NwaCegarLoop]: 1651 mSDtfsCounter, 1599 mSDsluCounter, 1890 mSDsCounter, 0 mSdLazyCounter, 2600 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1609 SdHoareTripleChecker+Valid, 3541 SdHoareTripleChecker+Invalid, 2614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:05:28,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1609 Valid, 3541 Invalid, 2614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2600 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-11-29 03:05:28,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4090 states. [2023-11-29 03:05:28,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4090 to 3045. [2023-11-29 03:05:28,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3045 states, 2186 states have (on average 1.9844464775846296) internal successors, (4338), 3020 states have internal predecessors, (4338), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-29 03:05:28,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3045 states to 3045 states and 4388 transitions. [2023-11-29 03:05:28,129 INFO L78 Accepts]: Start accepts. Automaton has 3045 states and 4388 transitions. Word has length 33 [2023-11-29 03:05:28,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:05:28,129 INFO L495 AbstractCegarLoop]: Abstraction has 3045 states and 4388 transitions. [2023-11-29 03:05:28,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:28,130 INFO L276 IsEmpty]: Start isEmpty. Operand 3045 states and 4388 transitions. [2023-11-29 03:05:28,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-29 03:05:28,130 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:05:28,131 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:05:28,134 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-11-29 03:05:28,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:05:28,331 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2023-11-29 03:05:28,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:05:28,332 INFO L85 PathProgramCache]: Analyzing trace with hash 352672604, now seen corresponding path program 1 times [2023-11-29 03:05:28,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:05:28,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [745189676] [2023-11-29 03:05:28,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:05:28,332 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:05:28,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:05:28,333 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:05:28,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-29 03:05:28,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:05:28,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:05:28,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:05:28,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 03:05:28,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:05:28,835 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:05:28,835 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:05:28,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [745189676] [2023-11-29 03:05:28,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [745189676] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:05:28,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:05:28,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:05:28,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247011868] [2023-11-29 03:05:28,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:05:28,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:05:28,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:05:28,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:05:28,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:05:28,838 INFO L87 Difference]: Start difference. First operand 3045 states and 4388 transitions. Second operand has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:37,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:05:37,839 INFO L93 Difference]: Finished difference Result 4178 states and 5858 transitions. [2023-11-29 03:05:37,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:05:37,840 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-11-29 03:05:37,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:05:37,844 INFO L225 Difference]: With dead ends: 4178 [2023-11-29 03:05:37,844 INFO L226 Difference]: Without dead ends: 4178 [2023-11-29 03:05:37,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:05:37,845 INFO L413 NwaCegarLoop]: 1958 mSDtfsCounter, 1034 mSDsluCounter, 2132 mSDsCounter, 0 mSdLazyCounter, 2773 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1038 SdHoareTripleChecker+Valid, 4090 SdHoareTripleChecker+Invalid, 2776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2023-11-29 03:05:37,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1038 Valid, 4090 Invalid, 2776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2773 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2023-11-29 03:05:37,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4178 states. [2023-11-29 03:05:37,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4178 to 3041. [2023-11-29 03:05:37,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3041 states, 2186 states have (on average 1.980786825251601) internal successors, (4330), 3016 states have internal predecessors, (4330), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-29 03:05:37,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3041 states to 3041 states and 4380 transitions. [2023-11-29 03:05:37,897 INFO L78 Accepts]: Start accepts. Automaton has 3041 states and 4380 transitions. Word has length 33 [2023-11-29 03:05:37,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:05:37,897 INFO L495 AbstractCegarLoop]: Abstraction has 3041 states and 4380 transitions. [2023-11-29 03:05:37,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:37,898 INFO L276 IsEmpty]: Start isEmpty. Operand 3041 states and 4380 transitions. [2023-11-29 03:05:37,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-29 03:05:37,898 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:05:37,898 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:05:37,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-11-29 03:05:38,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:05:38,099 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr704REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2023-11-29 03:05:38,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:05:38,100 INFO L85 PathProgramCache]: Analyzing trace with hash -983864718, now seen corresponding path program 1 times [2023-11-29 03:05:38,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:05:38,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1125789653] [2023-11-29 03:05:38,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:05:38,101 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:05:38,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:05:38,103 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:05:38,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-11-29 03:05:38,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:05:38,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:05:38,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:05:38,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:05:38,372 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:05:38,372 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:05:38,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1125789653] [2023-11-29 03:05:38,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1125789653] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:05:38,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:05:38,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:05:38,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727773570] [2023-11-29 03:05:38,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:05:38,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:05:38,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:05:38,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:05:38,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:05:38,374 INFO L87 Difference]: Start difference. First operand 3041 states and 4380 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:40,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:05:40,705 INFO L93 Difference]: Finished difference Result 3029 states and 4356 transitions. [2023-11-29 03:05:40,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:05:40,707 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2023-11-29 03:05:40,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:05:40,711 INFO L225 Difference]: With dead ends: 3029 [2023-11-29 03:05:40,711 INFO L226 Difference]: Without dead ends: 3029 [2023-11-29 03:05:40,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:05:40,712 INFO L413 NwaCegarLoop]: 1638 mSDtfsCounter, 31 mSDsluCounter, 3248 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 4886 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:05:40,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 4886 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-29 03:05:40,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3029 states. [2023-11-29 03:05:40,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3029 to 3029. [2023-11-29 03:05:40,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3029 states, 2174 states have (on average 1.9806807727690892) internal successors, (4306), 3004 states have internal predecessors, (4306), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-29 03:05:40,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3029 states to 3029 states and 4356 transitions. [2023-11-29 03:05:40,757 INFO L78 Accepts]: Start accepts. Automaton has 3029 states and 4356 transitions. Word has length 40 [2023-11-29 03:05:40,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:05:40,758 INFO L495 AbstractCegarLoop]: Abstraction has 3029 states and 4356 transitions. [2023-11-29 03:05:40,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:40,758 INFO L276 IsEmpty]: Start isEmpty. Operand 3029 states and 4356 transitions. [2023-11-29 03:05:40,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-29 03:05:40,759 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:05:40,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:05:40,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2023-11-29 03:05:40,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:05:40,960 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr704REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2023-11-29 03:05:40,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:05:40,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1733985489, now seen corresponding path program 1 times [2023-11-29 03:05:40,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:05:40,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [164094166] [2023-11-29 03:05:40,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:05:40,961 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:05:40,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:05:40,962 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:05:40,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-11-29 03:05:41,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:05:41,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:05:41,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:05:41,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:05:41,412 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:05:41,413 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:05:41,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [164094166] [2023-11-29 03:05:41,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [164094166] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:05:41,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:05:41,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:05:41,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175993316] [2023-11-29 03:05:41,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:05:41,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:05:41,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:05:41,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:05:41,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:05:41,415 INFO L87 Difference]: Start difference. First operand 3029 states and 4356 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:43,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:05:43,932 INFO L93 Difference]: Finished difference Result 4504 states and 6211 transitions. [2023-11-29 03:05:43,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:05:43,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2023-11-29 03:05:43,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:05:43,938 INFO L225 Difference]: With dead ends: 4504 [2023-11-29 03:05:43,938 INFO L226 Difference]: Without dead ends: 4504 [2023-11-29 03:05:43,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:05:43,939 INFO L413 NwaCegarLoop]: 1702 mSDtfsCounter, 1260 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1269 SdHoareTripleChecker+Valid, 3206 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-29 03:05:43,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1269 Valid, 3206 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-29 03:05:43,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4504 states. [2023-11-29 03:05:43,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4504 to 3894. [2023-11-29 03:05:43,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3894 states, 3032 states have (on average 1.963060686015831) internal successors, (5952), 3859 states have internal predecessors, (5952), 35 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-29 03:05:44,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3894 states to 3894 states and 6022 transitions. [2023-11-29 03:05:44,005 INFO L78 Accepts]: Start accepts. Automaton has 3894 states and 6022 transitions. Word has length 44 [2023-11-29 03:05:44,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:05:44,006 INFO L495 AbstractCegarLoop]: Abstraction has 3894 states and 6022 transitions. [2023-11-29 03:05:44,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:44,006 INFO L276 IsEmpty]: Start isEmpty. Operand 3894 states and 6022 transitions. [2023-11-29 03:05:44,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-29 03:05:44,007 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:05:44,007 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:05:44,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-11-29 03:05:44,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:05:44,208 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr437REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2023-11-29 03:05:44,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:05:44,209 INFO L85 PathProgramCache]: Analyzing trace with hash 2076747285, now seen corresponding path program 1 times [2023-11-29 03:05:44,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:05:44,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1698930798] [2023-11-29 03:05:44,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:05:44,210 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 [2023-11-29 03:05:44,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:05:44,211 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:05:44,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-11-29 03:05:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:05:44,501 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:05:44,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:05:44,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:05:44,541 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:05:44,541 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:05:44,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1698930798] [2023-11-29 03:05:44,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1698930798] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:05:44,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:05:44,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:05:44,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328512004] [2023-11-29 03:05:44,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:05:44,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:05:44,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:05:44,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:05:44,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:05:44,543 INFO L87 Difference]: Start difference. First operand 3894 states and 6022 