./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/20020406-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/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_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/20020406-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/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_676d6775-f227-4f41-a5fd-d0f83e585731/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 1ecdf6fdf9ec72145fabb79894bcc278b3e5646bc4893dbabc4bb180fa53c5ae --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:12:00,940 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:12:01,005 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-29 04:12:01,010 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:12:01,010 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:12:01,035 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:12:01,036 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:12:01,037 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:12:01,037 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:12:01,038 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:12:01,038 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:12:01,039 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:12:01,040 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:12:01,040 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:12:01,041 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:12:01,041 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:12:01,042 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:12:01,042 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:12:01,043 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:12:01,043 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:12:01,044 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 04:12:01,044 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 04:12:01,045 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 04:12:01,045 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:12:01,046 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 04:12:01,046 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 04:12:01,046 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:12:01,047 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:12:01,047 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:12:01,048 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:12:01,048 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:12:01,048 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:12:01,049 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:12:01,049 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:12:01,049 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:12:01,050 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:12:01,050 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:12:01,050 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:12:01,050 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:12:01,050 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:12:01,050 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:12:01,051 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_676d6775-f227-4f41-a5fd-d0f83e585731/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ecdf6fdf9ec72145fabb79894bcc278b3e5646bc4893dbabc4bb180fa53c5ae [2023-11-29 04:12:01,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:12:01,303 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:12:01,305 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:12:01,306 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:12:01,307 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:12:01,308 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/memsafety/20020406-1.i [2023-11-29 04:12:04,092 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:12:04,313 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:12:04,314 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/sv-benchmarks/c/memsafety/20020406-1.i [2023-11-29 04:12:04,331 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/data/e295e8fd5/fa667f4df88f4fbbb6180c3e937b470e/FLAGe03555f51 [2023-11-29 04:12:04,345 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/data/e295e8fd5/fa667f4df88f4fbbb6180c3e937b470e [2023-11-29 04:12:04,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:12:04,349 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:12:04,349 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:12:04,350 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:12:04,354 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:12:04,355 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:12:04" (1/1) ... [2023-11-29 04:12:04,355 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e439e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:12:04, skipping insertion in model container [2023-11-29 04:12:04,356 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:12:04" (1/1) ... [2023-11-29 04:12:04,411 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:12:04,786 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:12:04,798 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-29 04:12:04,799 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@380b86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:12:04, skipping insertion in model container [2023-11-29 04:12:04,799 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:12:04,799 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-29 04:12:04,801 INFO L158 Benchmark]: Toolchain (without parser) took 451.60ms. Allocated memory is still 146.8MB. Free memory was 107.9MB in the beginning and 92.7MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-29 04:12:04,801 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 146.8MB. Free memory is still 118.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:12:04,802 INFO L158 Benchmark]: CACSL2BoogieTranslator took 449.90ms. Allocated memory is still 146.8MB. Free memory was 107.4MB in the beginning and 92.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-29 04:12:04,803 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 146.8MB. Free memory is still 118.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 449.90ms. Allocated memory is still 146.8MB. Free memory was 107.4MB in the beginning and 92.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 897]: 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_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/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_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/20020406-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/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_676d6775-f227-4f41-a5fd-d0f83e585731/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 1ecdf6fdf9ec72145fabb79894bcc278b3e5646bc4893dbabc4bb180fa53c5ae --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:12:06,562 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:12:06,629 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-29 04:12:06,634 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:12:06,645 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:12:06,671 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:12:06,671 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:12:06,672 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:12:06,672 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:12:06,673 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:12:06,674 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:12:06,674 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:12:06,675 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:12:06,675 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:12:06,676 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:12:06,676 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:12:06,677 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:12:06,677 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:12:06,678 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:12:06,678 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:12:06,679 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 04:12:06,679 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 04:12:06,680 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 04:12:06,680 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:12:06,681 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 04:12:06,681 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 04:12:06,682 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 04:12:06,682 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 04:12:06,682 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:12:06,683 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:12:06,683 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:12:06,684 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:12:06,684 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:12:06,684 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:12:06,684 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:12:06,685 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:12:06,685 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:12:06,685 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 04:12:06,685 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 04:12:06,686 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:12:06,686 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:12:06,686 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:12:06,686 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:12:06,686 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 04:12:06,687 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_676d6775-f227-4f41-a5fd-d0f83e585731/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ecdf6fdf9ec72145fabb79894bcc278b3e5646bc4893dbabc4bb180fa53c5ae [2023-11-29 04:12:06,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:12:06,982 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:12:06,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:12:06,986 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:12:06,986 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:12:06,988 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/memsafety/20020406-1.i [2023-11-29 04:12:09,757 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:12:10,016 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:12:10,016 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/sv-benchmarks/c/memsafety/20020406-1.i [2023-11-29 04:12:10,032 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/data/c0d145a1c/c9779c7687644ee1b65ab7ac5e498826/FLAGc21b5b8be [2023-11-29 04:12:10,045 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/data/c0d145a1c/c9779c7687644ee1b65ab7ac5e498826 [2023-11-29 04:12:10,047 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:12:10,049 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:12:10,050 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:12:10,050 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:12:10,055 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:12:10,055 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:12:10" (1/1) ... [2023-11-29 04:12:10,056 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44b67e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:12:10, skipping insertion in model container [2023-11-29 04:12:10,056 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:12:10" (1/1) ... [2023-11-29 04:12:10,106 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:12:10,642 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:12:10,656 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-29 04:12:10,662 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:12:10,701 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:12:10,707 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:12:10,748 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:12:10,821 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:12:10,822 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:12:10 WrapperNode [2023-11-29 04:12:10,822 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:12:10,823 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:12:10,823 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:12:10,823 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:12:10,831 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:12:10" (1/1) ... [2023-11-29 04:12:10,855 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:12:10" (1/1) ... [2023-11-29 04:12:10,886 INFO L138 Inliner]: procedures = 286, calls = 76, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2023-11-29 04:12:10,887 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:12:10,888 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:12:10,888 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:12:10,888 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:12:10,899 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:12:10" (1/1) ... [2023-11-29 04:12:10,899 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:12:10" (1/1) ... [2023-11-29 04:12:10,904 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:12:10" (1/1) ... [2023-11-29 04:12:10,935 INFO L175 MemorySlicer]: Split 30 memory accesses to 4 slices as follows [2, 17, 9, 2]. 57 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 16 writes are split as follows [0, 8, 6, 2]. [2023-11-29 04:12:10,935 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:12:10" (1/1) ... [2023-11-29 04:12:10,935 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:12:10" (1/1) ... [2023-11-29 04:12:10,954 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:12:10" (1/1) ... [2023-11-29 04:12:10,957 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:12:10" (1/1) ... [2023-11-29 04:12:10,961 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:12:10" (1/1) ... [2023-11-29 04:12:10,964 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:12:10" (1/1) ... [2023-11-29 04:12:10,970 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:12:10,971 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:12:10,971 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:12:10,971 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:12:10,972 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:12:10" (1/1) ... [2023-11-29 04:12:10,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:12:10,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:12:11,001 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:12:11,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:12:11,047 INFO L130 BoogieDeclarations]: Found specification of procedure DUPFFdeg [2023-11-29 04:12:11,047 INFO L138 BoogieDeclarations]: Found implementation of procedure DUPFFdeg [2023-11-29 04:12:11,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-29 04:12:11,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-29 04:12:11,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-29 04:12:11,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-29 04:12:11,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 04:12:11,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 04:12:11,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 04:12:11,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 04:12:11,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-29 04:12:11,048 INFO L130 BoogieDeclarations]: Found specification of procedure DUPFFnew [2023-11-29 04:12:11,048 INFO L138 BoogieDeclarations]: Found implementation of procedure DUPFFnew [2023-11-29 04:12:11,048 INFO L130 BoogieDeclarations]: Found specification of procedure DUPFFfree [2023-11-29 04:12:11,048 INFO L138 BoogieDeclarations]: Found implementation of procedure DUPFFfree [2023-11-29 04:12:11,049 INFO L130 BoogieDeclarations]: Found specification of procedure DUPFFshift_add [2023-11-29 04:12:11,049 INFO L138 BoogieDeclarations]: Found implementation of procedure DUPFFshift_add [2023-11-29 04:12:11,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 04:12:11,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-29 04:12:11,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-29 04:12:11,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-29 04:12:11,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-29 04:12:11,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 04:12:11,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-29 04:12:11,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-29 04:12:11,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-29 04:12:11,050 INFO L130 BoogieDeclarations]: Found specification of procedure FFmul [2023-11-29 04:12:11,050 INFO L138 BoogieDeclarations]: Found implementation of procedure FFmul [2023-11-29 04:12:11,050 INFO L130 BoogieDeclarations]: Found specification of procedure DUPFFexgcd [2023-11-29 04:12:11,050 INFO L138 BoogieDeclarations]: Found implementation of procedure DUPFFexgcd [2023-11-29 04:12:11,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 04:12:11,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:12:11,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 04:12:11,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 04:12:11,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 04:12:11,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-29 04:12:11,051 INFO L130 BoogieDeclarations]: Found specification of procedure DUPFFswap [2023-11-29 04:12:11,051 INFO L138 BoogieDeclarations]: Found implementation of procedure DUPFFswap [2023-11-29 04:12:11,051 INFO L130 BoogieDeclarations]: Found specification of procedure DUPFFcopy [2023-11-29 04:12:11,051 INFO L138 BoogieDeclarations]: Found implementation of procedure DUPFFcopy [2023-11-29 04:12:11,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:12:11,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:12:11,223 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:12:11,225 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:12:11,925 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:12:11,979 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:12:11,979 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 04:12:11,980 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:12:11 BoogieIcfgContainer [2023-11-29 04:12:11,980 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:12:11,982 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:12:11,983 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:12:11,986 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:12:11,986 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:12:10" (1/3) ... [2023-11-29 04:12:11,987 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6524cd7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:12:11, skipping insertion in model container [2023-11-29 04:12:11,987 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:12:10" (2/3) ... [2023-11-29 04:12:11,987 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6524cd7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:12:11, skipping insertion in model container [2023-11-29 04:12:11,987 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:12:11" (3/3) ... [2023-11-29 04:12:11,988 INFO L112 eAbstractionObserver]: Analyzing ICFG 20020406-1.i [2023-11-29 04:12:12,008 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:12:12,008 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 55 error locations. [2023-11-29 04:12:12,058 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:12:12,064 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;@2904d081, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:12:12,065 INFO L358 AbstractCegarLoop]: Starting to check reachability of 55 error locations. [2023-11-29 04:12:12,070 INFO L276 IsEmpty]: Start isEmpty. Operand has 167 states, 70 states have (on average 1.9428571428571428) internal successors, (136), 126 states have internal predecessors, (136), 35 states have call successors, (35), 8 states have call predecessors, (35), 8 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-29 04:12:12,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-29 04:12:12,087 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:12:12,088 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-29 04:12:12,089 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-11-29 04:12:12,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:12:12,094 INFO L85 PathProgramCache]: Analyzing trace with hash 11050797, now seen corresponding path program 1 times [2023-11-29 04:12:12,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:12:12,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [92838601] [2023-11-29 04:12:12,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:12,108 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:12:12,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:12:12,111 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:12:12,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-29 04:12:12,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:12:12,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:12:12,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:12:12,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 04:12:12,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:12:12,344 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:12:12,345 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:12:12,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [92838601] [2023-11-29 04:12:12,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [92838601] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:12:12,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:12:12,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:12:12,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022837700] [2023-11-29 04:12:12,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:12:12,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:12:12,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:12:12,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:12:12,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:12:12,399 INFO L87 Difference]: Start difference. First operand has 167 states, 70 states have (on average 1.9428571428571428) internal successors, (136), 126 states have internal predecessors, (136), 35 states have call successors, (35), 8 states have call predecessors, (35), 8 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:12:12,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:12:12,797 INFO L93 Difference]: Finished difference Result 162 states and 198 transitions. [2023-11-29 04:12:12,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:12:12,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-29 04:12:12,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:12:12,809 INFO L225 Difference]: With dead ends: 162 [2023-11-29 04:12:12,809 INFO L226 Difference]: Without dead ends: 161 [2023-11-29 04:12:12,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:12:12,814 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 17 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 04:12:12,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 291 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 04:12:12,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-11-29 04:12:12,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2023-11-29 04:12:12,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 68 states have (on average 1.8676470588235294) internal successors, (127), 120 states have internal predecessors, (127), 35 states have call successors, (35), 8 states have call predecessors, (35), 8 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-29 04:12:12,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 197 transitions. [2023-11-29 04:12:12,868 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 197 transitions. Word has length 4 [2023-11-29 04:12:12,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:12:12,868 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 197 transitions. [2023-11-29 04:12:12,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:12:12,869 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 197 transitions. [2023-11-29 04:12:12,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-29 04:12:12,869 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:12:12,869 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-29 04:12:12,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-29 04:12:13,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:12:13,070 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting DUPFFnewErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-11-29 04:12:13,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:12:13,071 INFO L85 PathProgramCache]: Analyzing trace with hash 11050798, now seen corresponding path program 1 times [2023-11-29 04:12:13,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:12:13,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [146792426] [2023-11-29 04:12:13,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:13,072 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:12:13,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:12:13,074 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:12:13,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-29 04:12:13,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:12:13,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:12:13,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:12:13,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 04:12:13,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:12:13,170 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:12:13,170 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:12:13,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [146792426] [2023-11-29 