./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/selectionsort-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/selectionsort-alloca-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl --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 1c36df5364345a00481880384557a6da7ee9f3df41e2ea49d72bfaffe4fac7a5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:23:22,714 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:23:22,867 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-12 02:23:22,874 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:23:22,875 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:23:22,918 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:23:22,919 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:23:22,920 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:23:22,921 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:23:22,926 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:23:22,927 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:23:22,928 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:23:22,929 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:23:22,930 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:23:22,931 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:23:22,931 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:23:22,932 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:23:22,932 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:23:22,933 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:23:22,933 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:23:22,934 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:23:22,934 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:23:22,935 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:23:22,935 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:23:22,936 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:23:22,936 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:23:22,937 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:23:22,937 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:23:22,938 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:23:22,938 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:23:22,940 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:23:22,940 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:23:22,940 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:23:22,941 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:23:22,941 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:23:22,941 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:23:22,942 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:23:22,942 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:23:22,942 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_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c36df5364345a00481880384557a6da7ee9f3df41e2ea49d72bfaffe4fac7a5 [2023-11-12 02:23:23,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:23:23,324 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:23:23,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:23:23,328 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:23:23,329 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:23:23,330 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/array-memsafety/selectionsort-alloca-1.i [2023-11-12 02:23:26,303 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:23:26,637 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:23:26,638 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/sv-benchmarks/c/array-memsafety/selectionsort-alloca-1.i [2023-11-12 02:23:26,663 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/data/bb8bc53e3/a04a798612f54f1487f3ce2f3d46afb3/FLAG381578dfa [2023-11-12 02:23:26,684 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/data/bb8bc53e3/a04a798612f54f1487f3ce2f3d46afb3 [2023-11-12 02:23:26,689 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:23:26,690 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:23:26,692 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:23:26,692 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:23:26,698 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:23:26,699 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:23:26" (1/1) ... [2023-11-12 02:23:26,701 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3289f5e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:26, skipping insertion in model container [2023-11-12 02:23:26,701 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:23:26" (1/1) ... [2023-11-12 02:23:26,746 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:23:27,136 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:23:27,152 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) [2023-11-12 02:23:27,153 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@46ab5c9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:27, skipping insertion in model container [2023-11-12 02:23:27,153 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:23:27,154 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-12 02:23:27,156 INFO L158 Benchmark]: Toolchain (without parser) took 464.64ms. Allocated memory is still 155.2MB. Free memory was 121.6MB in the beginning and 109.8MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-12 02:23:27,157 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 115.3MB. Free memory is still 89.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:23:27,158 INFO L158 Benchmark]: CACSL2BoogieTranslator took 461.73ms. Allocated memory is still 155.2MB. Free memory was 121.6MB in the beginning and 109.8MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-12 02:23:27,160 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 115.3MB. Free memory is still 89.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 461.73ms. Allocated memory is still 155.2MB. Free memory was 121.6MB in the beginning and 109.8MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 534]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/selectionsort-alloca-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl --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 1c36df5364345a00481880384557a6da7ee9f3df41e2ea49d72bfaffe4fac7a5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:23:29,685 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:23:29,783 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-12 02:23:29,789 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:23:29,790 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:23:29,843 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:23:29,844 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:23:29,845 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:23:29,846 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:23:29,852 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:23:29,853 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:23:29,853 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:23:29,854 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:23:29,856 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:23:29,856 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:23:29,857 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:23:29,857 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:23:29,858 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:23:29,858 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:23:29,859 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:23:29,860 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:23:29,860 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:23:29,861 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:23:29,861 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 02:23:29,862 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 02:23:29,862 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:23:29,863 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:23:29,863 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:23:29,868 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:23:29,868 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:23:29,870 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:23:29,870 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:23:29,870 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:23:29,871 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:23:29,871 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-12 02:23:29,871 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 02:23:29,872 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:23:29,872 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:23:29,872 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:23:29,873 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-12 02:23:29,874 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:23:29,874 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_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c36df5364345a00481880384557a6da7ee9f3df41e2ea49d72bfaffe4fac7a5 [2023-11-12 02:23:30,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:23:30,253 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:23:30,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:23:30,257 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:23:30,257 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:23:30,259 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/array-memsafety/selectionsort-alloca-1.i [2023-11-12 02:23:33,491 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:23:33,817 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:23:33,817 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/sv-benchmarks/c/array-memsafety/selectionsort-alloca-1.i [2023-11-12 02:23:33,841 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/data/0f61d8ce0/3b2ec7c9f79b421bb434cea711b559e5/FLAG75f25b6a6 [2023-11-12 02:23:33,860 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/data/0f61d8ce0/3b2ec7c9f79b421bb434cea711b559e5 [2023-11-12 02:23:33,866 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:23:33,868 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:23:33,871 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:23:33,872 