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:46,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:05:46,763 INFO L93 Difference]: Finished difference Result 3852 states and 5952 transitions. [2023-11-29 03:05:46,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:05:46,764 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-11-29 03:05:46,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:05:46,768 INFO L225 Difference]: With dead ends: 3852 [2023-11-29 03:05:46,768 INFO L226 Difference]: Without dead ends: 3852 [2023-11-29 03:05:46,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:05:46,768 INFO L413 NwaCegarLoop]: 1634 mSDtfsCounter, 33 mSDsluCounter, 3238 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 4872 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:05:46,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 4872 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-29 03:05:46,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3852 states. [2023-11-29 03:05:46,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3852 to 3852. [2023-11-29 03:05:46,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3852 states, 2990 states have (on average 1.9672240802675585) internal successors, (5882), 3817 states have internal predecessors, (5882), 35 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-29 03:05:46,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3852 states to 3852 states and 5952 transitions. [2023-11-29 03:05:46,810 INFO L78 Accepts]: Start accepts. Automaton has 3852 states and 5952 transitions. Word has length 49 [2023-11-29 03:05:46,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:05:46,810 INFO L495 AbstractCegarLoop]: Abstraction has 3852 states and 5952 transitions. [2023-11-29 03:05:46,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:46,811 INFO L276 IsEmpty]: Start isEmpty. Operand 3852 states and 5952 transitions. [2023-11-29 03:05:46,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-29 03:05:46,812 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:05:46,812 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:05:46,818 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2023-11-29 03:05:47,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:05:47,013 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2023-11-29 03:05:47,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:05:47,013 INFO L85 PathProgramCache]: Analyzing trace with hash -354629160, now seen corresponding path program 1 times [2023-11-29 03:05:47,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:05:47,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [248019872] [2023-11-29 03:05:47,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:05:47,014 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:05:47,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:05:47,016 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:05:47,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-11-29 03:05:47,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:05:47,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:05:47,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:05:47,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:05:47,420 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:05:47,420 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:05:47,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [248019872] [2023-11-29 03:05:47,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [248019872] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:05:47,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:05:47,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:05:47,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509016081] [2023-11-29 03:05:47,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:05:47,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:05:47,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:05:47,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:05:47,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:05:47,422 INFO L87 Difference]: Start difference. First operand 3852 states and 5952 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:49,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:05:49,612 INFO L93 Difference]: Finished difference Result 3834 states and 5922 transitions. [2023-11-29 03:05:49,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:05:49,613 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-11-29 03:05:49,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:05:49,617 INFO L225 Difference]: With dead ends: 3834 [2023-11-29 03:05:49,617 INFO L226 Difference]: Without dead ends: 3834 [2023-11-29 03:05:49,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:05:49,618 INFO L413 NwaCegarLoop]: 1630 mSDtfsCounter, 23 mSDsluCounter, 3240 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 4870 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:05:49,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 4870 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-29 03:05:49,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3834 states. [2023-11-29 03:05:49,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3834 to 3834. [2023-11-29 03:05:49,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3834 states, 2972 states have (on average 1.9690444145356663) internal successors, (5852), 3799 states have internal predecessors, (5852), 35 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-29 03:05:49,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3834 states to 3834 states and 5922 transitions. [2023-11-29 03:05:49,661 INFO L78 Accepts]: Start accepts. Automaton has 3834 states and 5922 transitions. Word has length 52 [2023-11-29 03:05:49,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:05:49,661 INFO L495 AbstractCegarLoop]: Abstraction has 3834 states and 5922 transitions. [2023-11-29 03:05:49,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:49,661 INFO L276 IsEmpty]: Start isEmpty. Operand 3834 states and 5922 transitions. [2023-11-29 03:05:49,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-29 03:05:49,662 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:05:49,662 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:05:49,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-11-29 03:05:49,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:05:49,863 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2023-11-29 03:05:49,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:05:49,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1287350982, now seen corresponding path program 1 times [2023-11-29 03:05:49,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:05:49,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1401097248] [2023-11-29 03:05:49,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:05:49,864 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:05:49,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:05:49,865 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:05:49,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-11-29 03:05:50,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:05:50,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 03:05:50,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:05:50,210 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 03:05:50,210 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 03:05:50,211 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 03:05:50,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2023-11-29 03:05:50,259 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:05:50,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2023-11-29 03:05:50,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:05:50,276 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:05:50,276 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:05:50,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1401097248] [2023-11-29 03:05:50,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1401097248] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:05:50,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:05:50,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:05:50,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114295372] [2023-11-29 03:05:50,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:05:50,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:05:50,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:05:50,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:05:50,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:05:50,278 INFO L87 Difference]: Start difference. First operand 3834 states and 5922 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:53,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:05:53,799 INFO L93 Difference]: Finished difference Result 5123 states and 7782 transitions. [2023-11-29 03:05:53,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:05:53,800 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-11-29 03:05:53,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:05:53,808 INFO L225 Difference]: With dead ends: 5123 [2023-11-29 03:05:53,808 INFO L226 Difference]: Without dead ends: 5123 [2023-11-29 03:05:53,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:05:53,810 INFO L413 NwaCegarLoop]: 1819 mSDtfsCounter, 850 mSDsluCounter, 3400 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 5219 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:05:53,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 5219 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-29 03:05:53,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5123 states. [2023-11-29 03:05:53,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5123 to 3803. [2023-11-29 03:05:53,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3803 states, 2941 states have (on average 1.9789187351241075) internal successors, (5820), 3768 states have internal predecessors, (5820), 35 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-29 03:05:53,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3803 states to 3803 states and 5890 transitions. [2023-11-29 03:05:53,884 INFO L78 Accepts]: Start accepts. Automaton has 3803 states and 5890 transitions. Word has length 55 [2023-11-29 03:05:53,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:05:53,884 INFO L495 AbstractCegarLoop]: Abstraction has 3803 states and 5890 transitions. [2023-11-29 03:05:53,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:53,885 INFO L276 IsEmpty]: Start isEmpty. Operand 3803 states and 5890 transitions. [2023-11-29 03:05:53,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-29 03:05:53,886 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:05:53,886 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:05:53,890 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2023-11-29 03:05:54,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:05:54,086 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr437REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2023-11-29 03:05:54,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:05:54,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1564625545, now seen corresponding path program 1 times [2023-11-29 03:05:54,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:05:54,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1022710439] [2023-11-29 03:05:54,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:05:54,088 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:05:54,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:05:54,089 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:05:54,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-11-29 03:05:54,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:05:54,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:05:54,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:05:54,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:05:54,720 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:05:54,720 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:05:54,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1022710439] [2023-11-29 03:05:54,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1022710439] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:05:54,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:05:54,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:05:54,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802225305] [2023-11-29 03:05:54,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:05:54,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:05:54,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:05:54,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:05:54,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:05:54,722 INFO L87 Difference]: Start difference. First operand 3803 states and 5890 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:57,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:05:57,012 INFO L93 Difference]: Finished difference Result 5259 states and 7811 transitions. [2023-11-29 03:05:57,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:05:57,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-11-29 03:05:57,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:05:57,018 INFO L225 Difference]: With dead ends: 5259 [2023-11-29 03:05:57,018 INFO L226 Difference]: Without dead ends: 5259 [2023-11-29 03:05:57,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:05:57,019 INFO L413 NwaCegarLoop]: 2041 mSDtfsCounter, 984 mSDsluCounter, 1531 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 SdHoareTripleChecker+Valid, 3572 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:05:57,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [992 Valid, 3572 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-29 03:05:57,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5259 states. [2023-11-29 03:05:57,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5259 to 4720. [2023-11-29 03:05:57,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4720 states, 3850 states have (on average 1.9477922077922079) internal successors, (7499), 4674 states have internal predecessors, (7499), 46 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-29 03:05:57,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4720 states to 4720 states and 7591 transitions. [2023-11-29 03:05:57,071 INFO L78 Accepts]: Start accepts. Automaton has 4720 states and 7591 transitions. Word has length 53 [2023-11-29 03:05:57,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:05:57,071 INFO L495 AbstractCegarLoop]: Abstraction has 4720 states and 7591 transitions. [2023-11-29 03:05:57,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:57,072 INFO L276 IsEmpty]: Start isEmpty. Operand 4720 states and 7591 transitions. [2023-11-29 03:05:57,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-29 03:05:57,072 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:05:57,073 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:05:57,078 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2023-11-29 03:05:57,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:05:57,273 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr391REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2023-11-29 03:05:57,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:05:57,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1413928868, now seen corresponding path program 1 times [2023-11-29 03:05:57,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:05:57,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [346914898] [2023-11-29 03:05:57,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:05:57,274 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:05:57,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:05:57,275 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:05:57,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-11-29 03:05:57,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:05:57,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 03:05:57,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:05:57,659 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 03:05:57,660 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 03:05:57,660 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 03:05:57,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2023-11-29 03:05:57,898 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:05:57,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2023-11-29 03:05:57,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:05:57,914 