04:12:13,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [146792426] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:12:13,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:12:13,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:12:13,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967352830] [2023-11-29 04:12:13,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:12:13,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:12:13,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:12:13,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:12:13,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:12:13,174 INFO L87 Difference]: Start difference. First operand 161 states and 197 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:12:13,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:12:13,603 INFO L93 Difference]: Finished difference Result 163 states and 204 transitions. [2023-11-29 04:12:13,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:12:13,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-29 04:12:13,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:12:13,606 INFO L225 Difference]: With dead ends: 163 [2023-11-29 04:12:13,607 INFO L226 Difference]: Without dead ends: 163 [2023-11-29 04:12:13,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:12:13,608 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 4 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 04:12:13,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 303 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 04:12:13,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-11-29 04:12:13,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 162. [2023-11-29 04:12:13,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 70 states have (on average 1.8285714285714285) internal successors, (128), 121 states have internal predecessors, (128), 35 states have call successors, (35), 8 states have call predecessors, (35), 8 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-29 04:12:13,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 198 transitions. [2023-11-29 04:12:13,627 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 198 transitions. Word has length 4 [2023-11-29 04:12:13,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:12:13,627 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 198 transitions. [2023-11-29 04:12:13,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:12:13,627 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 198 transitions. [2023-11-29 04:12:13,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-29 04:12:13,628 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:12:13,628 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 04:12:13,630 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-29 04:12:13,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:12:13,829 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting DUPFFnewErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-11-29 04:12:13,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:12:13,830 INFO L85 PathProgramCache]: Analyzing trace with hash 2029880815, now seen corresponding path program 1 times [2023-11-29 04:12:13,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:12:13,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1045057767] [2023-11-29 04:12:13,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:13,831 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:12:13,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:12:13,832 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:12:13,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-29 04:12:13,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:12:13,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 04:12:13,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:12:13,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 04:12:13,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 04:12:14,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:14,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-29 04:12:14,046 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 04:12:14,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-29 04:12:14,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:12:14,063 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:12:14,063 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:12:14,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1045057767] [2023-11-29 04:12:14,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1045057767] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:12:14,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:12:14,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:12:14,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362737170] [2023-11-29 04:12:14,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:12:14,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:12:14,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:12:14,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:12:14,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:12:14,065 INFO L87 Difference]: Start difference. First operand 162 states and 198 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:12:14,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:12:14,521 INFO L93 Difference]: Finished difference Result 158 states and 194 transitions. [2023-11-29 04:12:14,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:12:14,522 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-29 04:12:14,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:12:14,524 INFO L225 Difference]: With dead ends: 158 [2023-11-29 04:12:14,524 INFO L226 Difference]: Without dead ends: 158 [2023-11-29 04:12:14,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:12:14,525 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 11 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 04:12:14,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 393 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 04:12:14,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-11-29 04:12:14,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 156. [2023-11-29 04:12:14,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 68 states have (on average 1.7941176470588236) internal successors, (122), 115 states have internal predecessors, (122), 35 states have call successors, (35), 8 states have call predecessors, (35), 8 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-29 04:12:14,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 192 transitions. [2023-11-29 04:12:14,541 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 192 transitions. Word has length 6 [2023-11-29 04:12:14,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:12:14,542 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 192 transitions. [2023-11-29 04:12:14,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:12:14,542 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 192 transitions. [2023-11-29 04:12:14,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-29 04:12:14,542 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:12:14,543 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:12:14,544 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-29 04:12:14,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:12:14,743 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting DUPFFnewErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-11-29 04:12:14,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:12:14,744 INFO L85 PathProgramCache]: Analyzing trace with hash 800610903, now seen corresponding path program 1 times [2023-11-29 04:12:14,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:12:14,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [337754444] [2023-11-29 04:12:14,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:14,745 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:12:14,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:12:14,746 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:12:14,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-29 04:12:14,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:12:14,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 04:12:14,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:12:14,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 04:12:14,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 04:12:14,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 04:12:14,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:12:14,881 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:12:14,882 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:12:14,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [337754444] [2023-11-29 04:12:14,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [337754444] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:12:14,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:12:14,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:12:14,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712685965] [2023-11-29 04:12:14,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:12:14,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:12:14,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:12:14,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:12:14,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:12:14,884 INFO L87 Difference]: Start difference. First operand 156 states and 192 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:12:16,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:12:16,179 INFO L93 Difference]: Finished difference Result 158 states and 199 transitions. [2023-11-29 04:12:16,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:12:16,180 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-29 04:12:16,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:12:16,182 INFO L225 Difference]: With dead ends: 158 [2023-11-29 04:12:16,182 INFO L226 Difference]: Without dead ends: 158 [2023-11-29 04:12:16,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 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 04:12:16,183 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 10 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:12:16,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 563 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 04:12:16,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-11-29 04:12:16,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 155. [2023-11-29 04:12:16,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 68 states have (on average 1.7794117647058822) internal successors, (121), 114 states have internal predecessors, (121), 35 states have call successors, (35), 8 states have call predecessors, (35), 8 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-29 04:12:16,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 191 transitions. [2023-11-29 04:12:16,198 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 191 transitions. Word has length 8 [2023-11-29 04:12:16,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:12:16,198 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 191 transitions. [2023-11-29 04:12:16,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:12:16,199 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 191 transitions. [2023-11-29 04:12:16,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-29 04:12:16,199 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:12:16,199 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:12:16,201 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-11-29 04:12:16,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:12:16,400 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting DUPFFnewErr7ASSERT_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-11-29 04:12:16,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:12:16,401 INFO L85 PathProgramCache]: Analyzing trace with hash -950865727, now seen corresponding path program 1 times [2023-11-29 04:12:16,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:12:16,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [120556942] [2023-11-29 04:12:16,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:16,401 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:12:16,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:12:16,402 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:12:16,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-29 04:12:16,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:12:16,485 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 04:12:16,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:12:16,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 04:12:16,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 04:12:16,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 04:12:16,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-11-29 04:12:16,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:12:16,648 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:12:16,648 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:12:16,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [120556942] [2023-11-29 04:12:16,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [120556942] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:12:16,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:12:16,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:12:16,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865785245] [2023-11-29 04:12:16,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:12:16,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:12:16,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:12:16,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:12:16,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:12:16,650 INFO L87 Difference]: Start difference. First operand 155 states and 191 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:12:20,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 04:12:21,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:12:21,544 INFO L93 Difference]: Finished difference Result 166 states and 202 transitions. [2023-11-29 04:12:21,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:12:21,545 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-29 04:12:21,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:12:21,546 INFO L225 Difference]: With dead ends: 166 [2023-11-29 04:12:21,547 INFO L226 Difference]: Without dead ends: 166 [2023-11-29 04:12:21,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-11-29 04:12:21,548 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 19 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-29 04:12:21,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 892 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 253 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2023-11-29 04:12:21,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-11-29 04:12:21,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2023-11-29 04:12:21,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 78 states have (on average 1.6923076923076923) internal successors, (132), 124 states have internal predecessors, (132), 35 states have call successors, (35), 9 states have call predecessors, (35), 9 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-29 04:12:21,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 202 transitions. [2023-11-29 04:12:21,560 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 202 transitions. Word has length 9 [2023-11-29 04:12:21,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:12:21,560 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 202 transitions. [2023-11-29 04:12:21,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:12:21,561 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 202 transitions. [2023-11-29 04:12:21,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-29 04:12:21,561 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:12:21,561 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:12:21,564 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-29 04:12:21,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:12:21,762 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-11-29 04:12:21,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:12:21,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1802196770, now seen corresponding path program 1 times [2023-11-29 04:12:21,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:12:21,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [722117342] [2023-11-29 04:12:21,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:21,763 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:12:21,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:12:21,764 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:12:21,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-29 04:12:21,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:12:21,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:12:21,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:12:21,975 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 04:12:21,975 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:12:21,975 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:12:21,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [722117342] [2023-11-29 04:12:21,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [722117342] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:12:21,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:12:21,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:12:21,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854291887] [2023-11-29 04:12:21,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:12:21,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:12:21,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:12:21,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:12:21,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:12:21,977 INFO L87 Difference]: Start difference. First operand 166 states and 202 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 04:12:22,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:12:22,440 INFO L93 Difference]: Finished difference Result 174 states and 214 transitions. [2023-11-29 04:12:22,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:12:22,440 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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 15 [2023-11-29 04:12:22,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:12:22,442 INFO L225 Difference]: With dead ends: 174 [2023-11-29 04:12:22,442 INFO L226 Difference]: Without dead ends: 171 [2023-11-29 04:12:22,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:12:22,443 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 16 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 04:12:22,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 625 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 04:12:22,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-11-29 04:12:22,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2023-11-29 04:12:22,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 82 states have (on average 1.670731707317073) internal successors, (137), 129 states have internal predecessors, (137), 35 states have call successors, (35), 9 states have call predecessors, (35), 10 states have return successors, (39), 35 states have call predecessors, (39), 35 states have call successors, (39) [2023-11-29 04:12:22,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 211 transitions. [2023-11-29 04:12:22,453 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 211 transitions. Word has length 15 [2023-11-29 04:12:22,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:12:22,454 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 211 transitions. [2023-11-29 04:12:22,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 04:12:22,454 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 211 transitions. [2023-11-29 04:12:22,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-29 04:12:22,454 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:12:22,454 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:12:22,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-29 04:12:22,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:12:22,658 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-11-29 04:12:22,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:12:22,658 INFO L85 PathProgramCache]: Analyzing trace with hash -488975304, now seen corresponding path program 1 times [2023-11-29 04:12:22,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:12:22,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [62779667] [2023-11-29 04:12:22,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:22,659 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:12:22,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:12:22,660 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:12:22,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-29 04:12:22,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:12:22,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:12:22,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:12:22,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:12:22,910 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:12:23,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:12:23,127 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:12:23,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [62779667] [2023-11-29 04:12:23,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [62779667] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:12:23,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:12:23,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-29 04:12:23,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896260002] [2023-11-29 04:12:23,128 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:12:23,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 04:12:23,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:12:23,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 04:12:23,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:12:23,130 INFO L87 Difference]: Start difference. First operand 171 states and 211 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 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 04:12:24,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:12:24,225 INFO L93 Difference]: Finished difference Result 200 states and 254 transitions. [2023-11-29 04:12:24,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 04:12:24,226 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 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 16 [2023-11-29 04:12:24,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:12:24,228 INFO L225 Difference]: With dead ends: 200 [2023-11-29 04:12:24,228 INFO L226 Difference]: Without dead ends: 194 [2023-11-29 04:12:24,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2023-11-29 04:12:24,229 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 55 mSDsluCounter, 935 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 1099 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 04:12:24,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 1099 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 04:12:24,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-11-29 04:12:24,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 187. [2023-11-29 04:12:24,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 98 states have (on average 1.6428571428571428) internal successors, (161), 144 states have internal predecessors, (161), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (39), 35 states have call predecessors, (39), 35 states have call successors, (39) [2023-11-29 04:12:24,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 235 transitions. [2023-11-29 04:12:24,242 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 235 transitions. Word has length 16 [2023-11-29 04:12:24,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:12:24,242 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 235 transitions. [2023-11-29 04:12:24,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 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 04:12:24,242 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 235 transitions. [2023-11-29 04:12:24,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-29 04:12:24,243 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:12:24,243 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:12:24,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-11-29 04:12:24,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:12:24,446 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-11-29 04:12:24,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:12:24,447 INFO L85 PathProgramCache]: Analyzing trace with hash 175222622, now seen corresponding path program 2 times [2023-11-29 04:12:24,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:12:24,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1248265877] [2023-11-29 04:12:24,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:12:24,447 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:12:24,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:12:24,448 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:12:24,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-29 04:12:24,558 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 04:12:24,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:12:24,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:12:24,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:12:24,594 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 04:12:24,594 