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:23:33,877 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:23:33,880 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:23:33" (1/1) ... [2023-11-12 02:23:33,881 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b5675ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:33, skipping insertion in model container [2023-11-12 02:23:33,882 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:23:33" (1/1) ... [2023-11-12 02:23:33,966 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:23:34,384 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:23:34,403 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-12 02:23:34,420 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:23:34,476 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:23:34,488 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:23:34,537 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:23:34,586 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:23:34,586 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:34 WrapperNode [2023-11-12 02:23:34,586 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:23:34,591 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:23:34,591 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:23:34,591 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:23:34,598 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:34" (1/1) ... [2023-11-12 02:23:34,615 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:34" (1/1) ... [2023-11-12 02:23:34,640 INFO L138 Inliner]: procedures = 117, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2023-11-12 02:23:34,641 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:23:34,642 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:23:34,642 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:23:34,642 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:23:34,652 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:34" (1/1) ... [2023-11-12 02:23:34,652 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:34" (1/1) ... [2023-11-12 02:23:34,656 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:34" (1/1) ... [2023-11-12 02:23:34,657 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:34" (1/1) ... [2023-11-12 02:23:34,666 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:34" (1/1) ... [2023-11-12 02:23:34,669 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:34" (1/1) ... [2023-11-12 02:23:34,672 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:34" (1/1) ... [2023-11-12 02:23:34,673 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:34" (1/1) ... [2023-11-12 02:23:34,676 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:23:34,677 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:23:34,678 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:23:34,678 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:23:34,679 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:34" (1/1) ... [2023-11-12 02:23:34,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:23:34,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:23:34,730 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:23:34,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:23:34,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-12 02:23:34,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:23:34,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:23:34,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-12 02:23:34,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:23:34,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:23:34,910 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:23:34,912 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:23:35,341 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:23:35,347 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:23:35,348 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-12 02:23:35,352 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:23:35 BoogieIcfgContainer [2023-11-12 02:23:35,353 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:23:35,356 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:23:35,356 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:23:35,359 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:23:35,360 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:23:33" (1/3) ... [2023-11-12 02:23:35,361 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@342e58d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:23:35, skipping insertion in model container [2023-11-12 02:23:35,361 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:34" (2/3) ... [2023-11-12 02:23:35,361 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@342e58d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:23:35, skipping insertion in model container [2023-11-12 02:23:35,362 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:23:35" (3/3) ... [2023-11-12 02:23:35,364 INFO L112 eAbstractionObserver]: Analyzing ICFG selectionsort-alloca-1.i [2023-11-12 02:23:35,386 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:23:35,386 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2023-11-12 02:23:35,447 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:23:35,454 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;@1526fb1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:23:35,455 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-11-12 02:23:35,460 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 41 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:35,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-12 02:23:35,468 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:23:35,469 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 02:23:35,470 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-12 02:23:35,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:23:35,479 INFO L85 PathProgramCache]: Analyzing trace with hash 889508873, now seen corresponding path program 1 times [2023-11-12 02:23:35,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:23:35,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [995466069] [2023-11-12 02:23:35,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:35,494 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:23:35,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:23:35,504 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:23:35,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:23:35,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:35,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:23:35,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:23:35,707 INFO L351 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 [2023-11-12 02:23:35,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:23:35,725 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:23:35,726 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:23:35,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [995466069] [2023-11-12 02:23:35,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [995466069] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:23:35,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:23:35,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:23:35,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889625473] [2023-11-12 02:23:35,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:23:35,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:23:35,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:23:35,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:23:35,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:23:35,770 INFO L87 Difference]: Start difference. First operand has 42 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 41 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:35,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:23:35,872 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2023-11-12 02:23:35,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:23:35,875 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-12 02:23:35,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:23:35,883 INFO L225 Difference]: With dead ends: 41 [2023-11-12 02:23:35,883 INFO L226 Difference]: Without dead ends: 39 [2023-11-12 02:23:35,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:23:35,889 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 35 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:23:35,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 32 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:23:35,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-11-12 02:23:35,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-11-12 02:23:35,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.72) internal successors, (43), 38 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:35,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2023-11-12 02:23:35,929 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 6 [2023-11-12 02:23:35,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:23:35,930 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2023-11-12 02:23:35,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:35,931 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2023-11-12 02:23:35,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-12 02:23:35,932 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:23:35,932 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 02:23:35,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:23:36,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:23:36,145 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-12 02:23:36,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:23:36,145 INFO L85 PathProgramCache]: Analyzing trace with hash 889508874, now seen corresponding path program 1 times [2023-11-12 02:23:36,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:23:36,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1335322657] [2023-11-12 02:23:36,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:36,147 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 [2023-11-12 02:23:36,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:23:36,148 