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:05:57,915 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:05:57,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [346914898] [2023-11-29 03:05:57,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [346914898] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:05:57,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:05:57,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:05:57,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624620041] [2023-11-29 03:05:57,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:05:57,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:05:57,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:05:57,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:05:57,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:05:57,917 INFO L87 Difference]: Start difference. First operand 4720 states and 7591 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:01,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:06:01,574 INFO L93 Difference]: Finished difference Result 5070 states and 7691 transitions. [2023-11-29 03:06:01,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:06:01,576 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-11-29 03:06:01,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:06:01,581 INFO L225 Difference]: With dead ends: 5070 [2023-11-29 03:06:01,581 INFO L226 Difference]: Without dead ends: 5070 [2023-11-29 03:06:01,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:06:01,582 INFO L413 NwaCegarLoop]: 1637 mSDtfsCounter, 803 mSDsluCounter, 3218 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 4855 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:06:01,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [809 Valid, 4855 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-29 03:06:01,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5070 states. [2023-11-29 03:06:01,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5070 to 4352. [2023-11-29 03:06:01,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4352 states, 3482 states have (on average 1.9721424468696152) internal successors, (6867), 4309 states have internal predecessors, (6867), 43 states have call successors, (43), 3 states have call predecessors, (43), 3 states have return successors, (43), 40 states have call predecessors, (43), 43 states have call successors, (43) [2023-11-29 03:06:01,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4352 states to 4352 states and 6953 transitions. [2023-11-29 03:06:01,628 INFO L78 Accepts]: Start accepts. Automaton has 4352 states and 6953 transitions. Word has length 56 [2023-11-29 03:06:01,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:06:01,629 INFO L495 AbstractCegarLoop]: Abstraction has 4352 states and 6953 transitions. [2023-11-29 03:06:01,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:01,629 INFO L276 IsEmpty]: Start isEmpty. Operand 4352 states and 6953 transitions. [2023-11-29 03:06:01,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-29 03:06:01,629 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:06:01,629 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:06:01,644 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2023-11-29 03:06:01,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:06:01,838 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2023-11-29 03:06:01,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:06:01,839 INFO L85 PathProgramCache]: Analyzing trace with hash -411165865, now seen corresponding path program 1 times [2023-11-29 03:06:01,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:06:01,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2004036478] [2023-11-29 03:06:01,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:06:01,840 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:06:01,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:06:01,841 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:06:01,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-11-29 03:06:02,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:06:02,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 03:06:02,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:06:02,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 03:06:02,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 03:06:02,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:02,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-29 03:06:02,809 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 03:06:02,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-29 03:06:02,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:06:02,826 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:06:02,826 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:06:02,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2004036478] [2023-11-29 03:06:02,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2004036478] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:06:02,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:06:02,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:06:02,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436779741] [2023-11-29 03:06:02,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:06:02,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:06:02,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:06:02,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:06:02,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:06:02,828 INFO L87 Difference]: Start difference. First operand 4352 states and 6953 transitions. Second operand has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:09,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:06:09,634 INFO L93 Difference]: Finished difference Result 6414 states and 10352 transitions. [2023-11-29 03:06:09,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:06:09,634 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-11-29 03:06:09,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:06:09,640 INFO L225 Difference]: With dead ends: 6414 [2023-11-29 03:06:09,640 INFO L226 Difference]: Without dead ends: 6414 [2023-11-29 03:06:09,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:06:09,641 INFO L413 NwaCegarLoop]: 655 mSDtfsCounter, 2215 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 1860 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2229 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 1955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:06:09,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2229 Valid, 1149 Invalid, 1955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1860 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-11-29 03:06:09,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6414 states. [2023-11-29 03:06:09,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6414 to 4170. [2023-11-29 03:06:09,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4170 states, 3384 states have (on average 1.8959810874704492) internal successors, (6416), 4127 states have internal predecessors, (6416), 43 states have call successors, (43), 3 states have call predecessors, (43), 3 states have return successors, (43), 40 states have call predecessors, (43), 43 states have call successors, (43) [2023-11-29 03:06:09,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4170 states to 4170 states and 6502 transitions. [2023-11-29 03:06:09,712 INFO L78 Accepts]: Start accepts. Automaton has 4170 states and 6502 transitions. Word has length 56 [2023-11-29 03:06:09,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:06:09,713 INFO L495 AbstractCegarLoop]: Abstraction has 4170 states and 6502 transitions. [2023-11-29 03:06:09,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:09,713 INFO L276 IsEmpty]: Start isEmpty. Operand 4170 states and 6502 transitions. [2023-11-29 03:06:09,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-29 03:06:09,714 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:06:09,714 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:06:09,724 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2023-11-29 03:06:09,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:06:09,915 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2023-11-29 03:06:09,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:06:09,915 INFO L85 PathProgramCache]: Analyzing trace with hash 998998998, now seen corresponding path program 1 times [2023-11-29 03:06:09,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:06:09,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [504458083] [2023-11-29 03:06:09,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:06:09,916 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:06:09,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:06:09,917 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:06:09,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-11-29 03:06:10,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:06:10,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:06:10,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:06:10,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 03:06:10,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 03:06:10,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 03:06:10,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:06:10,316 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:06:10,316 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:06:10,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [504458083] [2023-11-29 03:06:10,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [504458083] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:06:10,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:06:10,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:06:10,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475465163] [2023-11-29 03:06:10,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:06:10,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:06:10,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:06:10,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:06:10,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:06:10,319 INFO L87 Difference]: Start difference. First operand 4170 states and 6502 transitions. Second operand has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:16,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:06:16,283 INFO L93 Difference]: Finished difference Result 4169 states and 6499 transitions. [2023-11-29 03:06:16,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:06:16,284 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-11-29 03:06:16,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:06:16,288 INFO L225 Difference]: With dead ends: 4169 [2023-11-29 03:06:16,288 INFO L226 Difference]: Without dead ends: 4169 [2023-11-29 03:06:16,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:06:16,289 INFO L413 NwaCegarLoop]: 1558 mSDtfsCounter, 3 mSDsluCounter, 2675 mSDsCounter, 0 mSdLazyCounter, 2778 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 4233 SdHoareTripleChecker+Invalid, 2779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-11-29 03:06:16,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 4233 Invalid, 2779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2778 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-11-29 03:06:16,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4169 states. [2023-11-29 03:06:16,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4169 to 4169. [2023-11-29 03:06:16,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4169 states, 3384 states have (on average 1.8950945626477542) internal successors, (6413), 4126 states have internal predecessors, (6413), 43 states have call successors, (43), 3 states have call predecessors, (43), 3 states have return successors, (43), 40 states have call predecessors, (43), 43 states have call successors, (43) [2023-11-29 03:06:16,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4169 states to 4169 states and 6499 transitions. [2023-11-29 03:06:16,339 INFO L78 Accepts]: Start accepts. Automaton has 4169 states and 6499 transitions. Word has length 60 [2023-11-29 03:06:16,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:06:16,340 INFO L495 AbstractCegarLoop]: Abstraction has 4169 states and 6499 transitions. [2023-11-29 03:06:16,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:16,340 INFO L276 IsEmpty]: Start isEmpty. Operand 4169 states and 6499 transitions. [2023-11-29 03:06:16,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-29 03:06:16,341 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:06:16,341 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:06:16,346 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2023-11-29 03:06:16,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:06:16,541 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2023-11-29 03:06:16,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:06:16,542 INFO L85 PathProgramCache]: Analyzing trace with hash 998998999, now seen corresponding path program 1 times [2023-11-29 03:06:16,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:06:16,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [335540282] [2023-11-29 03:06:16,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:06:16,543 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:06:16,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:06:16,544 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:06:16,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-11-29 03:06:16,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:06:16,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 03:06:16,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:06:16,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 03:06:16,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 03:06:16,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 03:06:16,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-11-29 03:06:16,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:06:16,975 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:06:16,975 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:06:16,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [335540282] [2023-11-29 03:06:16,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [335540282] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:06:16,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:06:16,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:06:16,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294866264] [2023-11-29 03:06:16,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:06:16,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:06:16,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:06:16,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:06:16,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:06:16,977 INFO L87 Difference]: Start difference. First operand 4169 states and 6499 transitions. Second operand has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:25,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:06:25,221 INFO L93 Difference]: Finished difference Result 4168 states and 6496 transitions. [2023-11-29 03:06:25,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:06:25,222 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-11-29 03:06:25,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:06:25,225 INFO L225 Difference]: With dead ends: 4168 [2023-11-29 03:06:25,226 INFO L226 Difference]: Without dead ends: 4168 [2023-11-29 03:06:25,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:06:25,226 INFO L413 NwaCegarLoop]: 1558 mSDtfsCounter, 1 mSDsluCounter, 2662 mSDsCounter, 0 mSdLazyCounter, 2789 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4220 SdHoareTripleChecker+Invalid, 2790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:06:25,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4220 Invalid, 2790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2789 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2023-11-29 03:06:25,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4168 states. [2023-11-29 03:06:25,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4168 to 4168. [2023-11-29 03:06:25,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4168 states, 3381 states have (on average 1.8958887902987283) internal successors, (6410), 4125 states have internal predecessors, (6410), 43 states have call successors, (43), 3 states have call predecessors, (43), 3 states have return successors, (43), 40 states have call