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:12:24,594 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:12:24,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1248265877] [2023-11-29 04:12:24,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1248265877] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:12:24,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:12:24,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:12:24,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912564289] [2023-11-29 04:12:24,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:12:24,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:12:24,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:12:24,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:12:24,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:12:24,596 INFO L87 Difference]: Start difference. First operand 187 states and 235 transitions. Second operand has 6 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 04:12:25,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:12:25,117 INFO L93 Difference]: Finished difference Result 185 states and 233 transitions. [2023-11-29 04:12:25,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:12:25,118 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 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 19 [2023-11-29 04:12:25,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:12:25,119 INFO L225 Difference]: With dead ends: 185 [2023-11-29 04:12:25,119 INFO L226 Difference]: Without dead ends: 185 [2023-11-29 04:12:25,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:12:25,120 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 17 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 04:12:25,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 641 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 04:12:25,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-11-29 04:12:25,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2023-11-29 04:12:25,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 98 states have (on average 1.6224489795918366) internal successors, (159), 142 states have internal predecessors, (159), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (39), 35 states have call predecessors, (39), 35 states have call successors, (39) [2023-11-29 04:12:25,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 233 transitions. [2023-11-29 04:12:25,127 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 233 transitions. Word has length 19 [2023-11-29 04:12:25,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:12:25,127 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 233 transitions. [2023-11-29 04:12:25,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 04:12:25,128 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 233 transitions. [2023-11-29 04:12:25,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-29 04:12:25,128 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:12:25,128 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:12:25,131 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-11-29 04:12:25,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:12:25,329 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-11-29 04:12:25,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:12:25,329 INFO L85 PathProgramCache]: Analyzing trace with hash 175222623, now seen corresponding path program 1 times [2023-11-29 04:12:25,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:12:25,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [565111357] [2023-11-29 04:12:25,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:25,330 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:12:25,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:12:25,331 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:12:25,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-29 04:12:25,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:12:25,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 04:12:25,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:12:25,688 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:12:25,688 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:12:26,042 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:12:26,042 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:12:26,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [565111357] [2023-11-29 04:12:26,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [565111357] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:12:26,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:12:26,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2023-11-29 04:12:26,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153260738] [2023-11-29 04:12:26,043 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:12:26,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 04:12:26,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:12:26,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 04:12:26,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2023-11-29 04:12:26,044 INFO L87 Difference]: Start difference. First operand 185 states and 233 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 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 04:12:27,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:12:27,707 INFO L93 Difference]: Finished difference Result 212 states and 277 transitions. [2023-11-29 04:12:27,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 04:12:27,708 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 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 19 [2023-11-29 04:12:27,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:12:27,710 INFO L225 Difference]: With dead ends: 212 [2023-11-29 04:12:27,710 INFO L226 Difference]: Without dead ends: 206 [2023-11-29 04:12:27,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=340, Invalid=850, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 04:12:27,711 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 94 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 1547 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:12:27,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 1547 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 04:12:27,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2023-11-29 04:12:27,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 188. [2023-11-29 04:12:27,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 101 states have (on average 1.5940594059405941) internal successors, (161), 145 states have internal predecessors, (161), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (39), 35 states have call predecessors, (39), 35 states have call successors, (39) [2023-11-29 04:12:27,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 235 transitions. [2023-11-29 04:12:27,720 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 235 transitions. Word has length 19 [2023-11-29 04:12:27,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:12:27,720 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 235 transitions. [2023-11-29 04:12:27,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 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 04:12:27,720 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 235 transitions. [2023-11-29 04:12:27,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-29 04:12:27,721 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:12:27,721 INFO L195 NwaCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:12:27,725 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-11-29 04:12:27,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:12:27,922 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-11-29 04:12:27,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:12:27,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1519946273, now seen corresponding path program 2 times [2023-11-29 04:12:27,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:12:27,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1602568880] [2023-11-29 04:12:27,923 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:12:27,923 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:12:27,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:12:27,924 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:12:27,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-29 04:12:28,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 04:12:28,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:12:28,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 04:12:28,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:12:28,178 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-29 04:12:28,178 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:12:28,178 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:12:28,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1602568880] [2023-11-29 04:12:28,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1602568880] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:12:28,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:12:28,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:12:28,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770113423] [2023-11-29 04:12:28,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:12:28,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:12:28,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:12:28,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:12:28,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:12:28,179 INFO L87 Difference]: Start difference. First operand 188 states and 235 transitions. Second operand has 7 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 04:12:28,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:12:28,799 INFO L93 Difference]: Finished difference Result 186 states and 233 transitions. [2023-11-29 04:12:28,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:12:28,799 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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 23 [2023-11-29 04:12:28,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:12:28,801 INFO L225 Difference]: With dead ends: 186 [2023-11-29 04:12:28,801 INFO L226 Difference]: Without dead ends: 186 [2023-11-29 04:12:28,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:12:28,801 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 9 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:12:28,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 806 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 04:12:28,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2023-11-29 04:12:28,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2023-11-29 04:12:28,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 101 states have (on average 1.5742574257425743) internal successors, (159), 143 states have internal predecessors, (159), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (39), 35 states have call predecessors, (39), 35 states have call successors, (39) [2023-11-29 04:12:28,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 233 transitions. [2023-11-29 04:12:28,809 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 233 transitions. Word has length 23 [2023-11-29 04:12:28,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:12:28,810 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 233 transitions. [2023-11-29 04:12:28,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 04:12:28,810 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 233 transitions. [2023-11-29 04:12:28,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-29 04:12:28,811 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:12:28,811 INFO L195 NwaCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:12:28,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 04:12:29,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:12:29,011 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-11-29 04:12:29,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:12:29,012 INFO L85 PathProgramCache]: Analyzing trace with hash 126305949, now seen corresponding path program 1 times [2023-11-29 04:12:29,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:12:29,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1868039074] [2023-11-29 04:12:29,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:29,012 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:12:29,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:12:29,013 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:12:29,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-29 04:12:29,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:12:29,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 04:12:29,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:12:29,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 04:12:29,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 04:12:29,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 17 [2023-11-29 04:12:29,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 17 [2023-11-29 04:12:29,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 04:12:29,439 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-29 04:12:29,439 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:12:29,439 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:12:29,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1868039074] [2023-11-29 04:12:29,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1868039074] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:12:29,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:12:29,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 04:12:29,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738626689] [2023-11-29 04:12:29,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:12:29,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 04:12:29,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:12:29,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 04:12:29,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:12:29,441 INFO L87 Difference]: Start difference. First operand 186 states and 233 transitions. Second operand has 8 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 04:12:30,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:12:30,752 INFO L93 Difference]: Finished difference Result 188 states and 235 transitions. [2023-11-29 04:12:30,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 04:12:30,753 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2023-11-29 04:12:30,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:12:30,754 INFO L225 Difference]: With dead ends: 188 [2023-11-29 04:12:30,754 INFO L226 Difference]: Without dead ends: 188 [2023-11-29 04:12:30,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 04:12:30,755 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 5 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:12:30,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 914 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 04:12:30,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-11-29 04:12:30,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2023-11-29 04:12:30,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 103 states have (on average 1.5533980582524272) internal successors, (160), 145 states have internal predecessors, (160), 35 states have call successors, (35), 10 states have call predecessors, (35), 11 states have return successors, (40), 35 states have call predecessors, (40), 35 states have call successors, (40) [2023-11-29 04:12:30,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 235 transitions. [2023-11-29 04:12:30,762 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 235 transitions. Word has length 24 [2023-11-29 04:12:30,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:12:30,762 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 235 transitions. [2023-11-29 04:12:30,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 04:12:30,763 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 235 transitions. [2023-11-29 04:12:30,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-29 04:12:30,763 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:12:30,763 INFO L195 NwaCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:12:30,769 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-11-29 04:12:30,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:12:30,964 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-11-29 04:12:30,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:12:30,965 INFO L85 PathProgramCache]: Analyzing trace with hash 126305950, now seen corresponding path program 1 times [2023-11-29 04:12:30,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:12:30,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [591411140] [2023-11-29 04:12:30,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:30,965 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:12:30,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:12:30,966 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:12:30,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-29 04:12:31,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:12:31,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 04:12:31,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:12:31,208 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 10 treesize of output 9 [2023-11-29 04:12:31,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 04:12:31,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 04:12:31,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 13 [2023-11-29 04:12:31,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 19 [2023-11-29 04:12:31,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 19 [2023-11-29 04:12:31,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 13 [2023-11-29 04:12:31,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-11-29 04:12:31,632 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-29 04:12:31,633 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:12:31,633 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:12:31,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [591411140] [2023-11-29 04:12:31,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [591411140] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:12:31,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:12:31,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 04:12:31,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872595190] [2023-11-29 04:12:31,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:12:31,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:12:31,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:12:31,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:12:31,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:12:31,634 INFO L87 Difference]: Start difference. First operand 188 states and 235 transitions. Second operand has 9 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 04:12:33,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 04:12:34,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:12:34,443 INFO L93 Difference]: Finished difference Result 187 states and 234 transitions. [2023-11-29 04:12:34,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:12:34,444 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2023-11-29 04:12:34,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:12:34,445 INFO L225 Difference]: With dead ends: 187 [2023-11-29 04:12:34,445 INFO L226 Difference]: Without dead ends: 187 [2023-11-29 04:12:34,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-11-29 04:12:34,445 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 16 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-29 04:12:34,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 1007 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-29 04:12:34,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2023-11-29 04:12:34,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2023-11-29 04:12:34,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 103 states have (on average 1.5436893203883495) internal successors, (159), 144 states have internal predecessors, (159), 35 states have call successors, (35), 10 states have call predecessors, (35), 11 states have return successors, (40), 35 states have call predecessors, (40), 35 states have call successors, (40) [2023-11-29 04:12:34,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 234 transitions. [2023-11-29 04:12:34,451 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 234 transitions. Word has length 24 [2023-11-29 04:12:34,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:12:34,452 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 234 transitions. [2023-11-29 04:12:34,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 04:12:34,452 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 234 transitions. [2023-11-29 04:12:34,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-29 04:12:34,453 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:12:34,453 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:12:34,459 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-11-29 04:12:34,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:12:34,653 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting DUPFFnewErr7ASSERT_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-11-29 04:12:34,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:12:34,654 INFO L85 PathProgramCache]: Analyzing trace with hash -741180313, now seen corresponding path program 1 times [2023-11-29 04:12:34,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:12:34,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [895567017] [2023-11-29 04:12:34,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:34,659 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:12:34,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:12:34,660 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:12:34,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-29 04:12:34,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:12:34,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 04:12:34,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:12:34,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 04:12:34,910 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 13 treesize of output 9 [2023-11-29 04:12:34,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 04:12:34,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-11-29 04:12:34,985 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-29 04:12:34,985 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:12:34,985 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:12:34,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [895567017] [2023-11-29 04:12:34,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [895567017] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:12:34,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:12:34,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:12:34,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494963656] [2023-11-29 04:12:34,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:12:34,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:12:34,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:12:34,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:12:34,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:12:34,987 INFO L87 Difference]: Start difference. First operand 187 states and 234 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 04:12:35,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:12:35,853 INFO L93 Difference]: Finished difference Result 190 states and 233 transitions. [2023-11-29 04:12:35,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:12:35,853 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2023-11-29 04:12:35,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:12:35,854 INFO L225 Difference]: With dead ends: 190 [2023-11-29 04:12:35,855 INFO L226 Difference]: Without dead ends: 187 [2023-11-29 04:12:35,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-11-29 04:12:35,855 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 18 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 04:12:35,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 746 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 04:12:35,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2023-11-29 04:12:35,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 184. [2023-11-29 04:12:35,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 101 states have (on average 1.4851485148514851) internal successors, (150), 141 states have internal predecessors, (150), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-29 04:12:35,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 220 transitions. [2023-11-29 04:12:35,861 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 220 transitions. Word has length 33 [2023-11-29 04:12:35,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:12:35,861 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 220 transitions. [2023-11-29 04:12:35,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 04:12:35,861 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 220 transitions. [2023-11-29 04:12:35,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-29 04:12:35,862 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:12:35,862 INFO L195 NwaCegarLoop]: trace histogram [13, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:12:35,866 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 04:12:36,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:12:36,063 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-11-29 04:12:36,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:12:36,063 INFO L85 PathProgramCache]: Analyzing trace with hash 414938964, now seen corresponding path program 1 times [2023-11-29 04:12:36,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:12:36,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [29925412] [2023-11-29 04:12:36,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:36,064 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:12:36,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:12:36,065 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:12:36,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-29 04:12:36,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:12:36,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 04:12:36,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:12:36,618 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 63 proven. 