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:23:36,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:23:36,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:36,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 02:23:36,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:23:36,241 INFO L351 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 [2023-11-12 02:23:36,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:23:36,314 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:23:36,314 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:23:36,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1335322657] [2023-11-12 02:23:36,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1335322657] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:23:36,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:23:36,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:23:36,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878617705] [2023-11-12 02:23:36,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:23:36,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:23:36,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:23:36,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:23:36,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:23:36,318 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:36,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:23:36,628 INFO L93 Difference]: Finished difference Result 79 states and 86 transitions. [2023-11-12 02:23:36,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:23:36,632 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-12 02:23:36,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:23:36,634 INFO L225 Difference]: With dead ends: 79 [2023-11-12 02:23:36,634 INFO L226 Difference]: Without dead ends: 79 [2023-11-12 02:23:36,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:23:36,636 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 45 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:23:36,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 150 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 02:23:36,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-11-12 02:23:36,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 42. [2023-11-12 02:23:36,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 41 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:36,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2023-11-12 02:23:36,650 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 6 [2023-11-12 02:23:36,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:23:36,651 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2023-11-12 02:23:36,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:36,651 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2023-11-12 02:23:36,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-12 02:23:36,652 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:23:36,652 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 02:23:36,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:23:36,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:23:36,864 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-12 02:23:36,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:23:36,864 INFO L85 PathProgramCache]: Analyzing trace with hash 889568456, now seen corresponding path program 1 times [2023-11-12 02:23:36,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:23:36,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [285285071] [2023-11-12 02:23:36,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:36,866 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 [2023-11-12 02:23:36,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:23:36,867 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:23:36,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:23:36,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:36,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 02:23:36,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:23:36,967 INFO L351 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 7 [2023-11-12 02:23:37,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:23:37,053 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:23:37,053 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:23:37,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [285285071] [2023-11-12 02:23:37,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [285285071] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:23:37,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:23:37,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:23:37,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909545427] [2023-11-12 02:23:37,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:23:37,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:23:37,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:23:37,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:23:37,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:23:37,057 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:37,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:23:37,264 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2023-11-12 02:23:37,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:23:37,265 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-12 02:23:37,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:23:37,266 INFO L225 Difference]: With dead ends: 46 [2023-11-12 02:23:37,266 INFO L226 Difference]: Without dead ends: 46 [2023-11-12 02:23:37,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:23:37,268 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 45 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:23:37,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 61 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:23:37,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-11-12 02:23:37,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2023-11-12 02:23:37,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 40 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:37,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2023-11-12 02:23:37,275 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 6 [2023-11-12 02:23:37,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:23:37,275 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2023-11-12 02:23:37,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:37,275 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2023-11-12 02:23:37,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-12 02:23:37,276 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:23:37,277 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:23:37,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:23:37,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:23:37,494 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-12 02:23:37,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:23:37,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1091210163, now seen corresponding path program 1 times [2023-11-12 02:23:37,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:23:37,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [635881179] [2023-11-12 02:23:37,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:37,496 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 [2023-11-12 02:23:37,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:23:37,501 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:23:37,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:23:37,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:37,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:23:37,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:23:37,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:23:37,701 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:23:37,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:23:37,816 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:23:37,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [635881179] [2023-11-12 02:23:37,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [635881179] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:23:37,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:23:37,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-12 02:23:37,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819906544] [2023-11-12 02:23:37,817 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:23:37,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:23:37,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:23:37,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:23:37,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:23:37,818 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:37,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:23:37,911 INFO L93 Difference]: Finished difference Result 77 states and 83 transitions. [2023-11-12 02:23:37,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:23:37,912 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-12 02:23:37,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:23:37,913 INFO L225 Difference]: With dead ends: 77 [2023-11-12 02:23:37,913 INFO L226 Difference]: Without dead ends: 77 [2023-11-12 02:23:37,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:23:37,915 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 36 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:23:37,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 208 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:23:37,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-11-12 02:23:37,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 47. [2023-11-12 02:23:37,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 46 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:37,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2023-11-12 02:23:37,922 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 10 [2023-11-12 02:23:37,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:23:37,923 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2023-11-12 02:23:37,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:37,923 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2023-11-12 