predecessors, (43), 43 states have call successors, (43) [2023-11-29 03:06:25,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4168 states to 4168 states and 6496 transitions. [2023-11-29 03:06:25,261 INFO L78 Accepts]: Start accepts. Automaton has 4168 states and 6496 transitions. Word has length 60 [2023-11-29 03:06:25,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:06:25,261 INFO L495 AbstractCegarLoop]: Abstraction has 4168 states and 6496 transitions. [2023-11-29 03:06:25,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:25,262 INFO L276 IsEmpty]: Start isEmpty. Operand 4168 states and 6496 transitions. [2023-11-29 03:06:25,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-29 03:06:25,262 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:06:25,262 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:06:25,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2023-11-29 03:06:25,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:06:25,463 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2023-11-29 03:06:25,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:06:25,463 INFO L85 PathProgramCache]: Analyzing trace with hash 367118170, now seen corresponding path program 1 times [2023-11-29 03:06:25,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:06:25,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [237959216] [2023-11-29 03:06:25,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:06:25,464 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:06:25,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:06:25,466 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:06:25,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-11-29 03:06:25,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:06:25,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:06:25,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:06:25,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:06:25,856 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:06:25,856 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:06:25,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [237959216] [2023-11-29 03:06:25,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [237959216] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:06:25,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:06:25,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:06:25,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21105635] [2023-11-29 03:06:25,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:06:25,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:06:25,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:06:25,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:06:25,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:06:25,858 INFO L87 Difference]: Start difference. First operand 4168 states and 6496 transitions. Second operand has 4 states, 3 states have (on average 21.333333333333332) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 03:06:27,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:06:27,852 INFO L93 Difference]: Finished difference Result 4170 states and 6503 transitions. [2023-11-29 03:06:27,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:06:27,853 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 21.333333333333332) internal successors, (64), 4 states have internal predecessors, (64), 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 66 [2023-11-29 03:06:27,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:06:27,864 INFO L225 Difference]: With dead ends: 4170 [2023-11-29 03:06:27,864 INFO L226 Difference]: Without dead ends: 4170 [2023-11-29 03:06:27,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:06:27,865 INFO L413 NwaCegarLoop]: 1557 mSDtfsCounter, 1 mSDsluCounter, 3108 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4665 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 03:06:27,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4665 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-29 03:06:27,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4170 states. [2023-11-29 03:06:27,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4170 to 4170. [2023-11-29 03:06:27,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4170 states, 3382 states have (on average 1.89591957421644) internal successors, (6412), 4127 states have internal predecessors, (6412), 43 states have call successors, (43), 3 states have call predecessors, (43), 4 states have return successors, (48), 40 states have call predecessors, (48), 43 states have call successors, (48) [2023-11-29 03:06:27,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4170 states to 4170 states and 6503 transitions. [2023-11-29 03:06:27,919 INFO L78 Accepts]: Start accepts. Automaton has 4170 states and 6503 transitions. Word has length 66 [2023-11-29 03:06:27,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:06:27,919 INFO L495 AbstractCegarLoop]: Abstraction has 4170 states and 6503 transitions. [2023-11-29 03:06:27,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 21.333333333333332) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 03:06:27,919 INFO L276 IsEmpty]: Start isEmpty. Operand 4170 states and 6503 transitions. [2023-11-29 03:06:27,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-29 03:06:27,920 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:06:27,920 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:06:27,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-11-29 03:06:28,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:06:28,120 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2023-11-29 03:06:28,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:06:28,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1208707161, now seen corresponding path program 1 times [2023-11-29 03:06:28,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:06:28,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [279952071] [2023-11-29 03:06:28,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:06:28,122 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:06:28,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:06:28,123 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:06:28,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-11-29 03:06:28,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:06:28,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 03:06:28,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:06:28,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:06:28,520 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:06:28,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:06:28,595 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:06:28,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [279952071] [2023-11-29 03:06:28,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [279952071] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:06:28,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:06:28,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-29 03:06:28,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486856027] [2023-11-29 03:06:28,596 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:06:28,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 03:06:28,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:06:28,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 03:06:28,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:06:28,598 INFO L87 Difference]: Start difference. First operand 4170 states and 6503 transitions. Second operand has 8 states, 6 states have (on average 11.333333333333334) internal successors, (68), 8 states have internal predecessors, (68), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 03:06:31,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:06:31,821 INFO L93 Difference]: Finished difference Result 4179 states and 6521 transitions. [2023-11-29 03:06:31,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 03:06:31,822 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 11.333333333333334) internal successors, (68), 8 states have internal predecessors, (68), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 67 [2023-11-29 03:06:31,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:06:31,830 INFO L225 Difference]: With dead ends: 4179 [2023-11-29 03:06:31,830 INFO L226 Difference]: Without dead ends: 4179 [2023-11-29 03:06:31,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2023-11-29 03:06:31,831 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 6 mSDsluCounter, 6206 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 7761 SdHoareTripleChecker+Invalid, 1045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:06:31,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 7761 Invalid, 1045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1035 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-29 03:06:31,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4179 states. [2023-11-29 03:06:31,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4179 to 4178. [2023-11-29 03:06:31,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4178 states, 3389 states have (on average 1.8958394806727648) internal successors, (6425), 4134 states have internal predecessors, (6425), 43 states have call successors, (43), 4 states have call predecessors, (43), 5 states have return successors, (48), 40 states have call predecessors, (48), 43 states have call successors, (48) [2023-11-29 03:06:31,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4178 states to 4178 states and 6516 transitions. [2023-11-29 03:06:31,894 INFO L78 Accepts]: Start accepts. Automaton has 4178 states and 6516 transitions. Word has length 67 [2023-11-29 03:06:31,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:06:31,895 INFO L495 AbstractCegarLoop]: Abstraction has 4178 states and 6516 transitions. [2023-11-29 03:06:31,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 11.333333333333334) internal successors, (68), 8 states have internal predecessors, (68), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 03:06:31,895 INFO L276 IsEmpty]: Start isEmpty. Operand 4178 states and 6516 transitions. [2023-11-29 03:06:31,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-29 03:06:31,896 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:06:31,896 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:06:31,904 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Ended with exit code 0 [2023-11-29 03:06:32,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:06:32,097 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2023-11-29 03:06:32,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:06:32,097 INFO L85 PathProgramCache]: Analyzing trace with hash 599887642, now seen corresponding path program 2 times [2023-11-29 03:06:32,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:06:32,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1630283107] [2023-11-29 03:06:32,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:06:32,098 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:06:32,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:06:32,099 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:06:32,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-11-29 03:06:32,748 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:06:32,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:06:32,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 03:06:32,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:06:32,842 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:06:32,843 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:06:33,108 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:06:33,109 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:06:33,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1630283107] [2023-11-29 03:06:33,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1630283107] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:06:33,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:06:33,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-29 03:06:33,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843607908] [2023-11-29 03:06:33,109 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:06:33,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 03:06:33,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:06:33,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 03:06:33,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-11-29 03:06:33,111 INFO L87 Difference]: Start difference. First operand 4178 states and 6516 transitions. Second operand has 14 states, 12 states have (on average 6.166666666666667) internal successors, (74), 14 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 03:06:38,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:06:38,671 INFO L93 Difference]: Finished difference Result 4193 states and 6561 transitions. [2023-11-29 03:06:38,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 03:06:38,672 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 6.166666666666667) internal successors, (74), 14 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 70 [2023-11-29 03:06:38,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:06:38,679 INFO L225 Difference]: With dead ends: 4193 [2023-11-29 03:06:38,679 INFO L226 Difference]: Without dead ends: 4190 [2023-11-29 03:06:38,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=217, Invalid=383, Unknown=0, NotChecked=0, Total=600 [2023-11-29 03:06:38,680 INFO L413 NwaCegarLoop]: 1553 mSDtfsCounter, 13 mSDsluCounter, 10849 mSDsCounter, 0 mSdLazyCounter, 1818 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 12402 SdHoareTripleChecker+Invalid, 1853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:06:38,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 12402 Invalid, 1853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1818 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-11-29 03:06:38,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4190 states. [2023-11-29 03:06:38,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4190 to 4187. [2023-11-29 03:06:38,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4187 states, 3398 states have (on average 1.894055326662743) internal successors, (6436), 4143 states have internal predecessors, (6436), 43 states have call successors, (43), 4 states have call predecessors, (43), 5 states have return successors, (48), 40 states have call predecessors, (48), 43 states have call successors, (48) [2023-11-29 03:06:38,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4187 states to 4187 states and 6527 transitions. [2023-11-29 03:06:38,758 INFO L78 Accepts]: Start accepts. Automaton has 4187 states and 6527 transitions. Word has length 70 [2023-11-29 03:06:38,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:06:38,759 INFO L495 AbstractCegarLoop]: Abstraction has 4187 states and 6527 transitions. [2023-11-29 03:06:38,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 6.166666666666667) internal successors, (74), 14 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 03:06:38,759 INFO L276 IsEmpty]: Start isEmpty. Operand 4187 states and 6527 transitions. [2023-11-29 03:06:38,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-29 03:06:38,760 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:06:38,760 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:06:38,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Ended with exit code 0 [2023-11-29 03:06:38,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:06:38,961 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2023-11-29 03:06:38,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:06:38,961 INFO L85 PathProgramCache]: Analyzing trace with hash -8538438, now seen corresponding path program 3 times [2023-11-29 03:06:38,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:06:38,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [224681430] [2023-11-29 03:06:38,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 03:06:38,962 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:06:38,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:06:38,963 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:06:38,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-11-29 03:06:39,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-29 03:06:39,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:06:39,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 03:06:39,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:06:40,049 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:06:40,050 