15 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-29 04:12:36,618 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:12:37,077 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 63 proven. 15 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-29 04:12:37,077 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:12:37,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [29925412] [2023-11-29 04:12:37,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [29925412] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:12:37,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:12:37,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2023-11-29 04:12:37,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444940182] [2023-11-29 04:12:37,078 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:12:37,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 04:12:37,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:12:37,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 04:12:37,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2023-11-29 04:12:37,079 INFO L87 Difference]: Start difference. First operand 184 states and 220 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 20 states have internal predecessors, (48), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-29 04:12:39,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:12:39,012 INFO L93 Difference]: Finished difference Result 215 states and 274 transitions. [2023-11-29 04:12:39,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 04:12:39,012 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 20 states have internal predecessors, (48), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2023-11-29 04:12:39,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:12:39,014 INFO L225 Difference]: With dead ends: 215 [2023-11-29 04:12:39,014 INFO L226 Difference]: Without dead ends: 209 [2023-11-29 04:12:39,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=499, Invalid=1223, Unknown=0, NotChecked=0, Total=1722 [2023-11-29 04:12:39,015 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 93 mSDsluCounter, 1349 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 1504 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:12:39,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 1504 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 04:12:39,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-11-29 04:12:39,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 191. [2023-11-29 04:12:39,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 108 states have (on average 1.4537037037037037) internal successors, (157), 148 states have internal predecessors, (157), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-29 04:12:39,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 227 transitions. [2023-11-29 04:12:39,023 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 227 transitions. Word has length 44 [2023-11-29 04:12:39,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:12:39,024 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 227 transitions. [2023-11-29 04:12:39,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 20 states have internal predecessors, (48), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-29 04:12:39,024 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 227 transitions. [2023-11-29 04:12:39,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-29 04:12:39,025 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:12:39,025 INFO L195 NwaCegarLoop]: trace histogram [20, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:12:39,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 04:12:39,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:12:39,226 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-11-29 04:12:39,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:12:39,226 INFO L85 PathProgramCache]: Analyzing trace with hash 358888326, now seen corresponding path program 2 times [2023-11-29 04:12:39,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:12:39,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [421161880] [2023-11-29 04:12:39,227 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:12:39,227 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:12:39,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:12:39,228 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:12:39,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-29 04:12:39,377 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 04:12:39,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:12:39,381 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:12:39,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:12:39,439 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2023-11-29 04:12:39,439 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:12:39,440 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:12:39,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [421161880] [2023-11-29 04:12:39,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [421161880] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:12:39,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:12:39,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:12:39,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798360047] [2023-11-29 04:12:39,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:12:39,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:12:39,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:12:39,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:12:39,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:12:39,441 INFO L87 Difference]: Start difference. First operand 191 states and 227 transitions. Second operand has 6 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 04:12:39,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:12:39,958 INFO L93 Difference]: Finished difference Result 189 states and 225 transitions. [2023-11-29 04:12:39,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:12:39,958 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 51 [2023-11-29 04:12:39,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:12:39,960 INFO L225 Difference]: With dead ends: 189 [2023-11-29 04:12:39,960 INFO L226 Difference]: Without dead ends: 189 [2023-11-29 04:12:39,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:12:39,961 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 11 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 04:12:39,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 622 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 04:12:39,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-11-29 04:12:39,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2023-11-29 04:12:39,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 108 states have (on average 1.4351851851851851) internal successors, (155), 146 states have internal predecessors, (155), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-29 04:12:39,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 225 transitions. [2023-11-29 04:12:39,967 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 225 transitions. Word has length 51 [2023-11-29 04:12:39,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:12:39,967 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 225 transitions. [2023-11-29 04:12:39,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 04:12:39,968 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 225 transitions. [2023-11-29 04:12:39,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-29 04:12:39,968 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:12:39,969 INFO L195 NwaCegarLoop]: trace histogram [20, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:12:39,972 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2023-11-29 04:12:40,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:12:40,169 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-11-29 04:12:40,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:12:40,170 INFO L85 PathProgramCache]: Analyzing trace with hash 358888327, now seen corresponding path program 1 times [2023-11-29 04:12:40,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:12:40,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [129440927] [2023-11-29 04:12:40,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:40,170 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:12:40,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:12:40,171 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:12:40,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-11-29 04:12:40,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:12:40,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 04:12:40,606 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:12:40,734 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2023-11-29 04:12:40,734 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:12:40,734 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:12:40,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [129440927] [2023-11-29 04:12:40,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [129440927] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:12:40,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:12:40,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:12:40,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751539937] [2023-11-29 04:12:40,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:12:40,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:12:40,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:12:40,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:12:40,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:12:40,736 INFO L87 Difference]: Start difference. First operand 189 states and 225 transitions. Second operand has 7 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 04:12:41,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:12:41,376 INFO L93 Difference]: Finished difference Result 187 states and 223 transitions. [2023-11-29 04:12:41,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:12:41,377 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 51 [2023-11-29 04:12:41,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:12:41,379 INFO L225 Difference]: With dead ends: 187 [2023-11-29 04:12:41,379 INFO L226 Difference]: Without dead ends: 187 [2023-11-29 04:12:41,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:12:41,379 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 12 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:12:41,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 664 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 04:12:41,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2023-11-29 04:12:41,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2023-11-29 04:12:41,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 108 states have (on average 1.4166666666666667) internal successors, (153), 144 states have internal predecessors, (153), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-29 04:12:41,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 223 transitions. [2023-11-29 04:12:41,386 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 223 transitions. Word has length 51 [2023-11-29 04:12:41,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:12:41,387 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 223 transitions. [2023-11-29 04:12:41,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 04:12:41,387 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 223 transitions. [2023-11-29 04:12:41,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-29 04:12:41,388 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:12:41,388 INFO L195 NwaCegarLoop]: trace histogram [20, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:12:41,396 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-11-29 04:12:41,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:12:41,591 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-11-29 04:12:41,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:12:41,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1759363583, now seen corresponding path program 1 times [2023-11-29 04:12:41,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:12:41,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2006943290] [2023-11-29 04:12:41,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:41,593 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:12:41,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:12:41,594 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:12:41,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-29 04:12:42,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:12:42,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 04:12:42,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:12:42,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 04:12:42,283 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 15 treesize of output 1 [2023-11-29 04:12:42,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 15 [2023-11-29 04:12:42,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 15 [2023-11-29 04:12:42,443 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 19 treesize of output 11 [2023-11-29 04:12:42,457 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2023-11-29 04:12:42,457 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:12:42,457 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:12:42,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2006943290] [2023-11-29 04:12:42,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2006943290] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:12:42,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:12:42,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 04:12:42,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851319847] [2023-11-29 04:12:42,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:12:42,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:12:42,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:12:42,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:12:42,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:12:42,459 INFO L87 Difference]: Start difference. First operand 187 states and 223 transitions. Second operand has 9 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 04:12:43,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:12:43,157 INFO L93 Difference]: Finished difference Result 189 states and 228 transitions. [2023-11-29 04:12:43,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:12:43,158 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 52 [2023-11-29 04:12:43,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:12:43,159 INFO L225 Difference]: With dead ends: 189 [2023-11-29 04:12:43,159 INFO L226 Difference]: Without dead ends: 189 [2023-11-29 04:12:43,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 04:12:43,160 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 10 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 04:12:43,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 800 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 04:12:43,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-11-29 04:12:43,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 186. [2023-11-29 04:12:43,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 108 states have (on average 1.4074074074074074) internal successors, (152), 143 states have internal predecessors, (152), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-29 04:12:43,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 222 transitions. [2023-11-29 04:12:43,166 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 222 transitions. Word has length 52 [2023-11-29 04:12:43,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:12:43,166 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 222 transitions. [2023-11-29 04:12:43,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 04:12:43,166 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 222 transitions. [2023-11-29 04:12:43,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-29 04:12:43,167 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:12:43,167 INFO L195 NwaCegarLoop]: trace histogram [20, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:12:43,177 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2023-11-29 04:12:43,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:12:43,368 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-11-29 04:12:43,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:12:43,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1759363582, now seen corresponding path program 1 times [2023-11-29 04:12:43,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:12:43,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1478914434] [2023-11-29 04:12:43,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:43,369 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:12:43,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:12:43,370 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:12:43,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-11-29 04:12:44,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:12:44,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-29 04:12:44,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:12:44,080 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 10 treesize of output 9 [2023-11-29 04:12:44,113 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 04:12:44,122 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 15 treesize of output 1 [2023-11-29 04:12:44,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 17 [2023-11-29 04:12:44,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 11 [2023-11-29 04:12:44,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 11 [2023-11-29 04:12:44,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 17 [2023-11-29 04:12:44,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-29 04:12:44,498 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2023-11-29 04:12:44,498 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:12:44,499 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:12:44,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1478914434] [2023-11-29 04:12:44,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1478914434] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:12:44,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:12:44,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 04:12:44,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898302119] [2023-11-29 04:12:44,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:12:44,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:12:44,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:12:44,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:12:44,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:12:44,500 INFO L87 Difference]: Start difference. First operand 186 states and 222 transitions. Second operand has 9 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 04:12:45,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:12:45,799 INFO L93 Difference]: Finished difference Result 188 states and 227 transitions. [2023-11-29 04:12:45,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:12:45,800 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 52 [2023-11-29 04:12:45,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:12:45,801 INFO L225 Difference]: With dead ends: 188 [2023-11-29 04:12:45,801 INFO L226 Difference]: Without dead ends: 188 [2023-11-29 04:12:45,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-11-29 04:12:45,801 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 16 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:12:45,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 972 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 04:12:45,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-11-29 04:12:45,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 185. [2023-11-29 04:12:45,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 108 states have (on average 1.3981481481481481) internal successors, (151), 142 states have internal predecessors, (151), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-29 04:12:45,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 221 transitions. [2023-11-29 04:12:45,809 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 221 transitions. Word has length 52 [2023-11-29 04:12:45,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:12:45,810 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 221 transitions. [2023-11-29 04:12:45,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 04:12:45,810 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 221 transitions. [2023-11-29 04:12:45,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-29 04:12:45,810 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:12:45,810 INFO L195 NwaCegarLoop]: trace histogram [20, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:12:45,821 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 04:12:46,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:12:46,011 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-11-29 04:12:46,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:12:46,011 INFO L85 PathProgramCache]: Analyzing trace with hash -545470244, now seen corresponding path program 1 times [2023-11-29 04:12:46,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:12:46,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1473892718] [2023-11-29 04:12:46,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:46,012 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:12:46,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:12:46,013 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:12:46,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-11-29 04:12:46,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:12:46,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 04:12:46,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:12:46,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 04:12:46,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 04:12:46,871 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 15 treesize of output 9 [2023-11-29 04:12:46,877 WARN L876 $PredicateComparison]: unable to prove that (exists ((v_arrayElimCell_23 (_ BitVec 32)) (|DUPFFnew_~ans~0#1.base| (_ BitVec 32))) (= (store (store |c_old(#valid)| |DUPFFnew_~ans~0#1.base| (_ bv1 1)) v_arrayElimCell_23 (_ bv1 1)) |c_#valid|)) is different from true [2023-11-29 04:12:46,959 INFO L349 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2023-11-29 04:12:46,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 27 [2023-11-29 04:12:47,070 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 122 not checked. [2023-11-29 04:12:47,070 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:12:47,684 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 4 proven. 123 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2023-11-29 04:12:47,684 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:12:47,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1473892718] [2023-11-29 04:12:47,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1473892718] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:12:47,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:12:47,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 17 [2023-11-29 04:12:47,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068206507] [2023-11-29 04:12:47,685 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:12:47,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 04:12:47,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:12:47,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 04:12:47,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=227, Unknown=1, NotChecked=30, Total=306 [2023-11-29 04:12:47,687 INFO L87 Difference]: Start difference. First operand 185 states and 221 transitions. Second operand has 18 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 3 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 04:12:54,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:12:58,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:13:02,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:13:06,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 04:13:10,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 04:13:14,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 04:13:18,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 04:13:22,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:13:26,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:13:30,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:13:34,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 04:13:38,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 04:13:42,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 04:13:46,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:13:50,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 04:13:54,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 04:13:58,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 04:14:02,909 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 04:14:06,912 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 04:14:10,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 04:14:14,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 04:14:19,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 04:14:23,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 04:14:27,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:14:31,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:14:35,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 04:14:40,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 04:14:40,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:14:40,482 INFO L93 Difference]: Finished difference Result 302 states and 386 transitions. [2023-11-29 04:14:40,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 04:14:40,483 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 3 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 58 [2023-11-29 04:14:40,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:14:40,485 INFO L225 Difference]: With dead ends: 302 [2023-11-29 04:14:40,486 INFO L226 Difference]: Without dead ends: 302 [2023-11-29 04:14:40,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 96 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=150, Invalid=665, Unknown=1, NotChecked=54, Total=870 [2023-11-29 04:14:40,487 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 537 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 1317 mSolverCounterSat, 435 mSolverCounterUnsat, 27 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 112.