02:23:37,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-12 02:23:37,924 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:23:37,924 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:23:37,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:23:38,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:23:38,136 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-12 02:23:38,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:23:38,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1900556789, now seen corresponding path program 1 times [2023-11-12 02:23:38,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:23:38,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1484946295] [2023-11-12 02:23:38,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:38,138 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:23:38,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:23:38,139 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:23:38,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:23:38,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:38,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-12 02:23:38,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:23:38,255 INFO L351 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 7 [2023-11-12 02:23:38,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:23:38,486 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:23:38,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:23:38,998 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:23:38,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1484946295] [2023-11-12 02:23:38,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1484946295] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:23:38,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:23:38,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-11-12 02:23:38,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116075797] [2023-11-12 02:23:38,999 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:23:39,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 02:23:39,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:23:39,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 02:23:39,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:23:39,001 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:40,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:23:40,145 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2023-11-12 02:23:40,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 02:23:40,146 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-12 02:23:40,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:23:40,148 INFO L225 Difference]: With dead ends: 61 [2023-11-12 02:23:40,148 INFO L226 Difference]: Without dead ends: 61 [2023-11-12 02:23:40,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2023-11-12 02:23:40,149 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 68 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-12 02:23:40,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 128 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-12 02:23:40,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-11-12 02:23:40,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2023-11-12 02:23:40,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 45 states have (on average 1.4666666666666666) internal successors, (66), 58 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:40,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2023-11-12 02:23:40,156 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 10 [2023-11-12 02:23:40,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:23:40,157 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2023-11-12 02:23:40,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:40,157 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2023-11-12 02:23:40,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-12 02:23:40,158 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:23:40,158 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:23:40,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-12 02:23:40,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:23:40,370 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-12 02:23:40,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:23:40,371 INFO L85 PathProgramCache]: Analyzing trace with hash 363893953, now seen corresponding path program 1 times [2023-11-12 02:23:40,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:23:40,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [746541435] [2023-11-12 02:23:40,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:40,372 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 [2023-11-12 02:23:40,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:23:40,373 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:23:40,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:23:40,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:40,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:23:40,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:23:40,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:23:40,498 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:23:40,499 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:23:40,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [746541435] [2023-11-12 02:23:40,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [746541435] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:23:40,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:23:40,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:23:40,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050923991] [2023-11-12 02:23:40,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:23:40,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:23:40,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:23:40,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:23:40,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:23:40,502 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:40,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:23:40,575 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions. [2023-11-12 02:23:40,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:23:40,576 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-12 02:23:40,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:23:40,577 INFO L225 Difference]: With dead ends: 65 [2023-11-12 02:23:40,577 INFO L226 Difference]: Without dead ends: 65 [2023-11-12 02:23:40,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:23:40,578 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 7 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:23:40,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 103 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:23:40,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-11-12 02:23:40,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 61. [2023-11-12 02:23:40,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 47 states have (on average 1.446808510638298) internal successors, (68), 60 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:40,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2023-11-12 02:23:40,585 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 13 [2023-11-12 02:23:40,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:23:40,585 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2023-11-12 02:23:40,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:40,586 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2023-11-12 02:23:40,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-12 02:23:40,587 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:23:40,587 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:23:40,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:23:40,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:23:40,799 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-12 02:23:40,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:23:40,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1064958531, now seen corresponding path program 1 times [2023-11-12 02:23:40,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:23:40,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [687929902] [2023-11-12 02:23:40,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:40,800 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 [2023-11-12 02:23:40,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:23:40,801 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:23:40,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:23:40,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:40,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:23:40,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:23:40,882 INFO L351 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 [2023-11-12 02:23:40,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:23:40,928 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:23:40,928 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:23:40,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [687929902] [2023-11-12 02:23:40,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [687929902] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:23:40,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:23:40,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:23:40,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368748215] [2023-11-12 02:23:40,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:23:40,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:23:40,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:23:40,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:23:40,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:23:40,931 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:41,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:23:41,082 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2023-11-12 02:23:41,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:23:41,083 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-12 02:23:41,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:23:41,084 INFO L225 Difference]: With dead ends: 55 [2023-11-12 