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:06:40,865 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:06:40,865 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:06:40,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [224681430] [2023-11-29 03:06:40,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [224681430] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:06:40,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:06:40,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-11-29 03:06:40,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684467111] [2023-11-29 03:06:40,866 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:06:40,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 03:06:40,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:06:40,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 03:06:40,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2023-11-29 03:06:40,868 INFO L87 Difference]: Start difference. First operand 4187 states and 6527 transitions. Second operand has 26 states, 24 states have (on average 3.5833333333333335) internal successors, (86), 26 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 03:06:51,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:06:51,887 INFO L93 Difference]: Finished difference Result 4216 states and 6645 transitions. [2023-11-29 03:06:51,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-29 03:06:51,888 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 3.5833333333333335) internal successors, (86), 26 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 76 [2023-11-29 03:06:51,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:06:51,897 INFO L225 Difference]: With dead ends: 4216 [2023-11-29 03:06:51,897 INFO L226 Difference]: Without dead ends: 4213 [2023-11-29 03:06:51,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=793, Invalid=1559, Unknown=0, NotChecked=0, Total=2352 [2023-11-29 03:06:51,899 INFO L413 NwaCegarLoop]: 1553 mSDtfsCounter, 24 mSDsluCounter, 18604 mSDsCounter, 0 mSdLazyCounter, 3462 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 20157 SdHoareTripleChecker+Invalid, 3515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 3462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:06:51,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 20157 Invalid, 3515 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [53 Valid, 3462 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2023-11-29 03:06:51,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4213 states. [2023-11-29 03:06:51,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4213 to 4205. [2023-11-29 03:06:51,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4205 states, 3416 states have (on average 1.890807962529274) internal successors, (6459), 4161 states have internal predecessors, (6459), 43 states have call successors, (43), 4 states have call predecessors, (43), 5 states have return successors, (48), 40 states have call predecessors, (48), 43 states have call successors, (48) [2023-11-29 03:06:51,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4205 states to 4205 states and 6550 transitions. [2023-11-29 03:06:51,968 INFO L78 Accepts]: Start accepts. Automaton has 4205 states and 6550 transitions. Word has length 76 [2023-11-29 03:06:51,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:06:51,969 INFO L495 AbstractCegarLoop]: Abstraction has 4205 states and 6550 transitions. [2023-11-29 03:06:51,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 3.5833333333333335) internal successors, (86), 26 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 03:06:51,969 INFO L276 IsEmpty]: Start isEmpty. Operand 4205 states and 6550 transitions. [2023-11-29 03:06:51,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-29 03:06:51,970 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:06:51,970 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:06:51,979 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Ended with exit code 0 [2023-11-29 03:06:52,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:06:52,173 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2023-11-29 03:06:52,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:06:52,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1791188474, now seen corresponding path program 4 times [2023-11-29 03:06:52,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:06:52,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [453485558] [2023-11-29 03:06:52,175 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 03:06:52,175 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:06:52,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:06:52,176 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:06:52,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-11-29 03:06:52,707 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 03:06:52,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:06:52,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 03:06:52,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:06:53,163 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:06:53,163 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:06:54,858 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:06:54,858 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:06:54,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [453485558] [2023-11-29 03:06:54,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [453485558] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:06:54,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:06:54,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2023-11-29 03:06:54,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80882474] [2023-11-29 03:06:54,859 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:06:54,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-29 03:06:54,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:06:54,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-29 03:06:54,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=672, Invalid=1778, Unknown=0, NotChecked=0, Total=2450 [2023-11-29 03:06:54,862 INFO L87 Difference]: Start difference. First operand 4205 states and 6550 transitions. Second operand has 50 states, 48 states have (on average 2.2916666666666665) internal successors, (110), 50 states have internal predecessors, (110), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 03:07:18,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:07:18,108 INFO L93 Difference]: Finished difference Result 4261 states and 6718 transitions. [2023-11-29 03:07:18,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2023-11-29 03:07:18,109 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 48 states have (on average 2.2916666666666665) internal successors, (110), 50 states have internal predecessors, (110), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 88 [2023-11-29 03:07:18,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:07:18,118 INFO L225 Difference]: With dead ends: 4261 [2023-11-29 03:07:18,118 INFO L226 Difference]: Without dead ends: 4259 [2023-11-29 03:07:18,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1340 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=3742, Invalid=9140, Unknown=0, NotChecked=0, Total=12882 [2023-11-29 03:07:18,123 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 46 mSDsluCounter, 35719 mSDsCounter, 0 mSdLazyCounter, 7483 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 37274 SdHoareTripleChecker+Invalid, 7571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 7483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:07:18,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 37274 Invalid, 7571 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [88 Valid, 7483 Invalid, 0 Unknown, 0 Unchecked, 17.3s Time] [2023-11-29 03:07:18,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4259 states. [2023-11-29 03:07:18,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4259 to 4239. [2023-11-29 03:07:18,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4239 states, 3450 states have (on average 1.8855072463768117) internal successors, (6505), 4195 states have internal predecessors, (6505), 43 states have call successors, (43), 4 states have call predecessors, (43), 5 states have return successors, (48), 40 states have call predecessors, (48), 43 states have call successors, (48) [2023-11-29 03:07:18,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4239 states to 4239 states and 6596 transitions. [2023-11-29 03:07:18,175 INFO L78 Accepts]: Start accepts. Automaton has 4239 states and 6596 transitions. Word has length 88 [2023-11-29 03:07:18,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:07:18,175 INFO L495 AbstractCegarLoop]: Abstraction has 4239 states and 6596 transitions. [2023-11-29 03:07:18,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 48 states have (on average 2.2916666666666665) internal successors, (110), 50 states have internal predecessors, (110), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 03:07:18,176 INFO L276 IsEmpty]: Start isEmpty. Operand 4239 states and 6596 transitions. [2023-11-29 03:07:18,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-29 03:07:18,176 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:07:18,177 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:07:18,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2023-11-29 03:07:18,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:07:18,377 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2023-11-29 03:07:18,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:07:18,378 INFO L85 PathProgramCache]: Analyzing trace with hash -542098278, now seen corresponding path program 5 times [2023-11-29 03:07:18,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:07:18,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1245981499] [2023-11-29 03:07:18,379 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 03:07:18,379 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 [2023-11-29 03:07:18,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:07:18,380 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:07:18,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-11-29 03:07:19,985 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2023-11-29 03:07:19,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:07:20,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 58 conjunts are in the unsatisfiable core [2023-11-29 03:07:20,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:07:20,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 03:07:20,123 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 03:07:20,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-29 03:07:20,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 03:07:20,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-11-29 03:07:21,214 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 03:07:21,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 03:07:21,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2023-11-29 03:07:21,299 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 03:07:21,299 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:07:21,733 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2586 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_2586) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)))) is different from false [2023-11-29 03:07:21,736 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:07:21,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1245981499] [2023-11-29 03:07:21,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1245981499] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:07:21,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1061399653] [2023-11-29 03:07:21,736 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 03:07:21,736 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 03:07:21,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 03:07:21,737 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 03:07:21,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2023-11-29 03:08:25,667 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2023-11-29 03:08:25,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:08:25,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 61 conjunts are in the unsatisfiable core [2023-11-29 03:08:25,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:08:25,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 03:08:26,167 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 03:08:26,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-29 03:08:26,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 03:08:26,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-11-29 03:08:27,216 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 03:08:27,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-11-29 03:08:27,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-11-29 03:08:27,298 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 03:08:27,298 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:08:31,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1061399653] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:08:31,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:08:31,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2023-11-29 03:08:31,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992883427] [2023-11-29 03:08:31,710 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:08:31,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 03:08:31,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:08:31,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 03:08:31,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=186, Unknown=3, NotChecked=28, Total=272 [2023-11-29 03:08:31,711 INFO L87 Difference]: Start difference. First operand 4239 states and 6596 transitions. Second operand has 13 states, 10 states have (on average 12.4) internal successors, (124), 13 states have internal predecessors, (124), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 03:08:49,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:08:49,276 INFO L93 Difference]: Finished difference Result 8774 states and 14058 transitions. [2023-11-29 03:08:49,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 03:08:49,277 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 12.4) internal successors, (124), 13 states have internal predecessors, (124), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 110 [2023-11-29 03:08:49,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:08:49,292 INFO L225 Difference]: With dead ends: 8774 [2023-11-29 03:08:49,292 INFO L226 Difference]: Without dead ends: 8772 [2023-11-29 03:08:49,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 208 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=64, Invalid=209, Unknown=3, NotChecked=30, Total=306 [2023-11-29 03:08:49,293 INFO L413 NwaCegarLoop]: 995 mSDtfsCounter, 3775 mSDsluCounter, 6249 mSDsCounter, 0 mSdLazyCounter, 6972 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3791 SdHoareTripleChecker+Valid, 7244 SdHoareTripleChecker+Invalid, 7004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 6972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:08:49,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3791 Valid, 7244 Invalid, 7004 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [32 Valid, 6972 Invalid, 0 Unknown, 0 Unchecked, 17.3s Time] [2023-11-29 03:08:49,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8772 states. [2023-11-29 03:08:49,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8772 to 4285. [2023-11-29 03:08:49,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4285 states, 3496 states have (on average 1.8732837528604118) internal successors, (6549), 4240 states have internal predecessors, (6549), 43 states have call successors, (43), 5 states have call predecessors, (43), 6 states have return successors, (48), 40 states have call predecessors, (48), 43 states have call successors, (48) [2023-11-29 03:08:49,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4285 states to 4285 states and 6640 transitions. [2023-11-29 03:08:49,367 INFO L78 Accepts]: Start accepts. Automaton has 4285 states and 6640 transitions. Word has length 110 [2023-11-29 03:08:49,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:08:49,368 INFO L495 AbstractCegarLoop]: Abstraction has 4285 states and 6640 transitions. [2023-11-29 03:08:49,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 12.4) internal successors, (124), 13 states have internal predecessors, (124), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 