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 2116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 435 IncrementalHoareTripleChecker+Valid, 1317 IncrementalHoareTripleChecker+Invalid, 27 IncrementalHoareTripleChecker+Unknown, 337 IncrementalHoareTripleChecker+Unchecked, 112.5s IncrementalHoareTripleChecker+Time [2023-11-29 04:14:40,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [541 Valid, 530 Invalid, 2116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [435 Valid, 1317 Invalid, 27 Unknown, 337 Unchecked, 112.5s Time] [2023-11-29 04:14:40,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2023-11-29 04:14:40,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 261. [2023-11-29 04:14:40,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 150 states have (on average 1.5266666666666666) internal successors, (229), 187 states have internal predecessors, (229), 67 states have call successors, (67), 12 states have call predecessors, (67), 12 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2023-11-29 04:14:40,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 363 transitions. [2023-11-29 04:14:40,498 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 363 transitions. Word has length 58 [2023-11-29 04:14:40,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:14:40,498 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 363 transitions. [2023-11-29 04:14:40,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 3 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 04:14:40,498 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 363 transitions. [2023-11-29 04:14:40,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-29 04:14:40,499 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:14:40,499 INFO L195 NwaCegarLoop]: trace histogram [20, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:14:40,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 04:14:40,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:14:40,700 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-11-29 04:14:40,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:14:40,700 INFO L85 PathProgramCache]: Analyzing trace with hash -545470243, now seen corresponding path program 1 times [2023-11-29 04:14:40,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:14:40,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1945539538] [2023-11-29 04:14:40,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:14:40,701 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:14:40,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:14:40,702 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:14:40,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-11-29 04:14:41,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:41,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-29 04:14:41,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:14:41,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 04:14:41,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 04:14:41,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:14:41,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-29 04:14:41,501 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 04:14:41,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-29 04:14:41,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 04:14:41,875 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 15 [2023-11-29 04:14:41,887 WARN L876 $PredicateComparison]: unable to prove that (exists ((|DUPFFnew_~ans~0#1.base| (_ BitVec 32)) (v_arrayElimCell_28 (_ BitVec 32))) (and (= |c_#length| (store (store |c_old(#length)| |DUPFFnew_~ans~0#1.base| (select |c_#length| |DUPFFnew_~ans~0#1.base|)) v_arrayElimCell_28 (bvadd (_ bv4 32) (bvmul |c_DUPFFnew_#in~maxdeg#1| (_ bv4 32))))) (= (_ bv0 1) (select |c_old(#valid)| |DUPFFnew_~ans~0#1.base|)))) is different from true [2023-11-29 04:14:42,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:14:42,076 INFO L349 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2023-11-29 04:14:42,076 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 2 case distinctions, treesize of input 17 treesize of output 14 [2023-11-29 04:14:42,087 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 04:14:42,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-29 04:14:42,384 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 114 trivial. 122 not checked. [2023-11-29 04:14:42,385 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:14:47,633 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:14:47,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1945539538] [2023-11-29 04:14:47,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1945539538] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:14:47,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [10402290] [2023-11-29 04:14:47,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:14:47,634 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 04:14:47,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 04:14:47,635 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 04:14:47,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2023-11-29 04:14:50,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:50,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-29 04:14:50,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:14:50,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 04:14:50,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 04:14:50,348 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-29 04:14:50,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2023-11-29 04:14:50,361 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 04:14:50,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-29 04:14:50,433 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 04:14:50,436 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 8 treesize of output 4 [2023-11-29 04:14:50,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 04:14:50,945 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 40 treesize of output 22 [2023-11-29 04:14:50,960 WARN L876 $PredicateComparison]: unable to prove that (exists ((v_arrayElimCell_36 (_ BitVec 32)) (|DUPFFnew_~ans~0#1.base| (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 1))) (and (= (store (store |c_old(#length)| |DUPFFnew_~ans~0#1.base| (select |c_#length| |DUPFFnew_~ans~0#1.base|)) v_arrayElimCell_36 (select |c_#length| v_arrayElimCell_36)) |c_#length|) (= (select (store |c_old(#valid)| |DUPFFnew_~ans~0#1.base| v_DerPreprocessor_3) v_arrayElimCell_36) (_ bv0 1)) (= (_ bv0 1) (select |c_old(#valid)| |DUPFFnew_~ans~0#1.base|)))) is different from true [2023-11-29 04:14:51,225 INFO L349 Elim1Store]: treesize reduction 17, result has 45.2 percent of original size [2023-11-29 04:14:51,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 38 [2023-11-29 04:14:51,237 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-29 04:14:51,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 9 [2023-11-29 04:14:51,612 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 114 trivial. 122 not checked. [2023-11-29 04:14:51,612 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:14:53,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [10402290] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:14:53,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:14:53,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 26 [2023-11-29 04:14:53,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217538941] [2023-11-29 04:14:53,059 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:14:53,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-29 04:14:53,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:14:53,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-29 04:14:53,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=904, Unknown=3, NotChecked=122, Total=1122 [2023-11-29 04:14:53,061 INFO L87 Difference]: Start difference. First operand 261 states and 363 transitions. Second operand has 27 states, 23 states have (on average 2.391304347826087) internal successors, (55), 21 states have internal predecessors, (55), 6 states have call successors, (6), 6 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 04:15:02,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:15:02,768 INFO L93 Difference]: Finished difference Result 349 states and 482 transitions. [2023-11-29 04:15:02,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 04:15:02,769 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 2.391304347826087) internal successors, (55), 21 states have internal predecessors, (55), 6 states have call successors, (6), 6 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 58 [2023-11-29 04:15:02,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:15:02,771 INFO L225 Difference]: With dead ends: 349 [2023-11-29 04:15:02,771 INFO L226 Difference]: Without dead ends: 349 [2023-11-29 04:15:02,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 2 IntricatePredicates, 5 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=169, Invalid=1558, Unknown=3, NotChecked=162, Total=1892 [2023-11-29 04:15:02,772 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 241 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 2736 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 3537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 2736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 662 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:15:02,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 1025 Invalid, 3537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 2736 Invalid, 0 Unknown, 662 Unchecked, 8.3s Time] [2023-11-29 04:15:02,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2023-11-29 04:15:02,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 264. [2023-11-29 04:15:02,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 152 states have (on average 1.513157894736842) internal successors, (230), 189 states have internal predecessors, (230), 67 states have call successors, (67), 13 states have call predecessors, (67), 13 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2023-11-29 04:15:02,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 364 transitions. [2023-11-29 04:15:02,782 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 364 transitions. Word has length 58 [2023-11-29 04:15:02,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:15:02,783 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 364 transitions. [2023-11-29 04:15:02,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 2.391304347826087) internal successors, (55), 21 states have internal predecessors, (55), 6 states have call successors, (6), 6 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 04:15:02,783 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 364 transitions. [2023-11-29 04:15:02,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-29 04:15:02,783 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:15:02,784 INFO L195 NwaCegarLoop]: trace histogram [20, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:15:02,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2023-11-29 04:15:02,992 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2023-11-29 04:15:03,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:15:03,184 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-11-29 04:15:03,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:15:03,185 INFO L85 PathProgramCache]: Analyzing trace with hash -509431304, now seen corresponding path program 1 times [2023-11-29 04:15:03,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:15:03,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [814168240] [2023-11-29 04:15:03,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:15:03,186 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:15:03,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:15:03,186 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:15:03,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-11-29 04:15:03,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:03,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 04:15:03,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:15:03,837 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2023-11-29 04:15:03,837 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:15:03,837 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:15:03,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [814168240] [2023-11-29 04:15:03,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [814168240] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:15:03,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:15:03,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 04:15:03,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503723174] [2023-11-29 04:15:03,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:15:03,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 04:15:03,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:15:03,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 04:15:03,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-29 04:15:03,839 INFO L87 Difference]: Start difference. First operand 264 states and 364 transitions. Second operand has 11 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 04:15:05,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:15:05,520 INFO L93 Difference]: Finished difference Result 273 states and 370 transitions. [2023-11-29 04:15:05,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 04:15:05,521 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 62 [2023-11-29 04:15:05,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:15:05,522 INFO L225 Difference]: With dead ends: 273 [2023-11-29 04:15:05,522 INFO L226 Difference]: Without dead ends: 273 [2023-11-29 04:15:05,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-11-29 04:15:05,523 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 218 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:15:05,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 526 Invalid, 1110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1068 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 04:15:05,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-11-29 04:15:05,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 267. [2023-11-29 04:15:05,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 154 states have (on average 1.5129870129870129) internal successors, (233), 191 states have internal predecessors, (233), 67 states have call successors, (67), 14 states have call predecessors, (67), 14 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2023-11-29 04:15:05,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 367 transitions. [2023-11-29 04:15:05,531 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 367 transitions. Word has length 62 [2023-11-29 04:15:05,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:15:05,531 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 367 transitions. [2023-11-29 04:15:05,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 04:15:05,531 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 367 transitions. [2023-11-29 04:15:05,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-29 04:15:05,531 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:15:05,532 INFO L195 NwaCegarLoop]: trace histogram [20, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:15:05,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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)] Forceful destruction successful, exit code 0 [2023-11-29 04:15:05,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:15:05,732 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-11-29 04:15:05,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:15:05,732 INFO L85 PathProgramCache]: Analyzing trace with hash -509431303, now seen corresponding path program 1 times [2023-11-29 04:15:05,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:15:05,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [383192964] [2023-11-29 04:15:05,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:15:05,733 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:15:05,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:15:05,734 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:15:05,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-11-29 04:15:06,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:06,243 INFO L262 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 04:15:06,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:15:06,520 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2023-11-29 04:15:06,520 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:15:06,520 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:15:06,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [383192964] [2023-11-29 04:15:06,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [383192964] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:15:06,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:15:06,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 04:15:06,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298164262] [2023-11-29 04:15:06,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:15:06,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 04:15:06,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:15:06,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 04:15:06,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:15:06,522 INFO L87 Difference]: Start difference. First operand 267 states and 367 transitions. Second operand has 12 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 04:15:09,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:15:09,532 INFO L93 Difference]: Finished difference Result 274 states and 370 transitions. [2023-11-29 04:15:09,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 04:15:09,535 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 62 [2023-11-29 04:15:09,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:15:09,537 INFO L225 Difference]: With dead ends: 274 [2023-11-29 04:15:09,537 INFO L226 Difference]: Without dead ends: 274 [2023-11-29 04:15:09,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2023-11-29 04:15:09,538 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 207 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 1145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-29 04:15:09,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 662 Invalid, 1145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-29 04:15:09,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2023-11-29 04:15:09,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 267. [2023-11-29 04:15:09,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 154 states have (on average 1.5064935064935066) internal successors, (232), 191 states have internal predecessors, (232), 67 states have call successors, (67), 14 states have call predecessors, (67), 14 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2023-11-29 04:15:09,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 366 transitions. [2023-11-29 04:15:09,547 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 366 transitions. Word has length 62 [2023-11-29 04:15:09,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:15:09,547 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 366 transitions. [2023-11-29 04:15:09,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 04:15:09,547 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 366 transitions. [2023-11-29 04:15:09,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-29 04:15:09,548 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:15:09,548 INFO L195 NwaCegarLoop]: trace histogram [20, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:15:09,555 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2023-11-29 04:15:09,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:15:09,749 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-11-29 04:15:09,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:15:09,749 INFO L85 PathProgramCache]: Analyzing trace with hash 720089871, now seen corresponding path program 1 times [2023-11-29 04:15:09,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:15:09,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [618156750] [2023-11-29 04:15:09,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:15:09,750 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:15:09,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:15:09,750 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:15:09,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-11-29 04:15:10,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:10,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 04:15:10,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:15:10,532 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-11-29 04:15:10,532 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:15:10,616 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-11-29 04:15:10,616 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:15:10,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [618156750] [2023-11-29 04:15:10,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [618156750] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:15:10,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:15:10,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 12 [2023-11-29 04:15:10,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888996193] [2023-11-29 04:15:10,616 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:15:10,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 04:15:10,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:15:10,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 04:15:10,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-11-29 04:15:10,618 INFO L87 Difference]: Start difference. First operand 267 states and 366 transitions. Second operand has 13 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-29 04:15:12,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:15:12,877 INFO L93 Difference]: Finished difference Result 318 states and 432 transitions. [2023-11-29 04:15:12,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 04:15:12,878 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 69 [2023-11-29 04:15:12,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:15:12,879 INFO L225 Difference]: With dead ends: 318 [2023-11-29 04:15:12,880 INFO L226 Difference]: Without dead ends: 318 [2023-11-29 04:15:12,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 123 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2023-11-29 04:15:12,880 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 228 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 1546 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 1616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:15:12,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 752 Invalid, 1616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1546 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-29 04:15:12,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2023-11-29 04:15:12,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 301. [2023-11-29 04:15:12,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 175 states have (on average 1.4914285714285713) internal successors, (261), 215 states have internal predecessors, (261), 74 states have call successors, (74), 17 states have call predecessors, (74), 20 states have return successors, (80), 74 states have call predecessors, (80), 74 states have call successors, (80) [2023-11-29 04:15:12,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 415 transitions. [2023-11-29 04:15:12,888 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 415 transitions. Word has length 69 [2023-11-29 04:15:12,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:15:12,888 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 415 transitions. [2023-11-29 04:15:12,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-29 04:15:12,888 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 415 transitions. [2023-11-29 04:15:12,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-29 04:15:12,889 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:15:12,889 INFO L195 NwaCegarLoop]: trace histogram [20, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:15:12,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2023-11-29 04:15:13,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:15:13,089 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-11-29 04:15:13,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:15:13,090 INFO L85 PathProgramCache]: Analyzing trace with hash 720089872, now seen corresponding path program 1 times [2023-11-29 04:15:13,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:15:13,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1916265053] [2023-11-29 04:15:13,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:15:13,091 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:15:13,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:15:13,092 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:15:13,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-11-29 04:15:13,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:13,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 04:15:13,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:15:14,072 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 130 proven. 