02:23:41,084 INFO L226 Difference]: Without dead ends: 55 [2023-11-12 02:23:41,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:23:41,085 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 46 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:23:41,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 29 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:23:41,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-11-12 02:23:41,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2023-11-12 02:23:41,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 47 states have (on average 1.3191489361702127) internal successors, (62), 54 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:41,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2023-11-12 02:23:41,090 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 13 [2023-11-12 02:23:41,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:23:41,091 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2023-11-12 02:23:41,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:41,091 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2023-11-12 02:23:41,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-12 02:23:41,092 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:23:41,092 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:23:41,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-12 02:23:41,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:23:41,303 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-12 02:23:41,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:23:41,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1064958532, now seen corresponding path program 1 times [2023-11-12 02:23:41,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:23:41,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1788529772] [2023-11-12 02:23:41,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:41,304 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 [2023-11-12 02:23:41,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:23:41,305 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:23:41,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:23:41,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:41,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-12 02:23:41,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:23:41,395 INFO L351 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 7 [2023-11-12 02:23:41,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:23:41,678 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:23:42,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:23:42,095 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:23:42,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1788529772] [2023-11-12 02:23:42,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1788529772] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-12 02:23:42,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:23:42,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-11-12 02:23:42,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677191257] [2023-11-12 02:23:42,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:23:42,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:23:42,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:23:42,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:23:42,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:23:42,108 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:42,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:23:42,554 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2023-11-12 02:23:42,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:23:42,561 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-12 02:23:42,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:23:42,562 INFO L225 Difference]: With dead ends: 65 [2023-11-12 02:23:42,562 INFO L226 Difference]: Without dead ends: 65 [2023-11-12 02:23:42,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:23:42,563 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 99 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:23:42,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 37 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 02:23:42,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-11-12 02:23:42,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 61. [2023-11-12 02:23:42,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 54 states have (on average 1.3518518518518519) internal successors, (73), 60 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:42,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2023-11-12 02:23:42,571 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 13 [2023-11-12 02:23:42,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:23:42,572 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2023-11-12 02:23:42,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:42,572 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2023-11-12 02:23:42,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-12 02:23:42,573 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:23:42,573 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:23:42,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-12 02:23:42,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:23:42,784 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-12 02:23:42,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:23:42,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1064958578, now seen corresponding path program 1 times [2023-11-12 02:23:42,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:23:42,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1010206728] [2023-11-12 02:23:42,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:42,785 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:23:42,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:23:42,786 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:23:42,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:23:42,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:42,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-12 02:23:42,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:23:42,875 INFO L351 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 7 [2023-11-12 02:23:43,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:23:43,149 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:23:43,149 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:23:43,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1010206728] [2023-11-12 02:23:43,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1010206728] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:23:43,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:23:43,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:23:43,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599356981] [2023-11-12 02:23:43,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:23:43,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:23:43,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:23:43,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:23:43,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:23:43,152 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:43,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:23:43,674 INFO L93 Difference]: Finished difference Result 79 states and 90 transitions. [2023-11-12 02:23:43,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:23:43,675 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-12 02:23:43,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:23:43,676 INFO L225 Difference]: With dead ends: 79 [2023-11-12 02:23:43,676 INFO L226 Difference]: Without dead ends: 79 [2023-11-12 02:23:43,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:23:43,677 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 143 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:23:43,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 46 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 02:23:43,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-11-12 02:23:43,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 63. [2023-11-12 02:23:43,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 56 states have (on average 1.3392857142857142) internal successors, (75), 62 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:43,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 75 transitions. [2023-11-12 02:23:43,684 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 75 transitions. Word has length 13 [2023-11-12 02:23:43,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:23:43,684 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 75 transitions. [2023-11-12 02:23:43,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:43,685 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 75 transitions. [2023-11-12 02:23:43,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-12 02:23:43,685 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:23:43,686 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:23:43,700 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:23:43,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:23:43,897 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-12 02:23:43,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:23:43,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1604211706, now seen corresponding path program 1 times [2023-11-12 02:23:43,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:23:43,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1562651557] [2023-11-12 02:23:43,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:43,898 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:23:43,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:23:43,904 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:23:43,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:23:43,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:43,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:23:43,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:23:44,069 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_#t~malloc9#1.base_9| (_ BitVec 32))) (and (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc9#1.base_9| (_ bv0 1)) |c_#valid|) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc9#1.base_9|) (_ bv0 1)))) is different from true [2023-11-12 02:23:44,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:23:44,070 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:23:44,071 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:23:44,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1562651557] [2023-11-12 02:23:44,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1562651557] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:23:44,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:23:44,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:23:44,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676046442] [2023-11-12 02:23:44,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:23:44,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:23:44,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:23:44,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:23:44,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2023-11-12 02:23:44,073 INFO L87 Difference]: Start difference. First operand 63 states and 75 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:44,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:23:44,226 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2023-11-12 02:23:44,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:23:44,228 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-12 02:23:44,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:23:44,228 INFO L225 Difference]: With dead ends: 62 [2023-11-12 02:23:44,229 INFO L226 Difference]: Without dead ends: 51 [2023-11-12 02:23:44,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2023-11-12 02:23:44,230 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 22 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:23:44,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 50 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 34 Unchecked, 0.1s Time] [2023-11-12 02:23:44,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-12 02:23:44,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-11-12 02:23:44,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 50 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:44,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2023-11-12 02:23:44,234 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 14 [2023-11-12 02:23:44,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:23:44,235 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2023-11-12 02:23:44,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:44,235 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2023-11-12 02:23:44,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-12 02:23:44,236 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:23:44,236 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:23:44,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-12 02:23:44,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:23:44,445 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-12 02:23:44,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:23:44,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1346022463, now seen corresponding path program 1 times [2023-11-12 02:23:44,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:23:44,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2095015097] [2023-11-12 02:23:44,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:44,446 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 [2023-11-12 02:23:44,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:23:44,448 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:23:44,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:23:44,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:44,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-12 02:23:44,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:23:44,544 INFO L351 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 7 [2023-11-12 02:23:44,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:23:44,834 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:23:44,834 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:23:44,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2095015097] [2023-11-12 02:23:44,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2095015097] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:23:44,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:23:44,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:23:44,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030827181] [2023-11-12 02:23:44,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:23:44,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:23:44,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:23:44,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:23:44,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:23:44,836 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:45,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:23:45,671 INFO L93 Difference]: Finished difference Result 78 states and 89 transitions. [2023-11-12 02:23:45,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:23:45,673 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-12 02:23:45,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:23:45,674 INFO L225 Difference]: With dead ends: 78 [2023-11-12 02:23:45,674 INFO L226 Difference]: Without dead ends: 78 [2023-11-12 02:23:45,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2023-11-12 02:23:45,676 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 141 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-12 02:23:45,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 51 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-12 02:23:45,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-11-12 02:23:45,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 62. [2023-11-12 02:23:45,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 56 states have (on average 1.3392857142857142) internal successors, (75), 61 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:45,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 75 transitions. [2023-11-12 02:23:45,681 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 75 transitions. Word has length 14 [2023-11-12 02:23:45,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:23:45,682 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 75 transitions. [2023-11-12 02:23:45,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:45,682 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 75 transitions. [2023-11-12 02:23:45,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-12 02:23:45,683 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:23:45,684 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:23:45,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-12 02:23:45,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:23:45,892 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-12 02:23:45,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:23:45,892 INFO L85 PathProgramCache]: Analyzing trace with hash -511715546, now seen corresponding path program 1 times [2023-11-12 02:23:45,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:23:45,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [922543207] [2023-11-12 02:23:45,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:45,893 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 [2023-11-12 02:23:45,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:23:45,894 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:23:45,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:23:45,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:45,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-12 02:23:45,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:23:45,992 INFO L351 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 7 [2023-11-12 02:23:46,296 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:23:46,297 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:23:47,772 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:23:47,772 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:23:47,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [922543207] [2023-11-12 02:23:47,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [922543207] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:23:47,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:23:47,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2023-11-12 02:23:47,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706218824] [2023-11-12 02:23:47,773 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:23:47,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-12 02:23:47,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:23:47,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-12 02:23:47,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2023-11-12 02:23:47,774 INFO L87 Difference]: Start difference. First operand 62 states and 75 transitions. Second operand has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:49,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:23:49,213 INFO L93 Difference]: Finished difference Result 66 states and 78 transitions. [2023-11-12 02:23:49,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 02:23:49,214 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-12 02:23:49,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:23:49,215 INFO L225 Difference]: With dead ends: 66 [2023-11-12 02:23:49,215 INFO L226 Difference]: Without dead ends: 62 [2023-11-12 02:23:49,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2023-11-12 02:23:49,216 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 56 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:23:49,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 96 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-12 02:23:49,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-11-12 02:23:49,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-11-12 02:23:49,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 56 states have (on average 1.3214285714285714) internal successors, (74), 61 