03:08:49,368 INFO L276 IsEmpty]: Start isEmpty. Operand 4285 states and 6640 transitions. [2023-11-29 03:08:49,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-29 03:08:49,369 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:08:49,369 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:08:49,380 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Ended with exit code 0 [2023-11-29 03:08:49,609 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (35)] Ended with exit code 0 [2023-11-29 03:08:49,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-29 03:08:49,769 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2023-11-29 03:08:49,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:08:49,770 INFO L85 PathProgramCache]: Analyzing trace with hash -542098277, now seen corresponding path program 1 times [2023-11-29 03:08:49,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:08:49,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [137912327] [2023-11-29 03:08:49,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:08:49,771 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:08:49,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:08:49,772 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:08:49,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2023-11-29 03:08:50,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:08:50,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 107 conjunts are in the unsatisfiable core [2023-11-29 03:08:50,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:08:50,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 03:08:50,706 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 03:08:50,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-29 03:08:50,712 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 [2023-11-29 03:08:50,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 03:08:50,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 03:08:50,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-11-29 03:08:50,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-11-29 03:08:51,673 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 03:08:51,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-11-29 03:08:51,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-11-29 03:08:51,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2023-11-29 03:08:51,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-11-29 03:08:51,796 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 03:08:51,796 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:08:53,312 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3600 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3601 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_3600) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_3601) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_3600 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_3600) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd .cse1 (_ bv16 32)) (bvadd .cse1 (_ bv20 32))))))) is different from false [2023-11-29 03:08:53,319 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:08:53,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [137912327] [2023-11-29 03:08:53,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [137912327] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:08:53,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1828292698] [2023-11-29 03:08:53,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:08:53,319 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 03:08:53,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 03:08:53,320 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 03:08:53,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2023-11-29 03:10:34,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:10:34,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 109 conjunts are in the unsatisfiable core [2023-11-29 03:10:34,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:10:34,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 03:10:34,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 03:10:34,899 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 03:10:34,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-29 03:10:34,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 03:10:34,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 03:10:35,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-11-29 03:10:35,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-29 03:10:36,061 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 03:10:36,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-29 03:10:36,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-11-29 03:10:36,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 03:10:36,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-29 03:10:36,188 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 03:10:36,188 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:10:37,549 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4153 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_4153) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd (_ bv20 32) .cse0)))) (forall ((v_ArrVal_4153 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4154 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_4153) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_4154) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-11-29 03:10:37,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1828292698] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:10:37,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:10:37,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2023-11-29 03:10:37,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117403467] [2023-11-29 03:10:37,554 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:10:37,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 03:10:37,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:10:37,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 03:10:37,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=172, Unknown=2, NotChecked=54, Total=272 [2023-11-29 03:10:37,556 INFO L87 Difference]: Start difference. First operand 4285 states and 6640 transitions. Second operand has 13 states, 10 states have (on average 12.4) internal successors, (124), 13 states have internal predecessors, (124), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 03:10:59,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:10:59,999 INFO L93 Difference]: Finished difference Result 8771 states and 14051 transitions. [2023-11-29 03:11:00,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 03:11:00,000 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 12.4) internal successors, (124), 13 states have internal predecessors, (124), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 110 [2023-11-29 03:11:00,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:11:00,019 INFO L225 Difference]: With dead ends: 8771 [2023-11-29 03:11:00,020 INFO L226 Difference]: Without dead ends: 8771 [2023-11-29 03:11:00,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 208 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=77, Invalid=271, Unknown=2, NotChecked=70, Total=420 [2023-11-29 03:11:00,020 INFO L413 NwaCegarLoop]: 991 mSDtfsCounter, 2450 mSDsluCounter, 4945 mSDsCounter, 0 mSdLazyCounter, 9318 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2466 SdHoareTripleChecker+Valid, 5936 SdHoareTripleChecker+Invalid, 9338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 9318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:11:00,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2466 Valid, 5936 Invalid, 9338 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [20 Valid, 9318 Invalid, 0 Unknown, 0 Unchecked, 22.1s Time] [2023-11-29 03:11:00,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8771 states. [2023-11-29 03:11:00,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8771 to 4284. [2023-11-29 03:11:00,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4284 states, 3496 states have (on average 1.8724256292906178) internal successors, (6546), 4239 states have internal predecessors, (6546), 43 states have call successors, (43), 5 states have call predecessors, (43), 6 states have return successors, (48), 40 states have call predecessors, (48), 43 states have call successors, (48) [2023-11-29 03:11:00,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4284 states to 4284 states and 6637 transitions. [2023-11-29 03:11:00,067 INFO L78 Accepts]: Start accepts. Automaton has 4284 states and 6637 transitions. Word has length 110 [2023-11-29 03:11:00,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:11:00,067 INFO L495 AbstractCegarLoop]: Abstraction has 4284 states and 6637 transitions. [2023-11-29 03:11:00,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 12.4) internal successors, (124), 13 states have internal predecessors, (124), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 03:11:00,067 INFO L276 IsEmpty]: Start isEmpty. Operand 4284 states and 6637 transitions. [2023-11-29 03:11:00,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-29 03:11:00,068 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:11:00,068 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:11:00,076 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Ended with exit code 0 [2023-11-29 03:11:00,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (37)] Ended with exit code 0 [2023-11-29 03:11:00,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-29 03:11:00,469 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr86REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2023-11-29 03:11:00,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:11:00,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1262035840, now seen corresponding path program 1 times [2023-11-29 03:11:00,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:11:00,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [562864315] [2023-11-29 03:11:00,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:11:00,470 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:11:00,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:11:00,471 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:11:00,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2023-11-29 03:11:01,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:11:01,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 837 conjuncts, 59 conjunts are in the unsatisfiable core [2023-11-29 03:11:01,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:11:01,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 03:11:01,394 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 03:11:01,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-29 03:11:01,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 03:11:01,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-11-29 03:11:02,399 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 03:11:02,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 03:11:02,509 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 03:11:02,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 03:11:02,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2023-11-29 03:11:02,563 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 03:11:02,563 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:11:02,624 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4577 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_4577) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2023-11-29 03:11:02,635 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4577 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#4.base| (select (select |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_4577) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (_ bv0 1))) is different from false [2023-11-29 03:11:03,007 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4623 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4577 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_4623))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4577)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-11-29 03:11:03,010 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:11:03,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [562864315] [2023-11-29 03:11:03,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [562864315] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:11:03,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [415104868] [2023-11-29 03:11:03,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:11:03,011 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 03:11:03,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 03:11:03,011 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 03:11:03,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2023-11-29 03:11:05,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:11:05,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 837 conjuncts, 63 conjunts are in the unsatisfiable core [2023-11-29 03:11:05,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:11:05,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 03:11:05,486 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 03:11:05,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-29 03:11:05,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 03:11:05,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-11-29 03:11:06,647 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 03:11:06,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-11-29 03:11:06,813 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 03:11:06,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-11-29 03:11:06,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-11-29 03:11:06,842 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 03:11:06,842 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:11:06,857 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5046 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_5046) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)))) is different from false [2023-11-29 03:11:06,869 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5046 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#4.base| (select (select |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_5046) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)))) is different from false [2023-11-29 03:11:07,240 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5092 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5046 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5092))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5046)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 03:11:07,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [415104868] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:11:07,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:11:07,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2023-11-29 03:11:07,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243866682] [2023-11-29 03:11:07,244 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:11:07,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 03:11:07,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:11:07,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 03:11:07,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=216, Unknown=6, NotChecked=210, Total=506 [2023-11-29 03:11:07,245 INFO L87 Difference]: Start difference. First operand 4284 states and 6637 transitions. Second operand has 15 states, 12 states have (on average 10.666666666666666) internal successors, (128), 15 states have internal predecessors, (128), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 03:11:25,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:11:25,475 INFO L93 Difference]: Finished difference Result 8770 states and 14048 transitions. [2023-11-29 03:11:25,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 03:11:25,475 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 10.666666666666666) internal successors, (128), 15 states have internal predecessors, (128), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 112 [2023-11-29 03:11:25,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:11:25,486 INFO L225 Difference]: With dead ends: 8770 [2023-11-29 03:11:25,486 INFO L226 Difference]: Without dead ends: 8770 [2023-11-29 03:11:25,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 210 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=241, Unknown=6, NotChecked=222, Total=552 [2023-11-29 03:11:25,487 INFO