2 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2023-11-29 04:15:14,072 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:15:15,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2023-11-29 04:15:15,259 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 130 proven. 2 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2023-11-29 04:15:15,259 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:15:15,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1916265053] [2023-11-29 04:15:15,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1916265053] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:15:15,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:15:15,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 24 [2023-11-29 04:15:15,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8498014] [2023-11-29 04:15:15,260 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:15:15,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-29 04:15:15,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:15:15,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-29 04:15:15,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2023-11-29 04:15:15,261 INFO L87 Difference]: Start difference. First operand 301 states and 415 transitions. Second operand has 25 states, 20 states have (on average 3.0) internal successors, (60), 17 states have internal predecessors, (60), 7 states have call successors, (12), 8 states have call predecessors, (12), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-29 04:15:19,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:15:27,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:15:27,327 INFO L93 Difference]: Finished difference Result 321 states and 433 transitions. [2023-11-29 04:15:27,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 04:15:27,328 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 20 states have (on average 3.0) internal successors, (60), 17 states have internal predecessors, (60), 7 states have call successors, (12), 8 states have call predecessors, (12), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 69 [2023-11-29 04:15:27,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:15:27,330 INFO L225 Difference]: With dead ends: 321 [2023-11-29 04:15:27,330 INFO L226 Difference]: Without dead ends: 321 [2023-11-29 04:15:27,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 110 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=106, Invalid=764, Unknown=0, NotChecked=0, Total=870 [2023-11-29 04:15:27,331 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 302 mSDsluCounter, 1181 mSDsCounter, 0 mSdLazyCounter, 2447 mSolverCounterSat, 95 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 2543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2447 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2023-11-29 04:15:27,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 1326 Invalid, 2543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 2447 Invalid, 1 Unknown, 0 Unchecked, 11.7s Time] [2023-11-29 04:15:27,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2023-11-29 04:15:27,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 304. [2023-11-29 04:15:27,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 177 states have (on average 1.4745762711864407) internal successors, (261), 217 states have internal predecessors, (261), 74 states have call successors, (74), 18 states have call predecessors, (74), 21 states have return successors, (80), 74 states have call predecessors, (80), 74 states have call successors, (80) [2023-11-29 04:15:27,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 415 transitions. [2023-11-29 04:15:27,339 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 415 transitions. Word has length 69 [2023-11-29 04:15:27,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:15:27,339 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 415 transitions. [2023-11-29 04:15:27,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 20 states have (on average 3.0) internal successors, (60), 17 states have internal predecessors, (60), 7 states have call successors, (12), 8 states have call predecessors, (12), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-29 04:15:27,339 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 415 transitions. [2023-11-29 04:15:27,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-29 04:15:27,340 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:15:27,340 INFO L195 NwaCegarLoop]: trace histogram [20, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:15:27,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2023-11-29 04:15:27,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:15:27,540 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-11-29 04:15:27,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:15:27,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1436857685, now seen corresponding path program 2 times [2023-11-29 04:15:27,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:15:27,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1090300893] [2023-11-29 04:15:27,541 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:15:27,541 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:15:27,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:15:27,542 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:15:27,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-11-29 04:15:28,210 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:15:28,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:15:28,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 04:15:28,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:15:28,366 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2023-11-29 04:15:28,367 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:15:28,427 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2023-11-29 04:15:28,428 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 16 treesize of output 15 [2023-11-29 04:15:28,437 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2023-11-29 04:15:28,437 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:15:28,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1090300893] [2023-11-29 04:15:28,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1090300893] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:15:28,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:15:28,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 8 [2023-11-29 04:15:28,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412568181] [2023-11-29 04:15:28,438 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:15:28,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:15:28,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:15:28,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:15:28,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:15:28,439 INFO L87 Difference]: Start difference. First operand 304 states and 415 transitions. Second operand has 9 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-29 04:15:30,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:15:30,172 INFO L93 Difference]: Finished difference Result 319 states and 428 transitions. [2023-11-29 04:15:30,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 04:15:30,173 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 73 [2023-11-29 04:15:30,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:15:30,175 INFO L225 Difference]: With dead ends: 319 [2023-11-29 04:15:30,175 INFO L226 Difference]: Without dead ends: 319 [2023-11-29 04:15:30,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 136 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-11-29 04:15:30,176 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 207 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 04:15:30,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 514 Invalid, 911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 870 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 04:15:30,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2023-11-29 04:15:30,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 305. [2023-11-29 04:15:30,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 179 states have (on average 1.4692737430167597) internal successors, (263), 217 states have internal predecessors, (263), 74 states have call successors, (74), 19 states have call predecessors, (74), 21 states have return successors, (80), 74 states have call predecessors, (80), 74 states have call successors, (80) [2023-11-29 04:15:30,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 417 transitions. [2023-11-29 04:15:30,186 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 417 transitions. Word has length 73 [2023-11-29 04:15:30,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:15:30,186 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 417 transitions. [2023-11-29 04:15:30,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-29 04:15:30,187 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 417 transitions. [2023-11-29 04:15:30,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-29 04:15:30,187 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:15:30,187 INFO L195 NwaCegarLoop]: trace histogram [20, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:15:30,197 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2023-11-29 04:15:30,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:15:30,388 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-11-29 04:15:30,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:15:30,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1436857684, now seen corresponding path program 2 times [2023-11-29 04:15:30,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:15:30,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1367567043] [2023-11-29 04:15:30,389 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:15:30,389 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:15:30,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:15:30,390 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:15:30,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-11-29 04:15:31,100 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:15:31,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:15:31,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 04:15:31,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:15:31,529 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 7 proven. 134 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2023-11-29 04:15:31,529 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:15:32,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2023-11-29 04:15:32,262 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:15:32,262 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 16 treesize of output 20 [2023-11-29 04:15:33,079 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 5 proven. 134 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-11-29 04:15:33,079 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:15:33,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1367567043] [2023-11-29 04:15:33,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1367567043] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:15:33,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:15:33,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 28 [2023-11-29 04:15:33,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590820095] [2023-11-29 04:15:33,080 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:15:33,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-29 04:15:33,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:15:33,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-29 04:15:33,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=732, Unknown=0, NotChecked=0, Total=812 [2023-11-29 04:15:33,082 INFO L87 Difference]: Start difference. First operand 305 states and 417 transitions. Second operand has 29 states, 20 states have (on average 3.4) internal successors, (68), 21 states have internal predecessors, (68), 9 states have call successors, (15), 8 states have call predecessors, (15), 6 states have return successors, (10), 8 states have call predecessors, (10), 9 states have call successors, (10) [2023-11-29 04:15:45,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:15:45,054 INFO L93 Difference]: Finished difference Result 401 states and 533 transitions. [2023-11-29 04:15:45,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 04:15:45,056 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 20 states have (on average 3.4) internal successors, (68), 21 states have internal predecessors, (68), 9 states have call successors, (15), 8 states have call predecessors, (15), 6 states have return successors, (10), 8 states have call predecessors, (10), 9 states have call successors, (10) Word has length 73 [2023-11-29 04:15:45,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:15:45,058 INFO L225 Difference]: With dead ends: 401 [2023-11-29 04:15:45,058 INFO L226 Difference]: Without dead ends: 401 [2023-11-29 04:15:45,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 117 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=264, Invalid=2088, Unknown=0, NotChecked=0, Total=2352 [2023-11-29 04:15:45,059 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 705 mSDsluCounter, 1850 mSDsCounter, 0 mSdLazyCounter, 2473 mSolverCounterSat, 328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 2001 SdHoareTripleChecker+Invalid, 2801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 2473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:15:45,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 2001 Invalid, 2801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [328 Valid, 2473 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time] [2023-11-29 04:15:45,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2023-11-29 04:15:45,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 354. [2023-11-29 04:15:45,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 204 states have (on average 1.5392156862745099) internal successors, (314), 243 states have internal predecessors, (314), 99 states have call successors, (99), 20 states have call predecessors, (99), 20 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2023-11-29 04:15:45,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 512 transitions. [2023-11-29 04:15:45,072 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 512 transitions. Word has length 73 [2023-11-29 04:15:45,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:15:45,072 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 512 transitions. [2023-11-29 04:15:45,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 20 states have (on average 3.4) internal successors, (68), 21 states have internal predecessors, (68), 9 states have call successors, (15), 8 states have call predecessors, (15), 6 states have return successors, (10), 8 states have call predecessors, (10), 9 states have call successors, (10) [2023-11-29 04:15:45,073 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 512 transitions. [2023-11-29 04:15:45,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-29 04:15:45,073 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:15:45,074 INFO L195 NwaCegarLoop]: trace histogram [20, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:15:45,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Ended with exit code 0 [2023-11-29 04:15:45,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:15:45,274 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting DUPFFexgcdErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-11-29 04:15:45,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:15:45,275 INFO L85 PathProgramCache]: Analyzing trace with hash 2134319248, now seen corresponding path program 1 times [2023-11-29 04:15:45,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:15:45,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1047104587] [2023-11-29 04:15:45,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:15:45,276 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:15:45,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:15:45,276 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:15:45,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 04:15:45,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:45,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 04:15:45,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:15:45,894 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2023-11-29 04:15:45,894 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:15:45,894 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:15:45,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1047104587] [2023-11-29 04:15:45,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1047104587] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:15:45,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:15:45,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:15:45,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920710312] [2023-11-29 04:15:45,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:15:45,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:15:45,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:15:45,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:15:45,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:15:45,895 INFO L87 Difference]: Start difference. First operand 354 states and 512 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-29 04:15:46,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:15:46,042 INFO L93 Difference]: Finished difference Result 357 states and 512 transitions. [2023-11-29 04:15:46,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:15:46,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 73 [2023-11-29 04:15:46,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:15:46,045 INFO L225 Difference]: With dead ends: 357 [2023-11-29 04:15:46,045 INFO L226 Difference]: Without dead ends: 354 [2023-11-29 04:15:46,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:15:46,046 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 0 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:15:46,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 317 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:15:46,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2023-11-29 04:15:46,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 354. [2023-11-29 04:15:46,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 204 states have (on average 1.5245098039215685) internal successors, (311), 243 states have internal predecessors, (311), 99 states have call successors, (99), 20 states have call predecessors, (99), 20 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2023-11-29 04:15:46,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 509 transitions. [2023-11-29 04:15:46,058 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 509 transitions. Word has length 73 [2023-11-29 04:15:46,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:15:46,059 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 509 transitions. [2023-11-29 04:15:46,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-29 04:15:46,059 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 509 transitions. [2023-11-29 04:15:46,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-29 04:15:46,060 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:15:46,060 INFO L195 NwaCegarLoop]: trace histogram [20, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:15:46,067 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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)] Ended with exit code 0 [2023-11-29 04:15:46,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:15:46,260 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-11-29 04:15:46,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:15:46,261 INFO L85 PathProgramCache]: Analyzing trace with hash -129336580, now seen corresponding path program 3 times [2023-11-29 04:15:46,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:15:46,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2017908203] [2023-11-29 04:15:46,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 04:15:46,262 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:15:46,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:15:46,263 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:15:46,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 04:15:47,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 04:15:47,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:15:47,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 04:15:47,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:15:47,494 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2023-11-29 04:15:47,494 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:15:47,538 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2023-11-29 04:15:47,538 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 16 treesize of output 15 [2023-11-29 04:15:47,553 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2023-11-29 04:15:47,553 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:15:47,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2017908203] [2023-11-29 04:15:47,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2017908203] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:15:47,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:15:47,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2023-11-29 04:15:47,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041698285] [2023-11-29 04:15:47,554 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:15:47,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 04:15:47,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:15:47,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 04:15:47,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:15:47,555 INFO L87 Difference]: Start difference. First operand 354 states and 509 transitions. Second operand has 8 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-29 04:15:48,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:15:48,685 INFO L93 Difference]: Finished difference Result 380 states and 535 transitions. [2023-11-29 04:15:48,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 04:15:48,686 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 80 [2023-11-29 04:15:48,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:15:48,687 INFO L225 Difference]: With dead ends: 380 [2023-11-29 04:15:48,687 INFO L226 Difference]: Without dead ends: 380 [2023-11-29 04:15:48,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:15:48,688 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 75 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:15:48,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 798 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 04:15:48,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2023-11-29 04:15:48,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 356. [2023-11-29 04:15:48,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 206 states have (on average 1.5242718446601942) internal successors, (314), 244 states have internal predecessors, (314), 99 states have call successors, (99), 21 states have call predecessors, (99), 20 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2023-11-29 04:15:48,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 512 transitions. [2023-11-29 04:15:48,697 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 512 transitions. Word has length 80 [2023-11-29 04:15:48,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:15:48,697 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 512 transitions. [2023-11-29 04:15:48,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-29 04:15:48,698 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 512 transitions. [2023-11-29 04:15:48,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-29 04:15:48,698 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:15:48,698 INFO L195 NwaCegarLoop]: trace histogram [20, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:15:48,706 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 04:15:48,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:15:48,899 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-11-29 04:15:48,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:15:48,899 INFO L85 PathProgramCache]: Analyzing trace with hash -129336579, now seen corresponding path program 3 times [2023-11-29 04:15:48,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:15:48,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1503082332] [2023-11-29 04:15:48,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 04:15:48,900 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:15:48,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:15:48,901 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:15:48,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 04:15:49,964 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 04:15:49,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:15:49,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 04:15:49,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:15:50,340 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 15 proven. 