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:49,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 74 transitions. [2023-11-12 02:23:49,221 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 74 transitions. Word has length 18 [2023-11-12 02:23:49,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:23:49,221 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 74 transitions. [2023-11-12 02:23:49,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:49,221 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 74 transitions. [2023-11-12 02:23:49,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-12 02:23:49,222 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:23:49,222 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1] [2023-11-12 02:23:49,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-11-12 02:23:49,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:23:49,423 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-12 02:23:49,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:23:49,424 INFO L85 PathProgramCache]: Analyzing trace with hash 302966996, now seen corresponding path program 2 times [2023-11-12 02:23:49,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:23:49,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [663512637] [2023-11-12 02:23:49,424 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:23:49,424 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 [2023-11-12 02:23:49,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:23:49,425 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:23:49,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:23:49,489 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-12 02:23:49,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:23:49,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-12 02:23:49,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:23:49,511 INFO L351 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 7 [2023-11-12 02:23:50,055 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:23:50,055 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:23:51,566 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:23:51,567 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:23:51,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [663512637] [2023-11-12 02:23:51,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [663512637] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:23:51,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:23:51,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-11-12 02:23:51,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627940479] [2023-11-12 02:23:51,568 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:23:51,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-12 02:23:51,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:23:51,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-12 02:23:51,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2023-11-12 02:23:51,569 INFO L87 Difference]: Start difference. First operand 62 states and 74 transitions. Second operand has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:54,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 02:23:57,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:23:57,058 INFO L93 Difference]: Finished difference Result 93 states and 111 transitions. [2023-11-12 02:23:57,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-12 02:23:57,060 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-11-12 02:23:57,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:23:57,061 INFO L225 Difference]: With dead ends: 93 [2023-11-12 02:23:57,061 INFO L226 Difference]: Without dead ends: 93 [2023-11-12 02:23:57,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=327, Invalid=665, Unknown=0, NotChecked=0, Total=992 [2023-11-12 02:23:57,065 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 179 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-12 02:23:57,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 134 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-12 02:23:57,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-11-12 02:23:57,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 86. [2023-11-12 02:23:57,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 80 states have (on average 1.3) internal successors, (104), 85 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:57,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 104 transitions. [2023-11-12 02:23:57,071 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 104 transitions. Word has length 22 [2023-11-12 02:23:57,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:23:57,071 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 104 transitions. [2023-11-12 02:23:57,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:57,072 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 104 transitions. [2023-11-12 02:23:57,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-12 02:23:57,073 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:23:57,073 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:23:57,084 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:23:57,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:23:57,276 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-12 02:23:57,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:23:57,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1609243625, now seen corresponding path program 2 times [2023-11-12 02:23:57,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:23:57,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [690792844] [2023-11-12 02:23:57,277 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:23:57,277 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:23:57,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:23:57,278 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:23:57,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:23:57,361 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-12 02:23:57,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:23:57,365 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-12 02:23:57,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:23:57,382 INFO L351 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 7 [2023-11-12 02:23:57,810 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 02:23:57,811 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:23:59,147 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 02:23:59,147 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:23:59,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [690792844] [2023-11-12 02:23:59,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [690792844] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:23:59,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:23:59,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-12 02:23:59,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20338792] [2023-11-12 02:23:59,148 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:23:59,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-12 02:23:59,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:23:59,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-12 02:23:59,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2023-11-12 02:23:59,150 INFO L87 Difference]: Start difference. First operand 86 states and 104 transitions. Second operand has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:04,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:24:04,452 INFO L93 Difference]: Finished difference Result 196 states and 228 transitions. [2023-11-12 02:24:04,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-12 02:24:04,454 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-11-12 02:24:04,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:24:04,455 INFO L225 Difference]: With dead ends: 196 [2023-11-12 02:24:04,455 INFO L226 Difference]: Without dead ends: 196 [2023-11-12 02:24:04,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=349, Invalid=841, Unknown=0, NotChecked=0, Total=1190 [2023-11-12 02:24:04,457 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 525 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-12 02:24:04,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [525 Valid, 66 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-12 02:24:04,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-11-12 02:24:04,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 128. [2023-11-12 02:24:04,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 122 states have (on average 1.360655737704918) internal successors, (166), 127 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:04,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 166 transitions. [2023-11-12 02:24:04,465 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 166 transitions. Word has length 22 [2023-11-12 02:24:04,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:24:04,465 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 166 transitions. [2023-11-12 02:24:04,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:04,466 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 166 transitions. [2023-11-12 02:24:04,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-12 02:24:04,467 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:24:04,467 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:24:04,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-11-12 02:24:04,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:24:04,679 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-12 02:24:04,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:04,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1653055190, now seen corresponding path program 1 times [2023-11-12 02:24:04,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:24:04,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [956205885] [2023-11-12 02:24:04,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:04,681 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 [2023-11-12 02:24:04,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:24:04,682 