L413 NwaCegarLoop]: 993 mSDtfsCounter, 2435 mSDsluCounter, 7583 mSDsCounter, 0 mSdLazyCounter, 8250 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2451 SdHoareTripleChecker+Valid, 8576 SdHoareTripleChecker+Invalid, 8266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 8250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:11:25,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2451 Valid, 8576 Invalid, 8266 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 8250 Invalid, 0 Unknown, 0 Unchecked, 18.0s Time] [2023-11-29 03:11:25,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8770 states. [2023-11-29 03:11:25,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8770 to 4283. [2023-11-29 03:11:25,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4283 states, 3496 states have (on average 1.8715675057208239) internal successors, (6543), 4238 states have internal predecessors, (6543), 43 states have call successors, (43), 5 states have call predecessors, (43), 6 states have return successors, (48), 40 states have call predecessors, (48), 43 states have call successors, (48) [2023-11-29 03:11:25,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4283 states to 4283 states and 6634 transitions. [2023-11-29 03:11:25,536 INFO L78 Accepts]: Start accepts. Automaton has 4283 states and 6634 transitions. Word has length 112 [2023-11-29 03:11:25,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:11:25,536 INFO L495 AbstractCegarLoop]: Abstraction has 4283 states and 6634 transitions. [2023-11-29 03:11:25,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 10.666666666666666) internal successors, (128), 15 states have internal predecessors, (128), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 03:11:25,536 INFO L276 IsEmpty]: Start isEmpty. Operand 4283 states and 6634 transitions. [2023-11-29 03:11:25,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-29 03:11:25,537 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:11:25,537 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:11:25,549 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (39)] Ended with exit code 0 [2023-11-29 03:11:25,749 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Ended with exit code 0 [2023-11-29 03:11:25,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:11:25,941 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr87REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2023-11-29 03:11:25,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:11:25,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1262035839, now seen corresponding path program 1 times [2023-11-29 03:11:25,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:11:25,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [119830609] [2023-11-29 03:11:25,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:11:25,943 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:11:25,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:11:25,943 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:11:25,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2023-11-29 03:11:26,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:11:26,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 837 conjuncts, 110 conjunts are in the unsatisfiable core [2023-11-29 03:11:26,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:11:26,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 03:11:26,926 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 03:11:26,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-29 03:11:26,934 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 [2023-11-29 03:11:26,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 03:11:26,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 03:11:27,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-11-29 03:11:27,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-11-29 03:11:27,727 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 03:11:27,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-11-29 03:11:27,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-11-29 03:11:27,844 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 03:11:27,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-11-29 03:11:27,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-11-29 03:11:27,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2023-11-29 03:11:27,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-11-29 03:11:27,900 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 03:11:27,900 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:11:28,044 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5560 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_5560) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_5560 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5561 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_5560) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_5561) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-11-29 03:11:28,077 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_5560 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5561 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#4.offset| .cse0 v_ArrVal_5560) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#4.base| .cse0 v_ArrVal_5561) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_5560 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#4.offset| .cse0 v_ArrVal_5560) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse2) (bvadd (_ bv8 32) .cse2))))))) is different from false [2023-11-29 03:11:29,486 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5652 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5653 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5560 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5561 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5653))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5652) .cse0 v_ArrVal_5560) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_5561) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_5652 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5653 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5560 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5652) (select (select (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5653) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5560) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse3) (bvadd (_ bv8 32) .cse3)))))) is different from false [2023-11-29 03:11:29,493 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:11:29,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [119830609] [2023-11-29 03:11:29,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [119830609] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:11:29,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2107857691] [2023-11-29 03:11:29,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:11:29,494 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 03:11:29,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 03:11:29,494 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 03:11:29,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process [2023-11-29 03:13:23,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:23,359 INFO L262 TraceCheckSpWp]: Trace formula consists of 837 conjuncts, 112 conjunts are in the unsatisfiable core [2023-11-29 03:13:23,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:13:23,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 03:13:23,673 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 03:13:23,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-29 03:13:23,680 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 [2023-11-29 03:13:23,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 03:13:23,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 03:13:23,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-11-29 03:13:23,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-29 03:13:24,543 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 03:13:24,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-29 03:13:24,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-11-29 03:13:24,726 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 03:13:24,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-29 03:13:24,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-11-29 03:13:24,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 03:13:24,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-29 03:13:24,761 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 03:13:24,761 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:13:24,814 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6121 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_6121) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_6121 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6122 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_6121) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_6122) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-11-29 03:13:24,854 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_6121 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6122 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#4.offset| .cse0 v_ArrVal_6121) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#4.base| .cse0 v_ArrVal_6122) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_6121 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#4.offset| .cse0 v_ArrVal_6121) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse2) (bvadd (_ bv8 32) .cse2))))))) is different from false [2023-11-29 03:13:26,253 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6213 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6214 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6121 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6214) (select (select (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6213) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6121) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_6213 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6214 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6121 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6122 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6213))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6214) .cse2 v_ArrVal_6121) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_6122) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2023-11-29 03:13:26,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2107857691] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:13:26,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:13:26,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2023-11-29 03:13:26,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803301638] [2023-11-29 03:13:26,263 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:13:26,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 03:13:26,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:13:26,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 03:13:26,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=228, Unknown=6, NotChecked=210, Total=506 [2023-11-29 03:13:26,265 INFO L87 Difference]: Start difference. First operand 4283 states and 6634 transitions. Second operand has 15 states, 12 states have (on average 10.666666666666666) internal successors, (128), 15 states have internal predecessors, (128), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 03:13:55,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:13:55,643 INFO L93 Difference]: Finished difference Result 8769 states and 14045 transitions. [2023-11-29 03:13:55,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 03:13:55,643 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 10.666666666666666) internal successors, (128), 15 states have internal predecessors, (128), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 112 [2023-11-29 03:13:55,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:13:55,651 INFO L225 Difference]: With dead ends: 8769 [2023-11-29 03:13:55,651 INFO L226 Difference]: Without dead ends: 8769 [2023-11-29 03:13:55,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 210 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=105, Invalid=375, Unknown=6, NotChecked=270, Total=756 [2023-11-29 03:13:55,652 INFO L413 NwaCegarLoop]: 990 mSDtfsCounter, 2444 mSDsluCounter, 7154 mSDsCounter, 0 mSdLazyCounter, 14109 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2460 SdHoareTripleChecker+Valid, 8144 SdHoareTripleChecker+Invalid, 14127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 14109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.9s IncrementalHoareTripleChecker+Time [2023-11-29 03:13:55,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2460 Valid, 8144 Invalid, 14127 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18 Valid, 14109 Invalid, 0 Unknown, 0 Unchecked, 28.9s Time] [2023-11-29 03:13:55,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8769 states. [2023-11-29 03:13:55,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8769 to 4282. [2023-11-29 03:13:55,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4282 states, 3496 states have (on average 1.8707093821510297) internal successors, (6540), 4237 states have internal predecessors, (6540), 43 states have call successors, (43), 5 states have call predecessors, (43), 6 states have return successors, (48), 40 states have call predecessors, (48), 43 states have call successors, (48) [2023-11-29 03:13:55,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4282 states to 4282 states and 6631 transitions. [2023-11-29 03:13:55,701 INFO L78 Accepts]: Start accepts. Automaton has 4282 states and 6631 transitions. Word has length 112 [2023-11-29 03:13:55,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:13:55,702 INFO L495 AbstractCegarLoop]: Abstraction has 4282 states and 6631 transitions. [2023-11-29 03:13:55,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 10.666666666666666) internal successors, (128), 15 states have internal predecessors, (128), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 03:13:55,702 INFO L276 IsEmpty]: Start isEmpty. Operand 4282 states and 6631 transitions. [2023-11-29 03:13:55,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-29 03:13:55,702 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:13:55,703 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:13:55,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (41)] Ended with exit code 0 [2023-11-29 03:13:55,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Ended with exit code 0 [2023-11-29 03:13:56,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:13:56,103 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr90REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2023-11-29 03:13:56,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:56,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1632303808, now seen corresponding path program 1 times [2023-11-29 03:13:56,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:13:56,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [815100643] [2023-11-29 03:13:56,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:56,104 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:13:56,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:13:56,105 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:13:56,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2023-11-29 03:13:56,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:57,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 61 conjunts are in the unsatisfiable core [2023-11-29 03:13:57,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:13:57,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 03:13:57,143 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 03:13:57,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-29 03:13:57,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 03:13:57,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-11-29 03:13:58,157 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 03:13:58,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 03:13:58,278 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 03:13:58,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 03:13:58,362 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 03:13:58,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 03:13:58,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2023-11-29 03:13:58,411 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 03:13:58,412 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:13:58,470 