134 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-11-29 04:15:50,341 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:15:50,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2023-11-29 04:15:51,085 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:15:51,086 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 16 treesize of output 20 [2023-11-29 04:15:52,126 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 15 proven. 134 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-11-29 04:15:52,126 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:15:52,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1503082332] [2023-11-29 04:15:52,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1503082332] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:15:52,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:15:52,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2023-11-29 04:15:52,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352195815] [2023-11-29 04:15:52,126 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:15:52,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-29 04:15:52,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:15:52,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-29 04:15:52,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=903, Unknown=0, NotChecked=0, Total=992 [2023-11-29 04:15:52,128 INFO L87 Difference]: Start difference. First operand 356 states and 512 transitions. Second operand has 32 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 11 states have call successors, (19), 9 states have call predecessors, (19), 5 states have return successors, (12), 10 states have call predecessors, (12), 7 states have call successors, (12) [2023-11-29 04:16:04,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:16:04,193 INFO L93 Difference]: Finished difference Result 431 states and 534 transitions. [2023-11-29 04:16:04,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-29 04:16:04,195 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 11 states have call successors, (19), 9 states have call predecessors, (19), 5 states have return successors, (12), 10 states have call predecessors, (12), 7 states have call successors, (12) Word has length 80 [2023-11-29 04:16:04,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:16:04,197 INFO L225 Difference]: With dead ends: 431 [2023-11-29 04:16:04,197 INFO L226 Difference]: Without dead ends: 431 [2023-11-29 04:16:04,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=283, Invalid=2167, Unknown=0, NotChecked=0, Total=2450 [2023-11-29 04:16:04,198 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 855 mSDsluCounter, 4782 mSDsCounter, 0 mSdLazyCounter, 2508 mSolverCounterSat, 378 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 5151 SdHoareTripleChecker+Invalid, 2886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 378 IncrementalHoareTripleChecker+Valid, 2508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:16:04,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 5151 Invalid, 2886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [378 Valid, 2508 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time] [2023-11-29 04:16:04,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2023-11-29 04:16:04,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 360. [2023-11-29 04:16:04,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 208 states have (on average 1.5144230769230769) internal successors, (315), 247 states have internal predecessors, (315), 99 states have call successors, (99), 22 states have call predecessors, (99), 22 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2023-11-29 04:16:04,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 513 transitions. [2023-11-29 04:16:04,207 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 513 transitions. Word has length 80 [2023-11-29 04:16:04,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:16:04,207 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 513 transitions. [2023-11-29 04:16:04,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 11 states have call successors, (19), 9 states have call predecessors, (19), 5 states have return successors, (12), 10 states have call predecessors, (12), 7 states have call successors, (12) [2023-11-29 04:16:04,207 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 513 transitions. [2023-11-29 04:16:04,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 04:16:04,208 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:16:04,208 INFO L195 NwaCegarLoop]: trace histogram [20, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:16:04,218 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 04:16:04,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:16:04,409 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting DUPFFexgcdErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-11-29 04:16:04,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:16:04,409 INFO L85 PathProgramCache]: Analyzing trace with hash 624601517, now seen corresponding path program 1 times [2023-11-29 04:16:04,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:16:04,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [290959838] [2023-11-29 04:16:04,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:16:04,410 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:16:04,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:16:04,410 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:16:04,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 04:16:05,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:16:05,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 704 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 04:16:05,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:16:05,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:16:05,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 17 [2023-11-29 04:16:06,096 INFO L349 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-11-29 04:16:06,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 58 treesize of output 26 [2023-11-29 04:16:06,161 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-11-29 04:16:06,161 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:16:06,161 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:16:06,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [290959838] [2023-11-29 04:16:06,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [290959838] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:16:06,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:16:06,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-29 04:16:06,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712992326] [2023-11-29 04:16:06,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:16:06,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 04:16:06,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:16:06,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 04:16:06,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-11-29 04:16:06,163 INFO L87 Difference]: Start difference. First operand 360 states and 513 transitions. Second operand has 14 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 3 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-29 04:16:08,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:16:08,171 INFO L93 Difference]: Finished difference Result 321 states and 417 transitions. [2023-11-29 04:16:08,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 04:16:08,172 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 3 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 78 [2023-11-29 04:16:08,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:16:08,173 INFO L225 Difference]: With dead ends: 321 [2023-11-29 04:16:08,174 INFO L226 Difference]: Without dead ends: 312 [2023-11-29 04:16:08,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 60 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2023-11-29 04:16:08,174 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 70 mSDsluCounter, 1428 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 1580 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 04:16:08,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 1580 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 04:16:08,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2023-11-29 04:16:08,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 289. [2023-11-29 04:16:08,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 168 states have (on average 1.4404761904761905) internal successors, (242), 204 states have internal predecessors, (242), 70 states have call successors, (70), 20 states have call predecessors, (70), 20 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2023-11-29 04:16:08,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 382 transitions. [2023-11-29 04:16:08,182 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 382 transitions. Word has length 78 [2023-11-29 04:16:08,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:16:08,182 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 382 transitions. [2023-11-29 04:16:08,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 3 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-29 04:16:08,182 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 382 transitions. [2023-11-29 04:16:08,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-29 04:16:08,183 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:16:08,183 INFO L195 NwaCegarLoop]: trace histogram [20, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:16:08,195 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 04:16:08,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:16:08,383 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting DUPFFexgcdErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-11-29 04:16:08,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:16:08,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1064731552, now seen corresponding path program 1 times [2023-11-29 04:16:08,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:16:08,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1683756832] [2023-11-29 04:16:08,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:16:08,385 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:16:08,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:16:08,385 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:16:08,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 04:16:09,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:16:09,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-29 04:16:09,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:16:09,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 04:16:09,466 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 15 treesize of output 1 [2023-11-29 04:16:09,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 15 [2023-11-29 04:16:09,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 15 [2023-11-29 04:16:09,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 15 [2023-11-29 04:16:10,210 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 19 treesize of output 11 [2023-11-29 04:16:10,232 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 126 proven. 4 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2023-11-29 04:16:10,233 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:16:11,723 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 124 proven. 4 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-11-29 04:16:11,723 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:16:11,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1683756832] [2023-11-29 04:16:11,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1683756832] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:16:11,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:16:11,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 22 [2023-11-29 04:16:11,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072967486] [2023-11-29 04:16:11,724 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:16:11,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 04:16:11,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:16:11,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 04:16:11,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2023-11-29 04:16:11,725 INFO L87 Difference]: Start difference. First operand 289 states and 382 transitions. Second operand has 23 states, 20 states have (on average 3.35) internal successors, (67), 17 states have internal predecessors, (67), 7 states have call successors, (18), 6 states have call predecessors, (18), 4 states have return successors, (15), 7 states have call predecessors, (15), 5 states have call successors, (15) [2023-11-29 04:16:19,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:16:20,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:16:20,090 INFO L93 Difference]: Finished difference Result 354 states and 475 transitions. [2023-11-29 04:16:20,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 04:16:20,090 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 3.35) internal successors, (67), 17 states have internal predecessors, (67), 7 states have call successors, (18), 6 states have call predecessors, (18), 4 states have return successors, (15), 7 states have call predecessors, (15), 5 states have call successors, (15) Word has length 89 [2023-11-29 04:16:20,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:16:20,092 INFO L225 Difference]: With dead ends: 354 [2023-11-29 04:16:20,092 INFO L226 Difference]: Without dead ends: 354 [2023-11-29 04:16:20,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 144 SyntacticMatches, 11 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=108, Invalid=704, Unknown=0, NotChecked=0, Total=812 [2023-11-29 04:16:20,093 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 139 mSDsluCounter, 1993 mSDsCounter, 0 mSdLazyCounter, 1906 mSolverCounterSat, 59 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 2180 SdHoareTripleChecker+Invalid, 1966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1906 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:16:20,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 2180 Invalid, 1966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1906 Invalid, 1 Unknown, 0 Unchecked, 8.1s Time] [2023-11-29 04:16:20,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2023-11-29 04:16:20,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 289. [2023-11-29 04:16:20,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 168 states have (on average 1.4345238095238095) internal successors, (241), 204 states have internal predecessors, (241), 70 states have call successors, (70), 20 states have call predecessors, (70), 20 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2023-11-29 04:16:20,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 381 transitions. [2023-11-29 04:16:20,102 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 381 transitions. Word has length 89 [2023-11-29 04:16:20,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:16:20,102 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 381 transitions. [2023-11-29 04:16:20,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 3.35) internal successors, (67), 17 states have internal predecessors, (67), 7 states have call successors, (18), 6 states have call predecessors, (18), 4 states have return successors, (15), 7 states have call predecessors, (15), 5 states have call successors, (15) [2023-11-29 04:16:20,102 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 381 transitions. [2023-11-29 04:16:20,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-29 04:16:20,102 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:16:20,103 INFO L195 NwaCegarLoop]: trace histogram [20, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:16:20,112 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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)] Ended with exit code 0 [2023-11-29 04:16:20,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:16:20,303 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting DUPFFexgcdErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-11-29 04:16:20,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:16:20,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1064731551, now seen corresponding path program 1 times [2023-11-29 04:16:20,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:16:20,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2045329931] [2023-11-29 04:16:20,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:16:20,304 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:16:20,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:16:20,305 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:16:20,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 04:16:21,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:16:21,370 INFO L262 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 54 conjunts are in the unsatisfiable core [2023-11-29 04:16:21,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:16:21,396 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 10 treesize of output 9 [2023-11-29 04:16:21,428 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 04:16:21,441 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 15 treesize of output 1 [2023-11-29 04:16:21,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 17 [2023-11-29 04:16:21,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 11 [2023-11-29 04:16:21,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 17 [2023-11-29 04:16:21,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 11 [2023-11-29 04:16:21,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 13 [2023-11-29 04:16:21,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 11 [2023-11-29 04:16:22,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-29 04:16:22,849 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 126 proven. 4 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2023-11-29 04:16:22,849 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:16:47,026 WARN L293 SmtUtils]: Spent 23.12s on a formula simplification. DAG size of input: 117 DAG size of output: 109 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-29 04:16:48,954 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 126 proven. 4 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2023-11-29 04:16:48,954 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:16:48,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2045329931] [2023-11-29 04:16:48,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2045329931] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:16:48,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:16:48,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 24 [2023-11-29 04:16:48,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929145315] [2023-11-29 04:16:48,954 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:16:48,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-29 04:16:48,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:16:48,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-29 04:16:48,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2023-11-29 04:16:48,955 INFO L87 Difference]: Start difference. First operand 289 states and 381 transitions. Second operand has 25 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 19 states have internal predecessors, (70), 7 states have call successors, (18), 6 states have call predecessors, (18), 4 states have return successors, (15), 7 states have call predecessors, (15), 5 states have call successors, (15) [2023-11-29 04:16:58,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:16:58,410 INFO L93 Difference]: Finished difference Result 319 states and 419 transitions. [2023-11-29 04:16:58,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 04:16:58,411 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 19 states have internal predecessors, (70), 7 states have call successors, (18), 6 states have call predecessors, (18), 4 states have return successors, (15), 7 states have call predecessors, (15), 5 states have call successors, (15) Word has length 89 [2023-11-29 04:16:58,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:16:58,413 INFO L225 Difference]: With dead ends: 319 [2023-11-29 04:16:58,413 INFO L226 Difference]: Without dead ends: 319 [2023-11-29 04:16:58,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 144 SyntacticMatches, 11 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=144, Invalid=1116, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 04:16:58,414 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 164 mSDsluCounter, 1675 mSDsCounter, 0 mSdLazyCounter, 1729 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 1833 SdHoareTripleChecker+Invalid, 1801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2023-11-29 04:16:58,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 1833 Invalid, 1801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1729 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2023-11-29 04:16:58,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2023-11-29 04:16:58,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 289. [2023-11-29 04:16:58,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 168 states have (on average 1.4285714285714286) internal successors, (240), 204 states have internal predecessors, (240), 70 states have call successors, (70), 20 states have call predecessors, (70), 20 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2023-11-29 04:16:58,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 380 transitions. [2023-11-29 04:16:58,423 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 380 transitions. Word has length 89 [2023-11-29 04:16:58,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:16:58,423 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 380 transitions. [2023-11-29 04:16:58,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 19 states have internal predecessors, (70), 7 states have call successors, (18), 6 states have call predecessors, (18), 4 states have return successors, (15), 7 states have call predecessors, (15), 5 states have call successors, (15) [2023-11-29 04:16:58,423 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 380 transitions. [2023-11-29 04:16:58,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-29 04:16:58,424 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:16:58,424 INFO L195 NwaCegarLoop]: trace histogram [20, 8, 8, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:16:58,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 04:16:58,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:16:58,625 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting DUPFFexgcdErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-11-29 04:16:58,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:16:58,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1418296190, now seen corresponding path program 1 times [2023-11-29 04:16:58,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:16:58,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [904060905] [2023-11-29 04:16:58,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:16:58,626 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:16:58,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:16:58,627 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:16:58,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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)] Waiting until timeout for monitored process [2023-11-29 04:16:59,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:16:59,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 68 conjunts are in the unsatisfiable core [2023-11-29 04:16:59,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:16:59,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 8 [2023-11-29 04:17:01,174 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 69 proven. 4 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2023-11-29 04:17:01,174 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:17:05,811 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 12 proven. 