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:24:04,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:24:04,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:04,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-12 02:24:04,781 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:24:04,795 INFO L351 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 7 [2023-11-12 02:24:05,257 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 02:24:05,257 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:24:05,968 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 02:24:05,968 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:24:05,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [956205885] [2023-11-12 02:24:05,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [956205885] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:24:05,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:24:05,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 12 [2023-11-12 02:24:05,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380740754] [2023-11-12 02:24:05,970 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:24:05,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-12 02:24:05,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:24:05,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-12 02:24:05,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-11-12 02:24:05,972 INFO L87 Difference]: Start difference. First operand 128 states and 166 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:10,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:24:10,750 INFO L93 Difference]: Finished difference Result 184 states and 222 transitions. [2023-11-12 02:24:10,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-12 02:24:10,752 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-11-12 02:24:10,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:24:10,753 INFO L225 Difference]: With dead ends: 184 [2023-11-12 02:24:10,753 INFO L226 Difference]: Without dead ends: 184 [2023-11-12 02:24:10,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=325, Invalid=731, Unknown=0, NotChecked=0, Total=1056 [2023-11-12 02:24:10,755 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 454 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-12 02:24:10,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 75 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-12 02:24:10,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-11-12 02:24:10,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 109. [2023-11-12 02:24:10,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 104 states have (on average 1.3173076923076923) internal successors, (137), 108 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:10,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 137 transitions. [2023-11-12 02:24:10,763 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 137 transitions. Word has length 23 [2023-11-12 02:24:10,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:24:10,763 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 137 transitions. [2023-11-12 02:24:10,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:10,764 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 137 transitions. [2023-11-12 02:24:10,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-12 02:24:10,765 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:24:10,765 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-12 02:24:10,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-11-12 02:24:10,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:24:10,978 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-12 02:24:10,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:10,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1767403543, now seen corresponding path program 1 times [2023-11-12 02:24:10,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:24:10,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [297335792] [2023-11-12 02:24:10,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:10,980 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:24:10,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:24:10,981 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:24:10,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:24:11,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:11,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-12 02:24:11,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:24:11,160 INFO L351 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 7 [2023-11-12 02:24:11,869 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 02:24:11,869 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:24:12,673 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 02:24:12,673 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:24:12,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [297335792] [2023-11-12 02:24:12,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [297335792] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:24:12,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:24:12,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 12 [2023-11-12 02:24:12,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048122310] [2023-11-12 02:24:12,674 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:24:12,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-12 02:24:12,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:24:12,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-12 02:24:12,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-11-12 02:24:12,675 INFO L87 Difference]: Start difference. First operand 109 states and 137 transitions. Second operand has 13 states, 12 states have (on average 4.333333333333333) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:16,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:24:16,505 INFO L93 Difference]: Finished difference Result 189 states and 226 transitions. [2023-11-12 02:24:16,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-12 02:24:16,508 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.333333333333333) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-11-12 02:24:16,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:24:16,509 INFO L225 Difference]: With dead ends: 189 [2023-11-12 02:24:16,509 INFO L226 Difference]: Without dead ends: 189 [2023-11-12 02:24:16,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=228, Invalid=528, Unknown=0, NotChecked=0, Total=756 [2023-11-12 02:24:16,511 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 352 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:24:16,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 98 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-12 02:24:16,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-11-12 02:24:16,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 165. [2023-11-12 02:24:16,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 160 states have (on average 1.35) internal successors, (216), 164 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:16,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 216 transitions. [2023-11-12 02:24:16,519 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 216 transitions. Word has length 31 [2023-11-12 02:24:16,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:24:16,520 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 216 transitions. [2023-11-12 02:24:16,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.333333333333333) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:16,520 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 216 transitions. [2023-11-12 02:24:16,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-12 02:24:16,522 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:24:16,522 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-12 02:24:16,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-11-12 02:24:16,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:24:16,728 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-12 02:24:16,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:16,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1767403589, now seen corresponding path program 1 times [2023-11-12 02:24:16,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:24:16,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1463007396] [2023-11-12 02:24:16,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:16,729 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:24:16,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:24:16,731 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:24:16,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b610a0-7c9c-4e8e-aaf8-53ca66ff5ba8/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:24:16,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:16,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-12 02:24:16,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:24:16,922 INFO L351 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 7 [2023-11-12 02:24:17,805 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 02:24:17,806 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:24:19,473 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 02:24:19,473 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:24:19,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1463007396] [2023-11-12 02:24:19,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1463007396] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:24:19,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:24:19,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 18 [2023-11-12 02:24:19,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549011972] [2023-11-12 02:24:19,475 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:24:19,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-12 02:24:19,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:24:19,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-12 02:24:19,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2023-11-12 02:24:19,477 INFO L87 Difference]: Start difference. First operand 165 states and 216 transitions. Second operand has 18 states, 18 states have (on average 2.888888888888889) internal successors, (52), 18 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)