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6653 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem42#1.base| v_ArrVal_6653) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)))) is different from false [2023-11-29 03:13:58,480 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6653 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#4.base| (select (select |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_6653) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 03:13:58,492 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6653 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6652 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_6652))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6653)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 03:13:58,504 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6653 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6652 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#4.base| (select (select |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6652))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6653)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-11-29 03:13:58,905 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6653 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6699 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6652 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6699))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6652)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6653)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-11-29 03:13:58,908 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:13:58,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [815100643] [2023-11-29 03:13:58,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [815100643] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:13:58,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1149022071] [2023-11-29 03:13:58,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:58,909 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 03:13:58,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 03:13:58,910 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 03:13:58,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (43)] Waiting until timeout for monitored process [2023-11-29 03:14:22,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:14:23,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 65 conjunts are in the unsatisfiable core [2023-11-29 03:14:23,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:14:23,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 03:14:23,350 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 03:14:23,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-29 03:14:23,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 03:14:23,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-11-29 03:14:24,381 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 03:14:24,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-11-29 03:14:24,529 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 03:14:24,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-11-29 03:14:24,622 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 03:14:24,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-11-29 03:14:24,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-11-29 03:14:24,658 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 03:14:24,658 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:14:28,744 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7138 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#4.base| (select (select |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_7138) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)))) is different from false [2023-11-29 03:14:28,757 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7137 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7138 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_7137))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7138)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-11-29 03:14:28,770 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7137 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7138 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#4.base| (select (select |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7137))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7138)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 03:14:29,140 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7184 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7137 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7138 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7184))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7137)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7138)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (_ bv0 1))) is different from false [2023-11-29 03:14:29,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1149022071] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:14:29,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:14:29,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2023-11-29 03:14:29,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985757953] [2023-11-29 03:14:29,144 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:14:29,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 03:14:29,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:14:29,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 03:14:29,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=309, Unknown=10, NotChecked=396, Total=812 [2023-11-29 03:14:29,145 INFO L87 Difference]: Start difference. First operand 4282 states and 6631 transitions. Second operand has 17 states, 14 states have (on average 9.428571428571429) internal successors, (132), 17 states have internal predecessors, (132), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 03:14:47,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:14:47,325 INFO L93 Difference]: Finished difference Result 8768 states and 14042 transitions. [2023-11-29 03:14:47,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 03:14:47,325 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 9.428571428571429) internal successors, (132), 17 states have internal predecessors, (132), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 114 [2023-11-29 03:14:47,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:14:47,332 INFO L225 Difference]: With dead ends: 8768 [2023-11-29 03:14:47,332 INFO L226 Difference]: Without dead ends: 8768 [2023-11-29 03:14:47,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 212 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=106, Invalid=340, Unknown=10, NotChecked=414, Total=870 [2023-11-29 03:14:47,333 INFO L413 NwaCegarLoop]: 991 mSDtfsCounter, 2433 mSDsluCounter, 7910 mSDsCounter, 0 mSdLazyCounter, 8398 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2449 SdHoareTripleChecker+Valid, 8901 SdHoareTripleChecker+Invalid, 8413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 8398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.9s IncrementalHoareTripleChecker+Time [2023-11-29 03:14:47,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2449 Valid, 8901 Invalid, 8413 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 8398 Invalid, 0 Unknown, 0 Unchecked, 17.9s Time] [2023-11-29 03:14:47,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8768 states. [2023-11-29 03:14:47,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8768 to 4281. [2023-11-29 03:14:47,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4281 states, 3496 states have (on average 1.8698512585812357) internal successors, (6537), 4236 states have internal predecessors, (6537), 43 states have call successors, (43), 5 states have call predecessors, (43), 6 states have return successors, (48), 40 states have call predecessors, (48), 43 states have call successors, (48) [2023-11-29 03:14:47,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4281 states to 4281 states and 6628 transitions. [2023-11-29 03:14:47,406 INFO L78 Accepts]: Start accepts. Automaton has 4281 states and 6628 transitions. Word has length 114 [2023-11-29 03:14:47,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:14:47,407 INFO L495 AbstractCegarLoop]: Abstraction has 4281 states and 6628 transitions. [2023-11-29 03:14:47,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 9.428571428571429) internal successors, (132), 17 states have internal predecessors, (132), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 03:14:47,407 INFO L276 IsEmpty]: Start isEmpty. Operand 4281 states and 6628 transitions. [2023-11-29 03:14:47,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-29 03:14:47,408 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:14:47,408 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:14:47,417 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Ended with exit code 0 [2023-11-29 03:14:47,632 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (43)] Ended with exit code 0 [2023-11-29 03:14:47,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-29 03:14:47,809 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr91REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1092 more)] === [2023-11-29 03:14:47,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:14:47,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1632303807, now seen corresponding path program 1 times [2023-11-29 03:14:47,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:14:47,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1575168645] [2023-11-29 03:14:47,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:14:47,810 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:14:47,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:14:47,811 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:14:47,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2023-11-29 03:14:48,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:14:48,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 113 conjunts are in the unsatisfiable core [2023-11-29 03:14:48,800 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:14:48,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 03:14:48,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 03:14:48,932 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 03:14:48,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-29 03:14:48,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 03:14:48,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 03:14:49,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-11-29 03:14:49,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-11-29 03:14:49,710 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 03:14:49,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-11-29 03:14:49,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-11-29 03:14:49,823 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 03:14:49,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-11-29 03:14:49,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-11-29 03:14:49,908 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 03:14:49,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-11-29 03:14:49,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-11-29 03:14:49,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2023-11-29 03:14:49,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-11-29 03:14:49,967 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 03:14:49,967 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:14:50,125 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7670 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7669 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem42#1.base| v_ArrVal_7669) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem42#1.base| v_ArrVal_7670) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_7669 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem42#1.base| v_ArrVal_7669) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd .cse1 (_ bv8 32)) (bvadd .cse1 (_ bv12 32))))))) is different from false [2023-11-29 03:14:50,155 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7669 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#4.offset| .cse1 v_ArrVal_7669) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_7670 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7669 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#4.offset| .cse1 v_ArrVal_7669) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#4.base| .cse1 v_ArrVal_7670) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2023-11-29 03:14:50,232 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7669 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7668 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7667 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_7667) (select (select (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_7668) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7669) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_7670 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7669 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7668 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7667 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_7668))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_7667) .cse2 v_ArrVal_7669) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_7670) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2023-11-29 03:14:50,313 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7669 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7668 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7667 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#4.offset| .cse1 v_ArrVal_7667) (select (select (store |c_#memory_$Pointer$#4.base| .cse1 v_ArrVal_7668) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7669) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_7670 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7669 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7668 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7667 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#4.base| .cse1 v_ArrVal_7668))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#4.offset| .cse1 v_ArrVal_7667) .cse3 v_ArrVal_7669) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_7670) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))))) is different from false [2023-11-29 03:14:51,860 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7670 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7669 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7668 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7667 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7762 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7761 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7761))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_7668))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7762) .cse0 v_ArrVal_7667) .cse1 v_ArrVal_7669) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_7670) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_7669 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7668 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7667 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7762 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7761 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7761))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7762) .cse6 v_ArrVal_7667) (select (select (store .cse7 .cse6 v_ArrVal_7668) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7669))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse5 (_ bv8 32)) (bvadd .cse5 (_ bv12 32))))))) is different from false [2023-11-29 03:14:51,874 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:14:51,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1575168645] [2023-11-29 03:14:51,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1575168645] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:14:51,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [375003316] [2023-11-29 03:14:51,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:14:51,874 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 03:14:51,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 03:14:51,875 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 03:14:51,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152134ba-1270-4e5b-a178-ed3418695702/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (45)] Waiting until timeout for monitored process