51 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2023-11-29 04:17:05,811 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:17:05,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [904060905] [2023-11-29 04:17:05,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [904060905] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:17:05,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:17:05,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 46 [2023-11-29 04:17:05,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439150940] [2023-11-29 04:17:05,812 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:17:05,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-29 04:17:05,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:17:05,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-29 04:17:05,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1904, Unknown=0, NotChecked=0, Total=2070 [2023-11-29 04:17:05,814 INFO L87 Difference]: Start difference. First operand 289 states and 380 transitions. Second operand has 46 states, 27 states have (on average 2.814814814814815) internal successors, (76), 29 states have internal predecessors, (76), 15 states have call successors, (25), 8 states have call predecessors, (25), 10 states have return successors, (20), 14 states have call predecessors, (20), 11 states have call successors, (20) [2023-11-29 04:17:10,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:17:15,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:17:22,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:17:32,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:17:37,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:17:42,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:17:46,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:17:53,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:17:53,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:17:53,397 INFO L93 Difference]: Finished difference Result 224 states and 254 transitions. [2023-11-29 04:17:53,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-29 04:17:53,398 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 27 states have (on average 2.814814814814815) internal successors, (76), 29 states have internal predecessors, (76), 15 states have call successors, (25), 8 states have call predecessors, (25), 10 states have return successors, (20), 14 states have call predecessors, (20), 11 states have call successors, (20) Word has length 99 [2023-11-29 04:17:53,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:17:53,400 INFO L225 Difference]: With dead ends: 224 [2023-11-29 04:17:53,400 INFO L226 Difference]: Without dead ends: 224 [2023-11-29 04:17:53,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 153 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 875 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=323, Invalid=3459, Unknown=0, NotChecked=0, Total=3782 [2023-11-29 04:17:53,401 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 94 mSDsluCounter, 3564 mSDsCounter, 0 mSdLazyCounter, 2157 mSolverCounterSat, 42 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 3706 SdHoareTripleChecker+Invalid, 2206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 2157 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.8s IncrementalHoareTripleChecker+Time [2023-11-29 04:17:53,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 3706 Invalid, 2206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 2157 Invalid, 7 Unknown, 0 Unchecked, 44.8s Time] [2023-11-29 04:17:53,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-11-29 04:17:53,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 205. [2023-11-29 04:17:53,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 123 states have (on average 1.3008130081300813) internal successors, (160), 153 states have internal predecessors, (160), 37 states have call successors, (37), 17 states have call predecessors, (37), 17 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-29 04:17:53,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 234 transitions. [2023-11-29 04:17:53,405 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 234 transitions. Word has length 99 [2023-11-29 04:17:53,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:17:53,405 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 234 transitions. [2023-11-29 04:17:53,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 27 states have (on average 2.814814814814815) internal successors, (76), 29 states have internal predecessors, (76), 15 states have call successors, (25), 8 states have call predecessors, (25), 10 states have return successors, (20), 14 states have call predecessors, (20), 11 states have call successors, (20) [2023-11-29 04:17:53,406 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 234 transitions. [2023-11-29 04:17:53,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-29 04:17:53,406 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:17:53,406 INFO L195 NwaCegarLoop]: trace histogram [20, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:17:53,414 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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)] Ended with exit code 0 [2023-11-29 04:17:53,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:17:53,607 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-11-29 04:17:53,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:17:53,607 INFO L85 PathProgramCache]: Analyzing trace with hash 79185767, now seen corresponding path program 1 times [2023-11-29 04:17:53,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:17:53,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1975896769] [2023-11-29 04:17:53,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:17:53,608 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:17:53,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:17:53,609 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:17:53,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 04:17:55,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:17:55,346 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 04:17:56,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:17:56,672 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-11-29 04:17:56,672 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 04:17:56,673 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (54 of 55 remaining) [2023-11-29 04:17:56,675 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 55 remaining) [2023-11-29 04:17:56,675 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 55 remaining) [2023-11-29 04:17:56,675 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 55 remaining) [2023-11-29 04:17:56,675 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFnewErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 55 remaining) [2023-11-29 04:17:56,676 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFnewErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 55 remaining) [2023-11-29 04:17:56,676 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFnewErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 55 remaining) [2023-11-29 04:17:56,676 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFnewErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 55 remaining) [2023-11-29 04:17:56,676 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFnewErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 55 remaining) [2023-11-29 04:17:56,676 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFnewErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE (45 of 55 remaining) [2023-11-29 04:17:56,677 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFnewErr7ASSERT_VIOLATIONMEMORY_DEREFERENCE (44 of 55 remaining) [2023-11-29 04:17:56,677 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFnewErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 55 remaining) [2023-11-29 04:17:56,677 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFnewErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 55 remaining) [2023-11-29 04:17:56,677 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFnewErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 55 remaining) [2023-11-29 04:17:56,677 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFnewErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 55 remaining) [2023-11-29 04:17:56,677 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 55 remaining) [2023-11-29 04:17:56,677 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 55 remaining) [2023-11-29 04:17:56,677 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 55 remaining) [2023-11-29 04:17:56,678 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 55 remaining) [2023-11-29 04:17:56,678 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 55 remaining) [2023-11-29 04:17:56,678 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 55 remaining) [2023-11-29 04:17:56,678 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 55 remaining) [2023-11-29 04:17:56,678 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 55 remaining) [2023-11-29 04:17:56,678 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 55 remaining) [2023-11-29 04:17:56,678 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 55 remaining) [2023-11-29 04:17:56,678 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 55 remaining) [2023-11-29 04:17:56,679 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 55 remaining) [2023-11-29 04:17:56,679 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 55 remaining) [2023-11-29 04:17:56,679 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 55 remaining) [2023-11-29 04:17:56,679 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 55 remaining) [2023-11-29 04:17:56,679 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 55 remaining) [2023-11-29 04:17:56,679 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 55 remaining) [2023-11-29 04:17:56,679 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 55 remaining) [2023-11-29 04:17:56,679 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 55 remaining) [2023-11-29 04:17:56,680 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 55 remaining) [2023-11-29 04:17:56,680 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 55 remaining) [2023-11-29 04:17:56,680 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 55 remaining) [2023-11-29 04:17:56,680 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 55 remaining) [2023-11-29 04:17:56,680 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 55 remaining) [2023-11-29 04:17:56,680 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 55 remaining) [2023-11-29 04:17:56,680 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 55 remaining) [2023-11-29 04:17:56,680 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 55 remaining) [2023-11-29 04:17:56,681 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 55 remaining) [2023-11-29 04:17:56,681 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 55 remaining) [2023-11-29 04:17:56,681 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 55 remaining) [2023-11-29 04:17:56,681 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 55 remaining) [2023-11-29 04:17:56,681 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 55 remaining) [2023-11-29 04:17:56,681 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 55 remaining) [2023-11-29 04:17:56,681 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 55 remaining) [2023-11-29 04:17:56,681 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 55 remaining) [2023-11-29 04:17:56,681 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 55 remaining) [2023-11-29 04:17:56,682 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 55 remaining) [2023-11-29 04:17:56,682 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 55 remaining) [2023-11-29 04:17:56,682 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 55 remaining) [2023-11-29 04:17:56,682 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 55 remaining) [2023-11-29 04:17:56,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2023-11-29 04:17:56,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:17:56,885 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:17:56,888 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 04:17:56,927 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #Ultimate.C_memset_#res#1 [2023-11-29 04:17:56,928 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~ret65 [2023-11-29 04:17:56,928 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #Ultimate.C_memset_#res#1 [2023-11-29 04:17:56,929 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~ret67 [2023-11-29 04:17:56,930 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret36 could not be translated [2023-11-29 04:17:56,930 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret37 could not be translated [2023-11-29 04:17:56,930 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret36 could not be translated [2023-11-29 04:17:56,931 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret36 could not be translated [2023-11-29 04:17:56,932 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret37 could not be translated [2023-11-29 04:17:56,932 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret36 could not be translated [2023-11-29 04:17:56,932 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret39 could not be translated [2023-11-29 04:17:56,933 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short41 could not be translated [2023-11-29 04:17:56,933 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret39 could not be translated [2023-11-29 04:17:56,934 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short41 could not be translated [2023-11-29 04:17:56,934 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret40 could not be translated [2023-11-29 04:17:56,934 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret39 could not be translated [2023-11-29 04:17:56,934 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short41 could not be translated [2023-11-29 04:17:56,934 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret40 could not be translated [2023-11-29 04:17:56,935 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret39 could not be translated [2023-11-29 04:17:56,935 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem42 [2023-11-29 04:17:56,935 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem42 [2023-11-29 04:17:56,936 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem43 could not be translated [2023-11-29 04:17:56,936 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~ret38 [2023-11-29 04:17:56,937 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~ret69 [2023-11-29 04:17:56,947 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 04:17:56 BoogieIcfgContainer [2023-11-29 04:17:56,947 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 04:17:56,948 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 04:17:56,948 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 04:17:56,948 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 04:17:56,949 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:12:11" (3/4) ... [2023-11-29 04:17:56,950 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-29 04:17:56,951 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 04:17:56,951 INFO L158 Benchmark]: Toolchain (without parser) took 346902.87ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 56.9MB in the beginning and 45.8MB in the end (delta: 11.0MB). Peak memory consumption was 26.6MB. Max. memory is 16.1GB. [2023-11-29 04:17:56,951 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 56.6MB. Free memory is still 33.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:17:56,952 INFO L158 Benchmark]: CACSL2BoogieTranslator took 772.29ms. Allocated memory is still 83.9MB. Free memory was 56.6MB in the beginning and 38.0MB in the end (delta: 18.7MB). Peak memory consumption was 17.2MB. Max. memory is 16.1GB. [2023-11-29 04:17:56,952 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.15ms. Allocated memory is still 83.9MB. Free memory was 38.0MB in the beginning and 61.8MB in the end (delta: -23.8MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. [2023-11-29 04:17:56,952 INFO L158 Benchmark]: Boogie Preprocessor took 82.54ms. Allocated memory is still 83.9MB. Free memory was 61.8MB in the beginning and 56.5MB in the end (delta: 5.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 04:17:56,952 INFO L158 Benchmark]: RCFGBuilder took 1009.03ms. Allocated memory is still 83.9MB. Free memory was 56.5MB in the beginning and 36.5MB in the end (delta: 20.0MB). Peak memory consumption was 31.6MB. Max. memory is 16.1GB. [2023-11-29 04:17:56,952 INFO L158 Benchmark]: TraceAbstraction took 344965.06ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 36.0MB in the beginning and 46.5MB in the end (delta: -10.5MB). Peak memory consumption was 35.9MB. Max. memory is 16.1GB. [2023-11-29 04:17:56,952 INFO L158 Benchmark]: Witness Printer took 3.03ms. Allocated memory is still 100.7MB. Free memory was 46.5MB in the beginning and 45.8MB in the end (delta: 692.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:17:56,953 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 56.6MB. Free memory is still 33.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 772.29ms. Allocated memory is still 83.9MB. Free memory was 56.6MB in the beginning and 38.0MB in the end (delta: 18.7MB). Peak memory consumption was 17.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.15ms. Allocated memory is still 83.9MB. Free memory was 38.0MB in the beginning and 61.8MB in the end (delta: -23.8MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 82.54ms. Allocated memory is still 83.9MB. Free memory was 61.8MB in the beginning and 56.5MB in the end (delta: 5.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1009.03ms. Allocated memory is still 83.9MB. Free memory was 56.5MB in the beginning and 36.5MB in the end (delta: 20.0MB). Peak memory consumption was 31.6MB. Max. memory is 16.1GB. * TraceAbstraction took 344965.06ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 36.0MB in the beginning and 46.5MB in the end (delta: -10.5MB). Peak memory consumption was 35.9MB. Max. memory is 16.1GB. * Witness Printer took 3.03ms. Allocated memory is still 100.7MB. Free memory was 46.5MB in the beginning and 45.8MB in the end (delta: 692.5kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #Ultimate.C_memset_#res#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~ret65 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #Ultimate.C_memset_#res#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~ret67 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret36 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret37 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret36 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret36 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret37 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret36 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret39 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short41 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret39 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short41 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret40 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret39 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short41 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret40 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret39 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem42 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem42 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem43 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~ret38 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~ret69 - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 964]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 964. Possible FailurePath: [L966] DUPFF f, g, cf, cg, h; VAL [cf={25:0}, cg={11:0}] [L967] CALL, EXPR DUPFFnew(1) [L894] DUPFF ans = (DUPFF)malloc(sizeof(struct DUPFFstruct)); [L895] ans->coeffs = 0 VAL [\old(maxdeg)=1, ans={6:0}, maxdeg=1] [L896] COND TRUE maxdeg >= 0 [L897] ans->coeffs = (FFelem*)malloc((maxdeg+1)*sizeof(FFelem)) [L898] EXPR ans->coeffs [L898] FCALL memset(ans->coeffs, 0, (maxdeg+1)*sizeof(FFelem)) [L900] ans->maxdeg = maxdeg VAL [\old(maxdeg)=1, ans={6:0}, maxdeg=1] [L901] ans->deg = -1 [L902] return ans; [L967] RET, EXPR DUPFFnew(1) VAL [cf={25:0}, cg={11:0}] [L967] f = DUPFFnew(1) [L967] EXPR f->coeffs [L967] f->coeffs[1] = 1 [L967] f->deg = 1 [L968] CALL, EXPR DUPFFnew(2) [L894] DUPFF ans = (DUPFF)malloc(sizeof(struct DUPFFstruct)); [L895] ans->coeffs = 0 VAL [\old(maxdeg)=2, ans={7:0}, maxdeg=2] [L896] COND TRUE maxdeg >= 0 [L897] ans->coeffs = (FFelem*)malloc((maxdeg+1)*sizeof(FFelem)) [L898] EXPR ans->coeffs [L898] FCALL memset(ans->coeffs, 0, (maxdeg+1)*sizeof(FFelem)) [L900] ans->maxdeg = maxdeg VAL [\old(maxdeg)=2, ans={7:0}, maxdeg=2] [L901] ans->deg = -1 [L902] return ans; [L968] RET, EXPR DUPFFnew(2) VAL [cf={25:0}, cg={11:0}, f={6:0}] [L968] g = DUPFFnew(2) [L968] EXPR g->coeffs [L968] g->coeffs[2] = 1 [L968] g->deg = 2 [L969] CALL, EXPR DUPFFexgcd(&cf, &cg, f, g) VAL [f={6:0}, fcofac={25:0}, g={7:0}, gcofac={11:0}] [L919] DUPFF u, v, uf, ug, vf, vg; [L920] FFelem q, lcu, lcvrecip, p; [L921] int df, dg, du, dv; VAL [f={6:0}, f={6:0}, fcofac={25:0}, fcofac={25:0}, g={7:0}, g={7:0}, gcofac={11:0}, gcofac={11:0}] [L922] CALL, EXPR DUPFFdeg(f) VAL [f={6:0}] [L890] EXPR f->deg [L890] return f->deg; [L922] RET, EXPR DUPFFdeg(f) VAL [f={6:0}, f={6:0}, fcofac={25:0}, fcofac={25:0}, g={7:0}, g={7:0}, gcofac={11:0}, gcofac={11:0}] [L922] CALL, EXPR DUPFFdeg(g) VAL [f={7:0}] [L890] EXPR f->deg [L890] return f->deg; [L922] RET, EXPR DUPFFdeg(g) VAL [f={6:0}, f={6:0}, fcofac={25:0}, fcofac={25:0}, g={7:0}, g={7:0}, gcofac={11:0}, gcofac={11:0}] [L922] COND TRUE DUPFFdeg(f) < DUPFFdeg(g) [L922] CALL, EXPR DUPFFexgcd(gcofac, fcofac, g, f) VAL [f={7:0}, fcofac={11:0}, g={6:0}, gcofac={25:0}] [L919] DUPFF u, v, uf, ug, vf, vg; [L920] FFelem q, lcu, lcvrecip, p; [L921] int df, dg, du, dv; VAL [f={7:0}, f={7:0}, fcofac={11:0}, fcofac={11:0}, g={6:0}, g={6:0}, gcofac={25:0}, gcofac={25:0}] [L922] CALL, EXPR DUPFFdeg(f) VAL [f={7:0}] [L890] EXPR f->deg [L890] return f->deg; [L922] RET, EXPR DUPFFdeg(f) VAL [f={7:0}, f={7:0}, fcofac={11:0}, fcofac={11:0}, g={6:0}, g={6:0}, gcofac={25:0}, gcofac={25:0}] [L922] CALL, EXPR DUPFFdeg(g) VAL [f={6:0}] [L890] EXPR f->deg [L890] return f->deg; [L922] RET, EXPR DUPFFdeg(g) VAL [f={7:0}, f={7:0}, fcofac={11:0}, fcofac={11:0}, g={6:0}, g={6:0}, gcofac={25:0}, gcofac={25:0}] [L922] COND FALSE !(DUPFFdeg(f) < DUPFFdeg(g)) [L923] CALL, EXPR DUPFFdeg(f) VAL [f={7:0}] [L890] EXPR f->deg [L890] return f->deg; [L923] RET, EXPR DUPFFdeg(f) VAL [f={7:0}, f={7:0}, fcofac={11:0}, fcofac={11:0}, g={6:0}, g={6:0}, gcofac={25:0}, gcofac={25:0}] [L923] DUPFFdeg(f) != 2 || DUPFFdeg(g) != 1 VAL [f={7:0}, f={7:0}, fcofac={11:0}, fcofac={11:0}, g={6:0}, g={6:0}, gcofac={25:0}, gcofac={25:0}] [L923] CALL, EXPR DUPFFdeg(g) VAL [f={6:0}] [L890] EXPR f->deg [L890] return f->deg; [L923] RET, EXPR DUPFFdeg(g) VAL [f={7:0}, f={7:0}, fcofac={11:0}, fcofac={11:0}, g={6:0}, g={6:0}, gcofac={25:0}, gcofac={25:0}] [L923] DUPFFdeg(f) != 2 || DUPFFdeg(g) != 1 VAL [f={7:0}, f={7:0}, fcofac={11:0}, fcofac={11:0}, g={6:0}, g={6:0}, gcofac={25:0}, gcofac={25:0}] [L923] COND FALSE !(DUPFFdeg(f) != 2 || DUPFFdeg(g) != 1) [L924] EXPR f->coeffs VAL [f={7:0}, f={7:0}, fcofac={11:0}, fcofac={11:0}, g={6:0}, g={6:0}, gcofac={25:0}, gcofac={25:0}] [L924] EXPR f->coeffs[0] VAL [f={7:0}, f={7:0}, fcofac={11:0}, fcofac={11:0}, g={6:0}, g={6:0}, gcofac={25:0}, gcofac={25:0}] [L924] COND TRUE f->coeffs[0] == 0 [L924] return f; VAL [\result={7:0}, f={7:0}, f={7:0}, fcofac={11:0}, fcofac={11:0}, g={6:0}, g={6:0}, gcofac={25:0}, gcofac={25:0}] [L922] RET, EXPR DUPFFexgcd(gcofac, fcofac, g, f) VAL [f={6:0}, f={6:0}, fcofac={25:0}, fcofac={25:0}, g={7:0}, g={7:0}, gcofac={11:0}, gcofac={11:0}] [L922] return DUPFFexgcd(gcofac, fcofac, g, f); [L969] RET, EXPR DUPFFexgcd(&cf, &cg, f, g) VAL [cf={25:0}, cg={11:0}, f={6:0}, g={7:0}] [L969] h = DUPFFexgcd(&cf, &cg, f, g) [L970] h = h [L971] return 0; [L971] return 0; [L971] return 0; VAL [\result=0, f={6:0}, g={7:0}, h={7:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 167 locations, 55 error locations. Started 1 CEGAR loops. OverallTime: 344.8s, OverallIterations: 34, TraceHistogramMax: 20, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 258.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 37 mSolverCounterUnknown, 4522 SdHoareTripleChecker+Valid, 244.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4475 mSDsluCounter, 37290 SdHoareTripleChecker+Invalid, 235.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 999 IncrementalHoareTripleChecker+Unchecked, 32009 mSDsCounter, 1853 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 28148 IncrementalHoareTripleChecker+Invalid, 31037 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1853 mSolverCounterUnsat, 5281 mSDtfsCounter, 28148 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2679 GetRequests, 2046 SyntacticMatches, 49 SemanticMatches, 584 ConstructedPredicates, 3 IntricatePredicates, 5 DeprecatedPredicates, 3212 ImplicationChecksByTransitivity, 35.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=360occurred in iteration=29, InterpolantAutomatonStates: 412, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 33 MinimizatonAttempts, 524 StatesRemovedByMinimization, 23 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9s SsaConstructionTime, 14.0s SatisfiabilityAnalysisTime, 58.0s InterpolantComputationTime, 1721 NumberOfCodeBlocks, 1637 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 2435 ConstructedInterpolants, 192 QuantifiedInterpolants, 18404 SizeOfPredicates, 235 NumberOfNonLiveVariables, 15541 ConjunctsInSsa, 630 ConjunctsInUnsatCore, 47 InterpolantComputations, 19 PerfectInterpolantSequences, 7134/8312 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-29 04:17:57,017 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_676d6775-f227-4f41-a5fd-d0f83e585731/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample