./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b 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_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 c9492eb5ff634b400a7a5ea3f7f2cefeb5465f9e5361bb81d240cec0c0c035af --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:14:28,789 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:14:28,914 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 22:14:28,926 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:14:28,926 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:14:28,974 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:14:28,975 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:14:28,976 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:14:28,977 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:14:28,982 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:14:28,983 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:14:28,983 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:14:28,984 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:14:28,985 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:14:28,986 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:14:28,986 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:14:28,987 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:14:28,987 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:14:28,988 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:14:28,988 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:14:28,989 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:14:28,989 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:14:28,990 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:14:28,990 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:14:28,991 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:14:28,991 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:14:28,992 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:14:28,993 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:14:28,993 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:14:28,994 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:14:28,999 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:14:28,999 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:14:28,999 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:14:29,000 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:14:29,001 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:14:29,001 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:14:29,001 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:14:29,001 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:14:29,002 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_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9492eb5ff634b400a7a5ea3f7f2cefeb5465f9e5361bb81d240cec0c0c035af [2023-11-06 22:14:29,303 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:14:29,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:14:29,351 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:14:29,352 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:14:29,353 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:14:29,354 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-3.i [2023-11-06 22:14:32,460 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:14:32,852 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:14:32,852 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-3.i [2023-11-06 22:14:32,875 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/data/8addd8e5d/705db56f49fb457a91b2b3256ff1cbf8/FLAG9f02297a3 [2023-11-06 22:14:32,890 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/data/8addd8e5d/705db56f49fb457a91b2b3256ff1cbf8 [2023-11-06 22:14:32,893 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:14:32,895 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:14:32,896 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:14:32,897 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:14:32,903 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:14:32,904 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:14:32" (1/1) ... [2023-11-06 22:14:32,905 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44947105 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:32, skipping insertion in model container [2023-11-06 22:14:32,905 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:14:32" (1/1) ... [2023-11-06 22:14:32,978 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:14:33,954 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:14:33,967 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) [2023-11-06 22:14:33,968 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@44373afc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:33, skipping insertion in model container [2023-11-06 22:14:33,968 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:14:33,969 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-06 22:14:33,971 INFO L158 Benchmark]: Toolchain (without parser) took 1074.82ms. Allocated memory was 138.4MB in the beginning and 174.1MB in the end (delta: 35.7MB). Free memory was 73.1MB in the beginning and 119.6MB in the end (delta: -46.5MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. [2023-11-06 22:14:33,971 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 138.4MB. Free memory is still 112.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:14:33,972 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1072.09ms. Allocated memory was 138.4MB in the beginning and 174.1MB in the end (delta: 35.7MB). Free memory was 72.9MB in the beginning and 119.6MB in the end (delta: -46.7MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. [2023-11-06 22:14:33,974 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 138.4MB. Free memory is still 112.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1072.09ms. Allocated memory was 138.4MB in the beginning and 174.1MB in the end (delta: 35.7MB). Free memory was 72.9MB in the beginning and 119.6MB in the end (delta: -46.7MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 734]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 c9492eb5ff634b400a7a5ea3f7f2cefeb5465f9e5361bb81d240cec0c0c035af --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:14:36,430 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:14:36,510 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-06 22:14:36,517 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:14:36,517 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:14:36,557 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:14:36,557 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:14:36,558 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:14:36,559 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:14:36,559 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:14:36,560 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:14:36,561 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:14:36,562 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:14:36,562 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:14:36,563 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:14:36,563 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:14:36,564 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:14:36,564 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:14:36,565 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:14:36,568 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:14:36,568 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:14:36,569 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:14:36,569 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:14:36,570 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 22:14:36,570 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 22:14:36,571 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:14:36,571 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:14:36,571 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:14:36,572 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:14:36,573 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:14:36,574 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:14:36,575 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:14:36,575 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:14:36,575 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:14:36,576 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-06 22:14:36,576 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 22:14:36,576 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:14:36,577 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:14:36,577 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:14:36,578 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-06 22:14:36,578 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:14:36,579 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_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9492eb5ff634b400a7a5ea3f7f2cefeb5465f9e5361bb81d240cec0c0c035af [2023-11-06 22:14:36,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:14:37,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:14:37,022 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:14:37,023 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:14:37,024 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:14:37,026 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-3.i [2023-11-06 22:14:40,357 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:14:40,827 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:14:40,828 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-3.i [2023-11-06 22:14:40,849 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/data/387ec9ba4/82cd5a6f7b044b11a766054d8df5288d/FLAG0f297f8cd [2023-11-06 22:14:40,864 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/data/387ec9ba4/82cd5a6f7b044b11a766054d8df5288d [2023-11-06 22:14:40,867 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:14:40,868 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:14:40,869 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:14:40,870 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:14:40,875 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:14:40,876 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:14:40" (1/1) ... [2023-11-06 22:14:40,877 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ae632cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:40, skipping insertion in model container [2023-11-06 22:14:40,877 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:14:40" (1/1) ... [2023-11-06 22:14:40,948 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:14:41,922 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:14:41,945 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-06 22:14:41,977 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:14:42,268 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:14:42,274 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:14:42,481 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:14:42,529 WARN L672 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:14:42,536 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:14:42,536 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:42 WrapperNode [2023-11-06 22:14:42,536 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:14:42,537 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:14:42,538 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:14:42,539 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:14:42,547 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:42" (1/1) ... [2023-11-06 22:14:42,622 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:42" (1/1) ... [2023-11-06 22:14:42,749 INFO L138 Inliner]: procedures = 180, calls = 624, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2517 [2023-11-06 22:14:42,750 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:14:42,751 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:14:42,751 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:14:42,752 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:14:42,761 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:42" (1/1) ... [2023-11-06 22:14:42,761 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:42" (1/1) ... [2023-11-06 22:14:42,798 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:42" (1/1) ... [2023-11-06 22:14:42,798 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:42" (1/1) ... [2023-11-06 22:14:42,943 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:42" (1/1) ... [2023-11-06 22:14:42,981 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:42" (1/1) ... [2023-11-06 22:14:42,990 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:42" (1/1) ... [2023-11-06 22:14:43,013 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:42" (1/1) ... [2023-11-06 22:14:43,040 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:14:43,041 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:14:43,041 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:14:43,042 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:14:43,043 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:42" (1/1) ... [2023-11-06 22:14:43,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:14:43,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:14:43,076 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:14:43,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:14:43,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-06 22:14:43,134 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2023-11-06 22:14:43,134 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2023-11-06 22:14:43,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-06 22:14:43,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-06 22:14:43,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-06 22:14:43,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-06 22:14:43,135 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-06 22:14:43,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:14:43,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:14:43,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 22:14:43,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:14:43,137 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-06 22:14:43,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 22:14:43,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:14:43,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-06 22:14:43,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 22:14:43,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:14:43,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:14:43,542 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:14:43,548 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:14:43,553 WARN L818 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-06 22:14:55,869 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:14:55,899 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:14:55,899 INFO L302 CfgBuilder]: Removed 168 assume(true) statements. [2023-11-06 22:14:55,904 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:14:55 BoogieIcfgContainer [2023-11-06 22:14:55,904 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:14:55,907 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:14:55,908 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:14:55,911 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:14:55,912 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:14:40" (1/3) ... [2023-11-06 22:14:55,912 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42027e72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:14:55, skipping insertion in model container [2023-11-06 22:14:55,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:42" (2/3) ... [2023-11-06 22:14:55,913 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42027e72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:14:55, skipping insertion in model container [2023-11-06 22:14:55,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:14:55" (3/3) ... [2023-11-06 22:14:55,915 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test10-3.i [2023-11-06 22:14:55,936 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:14:55,937 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1193 error locations. [2023-11-06 22:14:56,024 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:14:56,031 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;@47a9c4e3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:14:56,032 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1193 error locations. [2023-11-06 22:14:56,044 INFO L276 IsEmpty]: Start isEmpty. Operand has 2461 states, 1256 states have (on average 2.2038216560509554) internal successors, (2768), 2447 states have internal predecessors, (2768), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-06 22:14:56,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-06 22:14:56,051 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:14:56,052 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-06 22:14:56,052 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:14:56,060 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:56,061 INFO L85 PathProgramCache]: Analyzing trace with hash 66598, now seen corresponding path program 1 times [2023-11-06 22:14:56,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:14:56,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1946033978] [2023-11-06 22:14:56,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:56,076 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 [2023-11-06 22:14:56,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:14:56,087 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:14:56,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:14:56,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:56,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:14:56,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:14:56,465 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 [2023-11-06 22:14:56,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:14:56,478 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:14:56,479 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:14:56,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1946033978] [2023-11-06 22:14:56,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1946033978] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:56,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:56,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:14:56,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236314590] [2023-11-06 22:14:56,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:56,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:14:56,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:14:56,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:14:56,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:14:56,525 INFO L87 Difference]: Start difference. First operand has 2461 states, 1256 states have (on average 2.2038216560509554) internal successors, (2768), 2447 states have internal predecessors, (2768), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2023-11-06 22:15:02,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:15:02,758 INFO L93 Difference]: Finished difference Result 3314 states and 3513 transitions. [2023-11-06 22:15:02,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:15:02,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2023-11-06 22:15:02,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:15:02,802 INFO L225 Difference]: With dead ends: 3314 [2023-11-06 22:15:02,802 INFO L226 Difference]: Without dead ends: 3312 [2023-11-06 22:15:02,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:15:02,808 INFO L413 NwaCegarLoop]: 1686 mSDtfsCounter, 2338 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 1661 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2348 SdHoareTripleChecker+Valid, 2261 SdHoareTripleChecker+Invalid, 1684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:15:02,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2348 Valid, 2261 Invalid, 1684 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 1661 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-11-06 22:15:02,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3312 states. [2023-11-06 22:15:02,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3312 to 2609. [2023-11-06 22:15:02,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2609 states, 1428 states have (on average 2.0434173669467786) internal successors, (2918), 2593 states have internal predecessors, (2918), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-06 22:15:02,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2609 states to 2609 states and 2950 transitions. [2023-11-06 22:15:02,976 INFO L78 Accepts]: Start accepts. Automaton has 2609 states and 2950 transitions. Word has length 3 [2023-11-06 22:15:02,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:15:02,977 INFO L495 AbstractCegarLoop]: Abstraction has 2609 states and 2950 transitions. [2023-11-06 22:15:02,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2023-11-06 22:15:02,978 INFO L276 IsEmpty]: Start isEmpty. Operand 2609 states and 2950 transitions. [2023-11-06 22:15:02,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-06 22:15:02,978 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:15:02,978 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-06 22:15:02,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:15:03,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:15:03,192 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:15:03,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:15:03,192 INFO L85 PathProgramCache]: Analyzing trace with hash 66599, now seen corresponding path program 1 times [2023-11-06 22:15:03,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:15:03,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1634416385] [2023-11-06 22:15:03,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:03,194 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 [2023-11-06 22:15:03,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:15:03,200 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:15:03,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:15:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:03,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:15:03,431 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:15:03,451 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 [2023-11-06 22:15:03,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:15:03,466 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:15:03,466 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:15:03,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1634416385] [2023-11-06 22:15:03,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1634416385] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:15:03,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:15:03,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:15:03,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743022777] [2023-11-06 22:15:03,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:15:03,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:15:03,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:15:03,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:15:03,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:15:03,471 INFO L87 Difference]: Start difference. First operand 2609 states and 2950 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2023-11-06 22:15:12,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:15:12,853 INFO L93 Difference]: Finished difference Result 3773 states and 4214 transitions. [2023-11-06 22:15:12,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:15:12,854 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2023-11-06 22:15:12,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:15:12,876 INFO L225 Difference]: With dead ends: 3773 [2023-11-06 22:15:12,876 INFO L226 Difference]: Without dead ends: 3773 [2023-11-06 22:15:12,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:15:12,878 INFO L413 NwaCegarLoop]: 2062 mSDtfsCounter, 1256 mSDsluCounter, 1409 mSDsCounter, 0 mSdLazyCounter, 1695 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1260 SdHoareTripleChecker+Valid, 3471 SdHoareTripleChecker+Invalid, 1702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:15:12,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1260 Valid, 3471 Invalid, 1702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1695 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2023-11-06 22:15:12,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3773 states. [2023-11-06 22:15:12,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3773 to 3070. [2023-11-06 22:15:12,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3070 states, 1887 states have (on average 1.9994700582935878) internal successors, (3773), 3051 states have internal predecessors, (3773), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-06 22:15:12,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3070 states to 3070 states and 3811 transitions. [2023-11-06 22:15:12,992 INFO L78 Accepts]: Start accepts. Automaton has 3070 states and 3811 transitions. Word has length 3 [2023-11-06 22:15:12,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:15:12,993 INFO L495 AbstractCegarLoop]: Abstraction has 3070 states and 3811 transitions. [2023-11-06 22:15:12,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2023-11-06 22:15:12,993 INFO L276 IsEmpty]: Start isEmpty. Operand 3070 states and 3811 transitions. [2023-11-06 22:15:12,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-06 22:15:12,994 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:15:12,994 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:15:13,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:15:13,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:15:13,212 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:15:13,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:15:13,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1375609072, now seen corresponding path program 1 times [2023-11-06 22:15:13,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:15:13,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [598154837] [2023-11-06 22:15:13,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:13,215 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 [2023-11-06 22:15:13,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:15:13,217 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:15:13,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:15:13,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:13,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:15:13,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:15:13,478 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 [2023-11-06 22:15:13,493 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 [2023-11-06 22:15:13,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:15:13,569 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 22:15:13,592 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-06 22:15:13,593 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-06 22:15:13,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:15:13,618 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:15:13,618 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:15:13,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [598154837] [2023-11-06 22:15:13,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [598154837] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:15:13,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:15:13,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:15:13,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315895656] [2023-11-06 22:15:13,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:15:13,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:15:13,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:15:13,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:15:13,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:15:13,621 INFO L87 Difference]: Start difference. First operand 3070 states and 3811 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:15:28,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:15:28,934 INFO L93 Difference]: Finished difference Result 6081 states and 7008 transitions. [2023-11-06 22:15:28,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:15:28,935 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-06 22:15:28,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:15:28,970 INFO L225 Difference]: With dead ends: 6081 [2023-11-06 22:15:28,970 INFO L226 Difference]: Without dead ends: 6081 [2023-11-06 22:15:28,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:15:28,972 INFO L413 NwaCegarLoop]: 995 mSDtfsCounter, 5296 mSDsluCounter, 1630 mSDsCounter, 0 mSdLazyCounter, 3567 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5306 SdHoareTripleChecker+Valid, 2625 SdHoareTripleChecker+Invalid, 3609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 3567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:15:28,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5306 Valid, 2625 Invalid, 3609 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [42 Valid, 3567 Invalid, 0 Unknown, 0 Unchecked, 15.1s Time] [2023-11-06 22:15:28,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6081 states. [2023-11-06 22:15:29,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6081 to 3802. [2023-11-06 22:15:29,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3802 states, 2619 states have (on average 2.0278732340588013) internal successors, (5311), 3777 states have internal predecessors, (5311), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-06 22:15:29,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3802 states to 3802 states and 5361 transitions. [2023-11-06 22:15:29,099 INFO L78 Accepts]: Start accepts. Automaton has 3802 states and 5361 transitions. Word has length 7 [2023-11-06 22:15:29,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:15:29,100 INFO L495 AbstractCegarLoop]: Abstraction has 3802 states and 5361 transitions. [2023-11-06 22:15:29,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:15:29,101 INFO L276 IsEmpty]: Start isEmpty. Operand 3802 states and 5361 transitions. [2023-11-06 22:15:29,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-06 22:15:29,101 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:15:29,101 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:15:29,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:15:29,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:15:29,314 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:15:29,315 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:15:29,315 INFO L85 PathProgramCache]: Analyzing trace with hash -305791726, now seen corresponding path program 1 times [2023-11-06 22:15:29,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:15:29,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [121916031] [2023-11-06 22:15:29,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:29,316 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 [2023-11-06 22:15:29,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:15:29,317 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:15:29,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:15:29,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:29,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:15:29,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:15:29,608 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 [2023-11-06 22:15:29,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:15:29,624 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:15:29,624 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:15:29,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [121916031] [2023-11-06 22:15:29,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [121916031] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:15:29,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:15:29,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:15:29,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749994403] [2023-11-06 22:15:29,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:15:29,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:15:29,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:15:29,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:15:29,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:15:29,628 INFO L87 Difference]: Start difference. First operand 3802 states and 5361 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-11-06 22:15:34,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:15:34,737 INFO L93 Difference]: Finished difference Result 5036 states and 6908 transitions. [2023-11-06 22:15:34,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:15:34,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2023-11-06 22:15:34,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:15:34,762 INFO L225 Difference]: With dead ends: 5036 [2023-11-06 22:15:34,763 INFO L226 Difference]: Without dead ends: 5036 [2023-11-06 22:15:34,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:15:34,764 INFO L413 NwaCegarLoop]: 2399 mSDtfsCounter, 2014 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 1577 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2024 SdHoareTripleChecker+Valid, 3269 SdHoareTripleChecker+Invalid, 1679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:15:34,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2024 Valid, 3269 Invalid, 1679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1577 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-11-06 22:15:34,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5036 states. [2023-11-06 22:15:34,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5036 to 3711. [2023-11-06 22:15:34,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3711 states, 2619 states have (on average 1.946544482626957) internal successors, (5098), 3686 states have internal predecessors, (5098), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-06 22:15:34,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3711 states to 3711 states and 5148 transitions. [2023-11-06 22:15:34,898 INFO L78 Accepts]: Start accepts. Automaton has 3711 states and 5148 transitions. Word has length 8 [2023-11-06 22:15:34,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:15:34,899 INFO L495 AbstractCegarLoop]: Abstraction has 3711 states and 5148 transitions. [2023-11-06 22:15:34,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-11-06 22:15:34,899 INFO L276 IsEmpty]: Start isEmpty. Operand 3711 states and 5148 transitions. [2023-11-06 22:15:34,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-06 22:15:34,900 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:15:34,900 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:15:34,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:15:35,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:15:35,113 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:15:35,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:15:35,114 INFO L85 PathProgramCache]: Analyzing trace with hash -305791725, now seen corresponding path program 1 times [2023-11-06 22:15:35,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:15:35,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1182683097] [2023-11-06 22:15:35,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:35,115 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 [2023-11-06 22:15:35,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:15:35,117 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:15:35,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:15:35,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:35,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:15:35,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:15:35,354 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 [2023-11-06 22:15:35,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:15:35,385 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:15:35,385 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:15:35,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1182683097] [2023-11-06 22:15:35,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1182683097] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:15:35,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:15:35,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:15:35,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513626695] [2023-11-06 22:15:35,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:15:35,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:15:35,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:15:35,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:15:35,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:15:35,394 INFO L87 Difference]: Start difference. First operand 3711 states and 5148 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-11-06 22:15:43,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:15:43,259 INFO L93 Difference]: Finished difference Result 5464 states and 7544 transitions. [2023-11-06 22:15:43,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:15:43,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2023-11-06 22:15:43,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:15:43,284 INFO L225 Difference]: With dead ends: 5464 [2023-11-06 22:15:43,284 INFO L226 Difference]: Without dead ends: 5464 [2023-11-06 22:15:43,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:15:43,285 INFO L413 NwaCegarLoop]: 2779 mSDtfsCounter, 1389 mSDsluCounter, 1205 mSDsCounter, 0 mSdLazyCounter, 1670 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1393 SdHoareTripleChecker+Valid, 3984 SdHoareTripleChecker+Invalid, 1693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:15:43,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1393 Valid, 3984 Invalid, 1693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1670 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2023-11-06 22:15:43,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5464 states. [2023-11-06 22:15:43,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5464 to 4041. [2023-11-06 22:15:43,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4041 states, 2959 states have (on average 1.9324095978371072) internal successors, (5718), 4016 states have internal predecessors, (5718), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-06 22:15:43,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4041 states to 4041 states and 5768 transitions. [2023-11-06 22:15:43,384 INFO L78 Accepts]: Start accepts. Automaton has 4041 states and 5768 transitions. Word has length 8 [2023-11-06 22:15:43,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:15:43,384 INFO L495 AbstractCegarLoop]: Abstraction has 4041 states and 5768 transitions. [2023-11-06 22:15:43,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-11-06 22:15:43,384 INFO L276 IsEmpty]: Start isEmpty. Operand 4041 states and 5768 transitions. [2023-11-06 22:15:43,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-06 22:15:43,385 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:15:43,385 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:15:43,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:15:43,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:15:43,603 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr658REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:15:43,603 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:15:43,603 INFO L85 PathProgramCache]: Analyzing trace with hash -572019083, now seen corresponding path program 1 times [2023-11-06 22:15:43,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:15:43,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1721084422] [2023-11-06 22:15:43,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:43,604 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 [2023-11-06 22:15:43,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:15:43,605 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:15:43,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:15:43,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:43,845 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:15:43,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:15:43,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:15:43,870 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:15:43,871 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:15:43,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1721084422] [2023-11-06 22:15:43,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1721084422] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:15:43,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:15:43,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:15:43,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469517683] [2023-11-06 22:15:43,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:15:43,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:15:43,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:15:43,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:15:43,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:15:43,873 INFO L87 Difference]: Start difference. First operand 4041 states and 5768 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2023-11-06 22:15:43,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:15:43,938 INFO L93 Difference]: Finished difference Result 3981 states and 5682 transitions. [2023-11-06 22:15:43,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:15:43,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2023-11-06 22:15:43,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:15:43,955 INFO L225 Difference]: With dead ends: 3981 [2023-11-06 22:15:43,955 INFO L226 Difference]: Without dead ends: 3981 [2023-11-06 22:15:43,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:15:43,956 INFO L413 NwaCegarLoop]: 2428 mSDtfsCounter, 81 mSDsluCounter, 2356 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 4784 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:15:43,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 4784 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:15:43,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3981 states. [2023-11-06 22:15:44,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3981 to 3981. [2023-11-06 22:15:44,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3981 states, 2923 states have (on average 1.9267875470407116) internal successors, (5632), 3956 states have internal predecessors, (5632), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-06 22:15:44,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3981 states to 3981 states and 5682 transitions. [2023-11-06 22:15:44,048 INFO L78 Accepts]: Start accepts. Automaton has 3981 states and 5682 transitions. Word has length 11 [2023-11-06 22:15:44,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:15:44,048 INFO L495 AbstractCegarLoop]: Abstraction has 3981 states and 5682 transitions. [2023-11-06 22:15:44,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2023-11-06 22:15:44,049 INFO L276 IsEmpty]: Start isEmpty. Operand 3981 states and 5682 transitions. [2023-11-06 22:15:44,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-06 22:15:44,049 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:15:44,049 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:15:44,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:15:44,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:15:44,263 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr682REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:15:44,263 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:15:44,263 INFO L85 PathProgramCache]: Analyzing trace with hash 45529167, now seen corresponding path program 1 times [2023-11-06 22:15:44,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:15:44,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [356463917] [2023-11-06 22:15:44,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:44,264 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 [2023-11-06 22:15:44,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:15:44,265 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:15:44,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:15:44,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:44,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:15:44,477 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:15:44,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:15:44,497 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:15:44,497 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:15:44,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [356463917] [2023-11-06 22:15:44,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [356463917] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:15:44,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:15:44,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:15:44,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677996912] [2023-11-06 22:15:44,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:15:44,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:15:44,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:15:44,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:15:44,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:15:44,500 INFO L87 Difference]: Start difference. First operand 3981 states and 5682 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) [2023-11-06 22:15:44,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:15:44,685 INFO L93 Difference]: Finished difference Result 3953 states and 5626 transitions. [2023-11-06 22:15:44,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:15:44,686 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 [2023-11-06 22:15:44,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:15:44,709 INFO L225 Difference]: With dead ends: 3953 [2023-11-06 22:15:44,709 INFO L226 Difference]: Without dead ends: 3953 [2023-11-06 22:15:44,709 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 [2023-11-06 22:15:44,712 INFO L413 NwaCegarLoop]: 2383 mSDtfsCounter, 62 mSDsluCounter, 4732 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 7115 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:15:44,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 7115 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:15:44,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3953 states. [2023-11-06 22:15:44,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3953 to 3951. [2023-11-06 22:15:44,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3951 states, 2907 states have (on average 1.9174406604747163) internal successors, (5574), 3926 states have internal predecessors, (5574), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-06 22:15:44,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3951 states to 3951 states and 5624 transitions. [2023-11-06 22:15:44,821 INFO L78 Accepts]: Start accepts. Automaton has 3951 states and 5624 transitions. Word has length 13 [2023-11-06 22:15:44,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:15:44,824 INFO L495 AbstractCegarLoop]: Abstraction has 3951 states and 5624 transitions. [2023-11-06 22:15:44,825 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) [2023-11-06 22:15:44,825 INFO L276 IsEmpty]: Start isEmpty. Operand 3951 states and 5624 transitions. [2023-11-06 22:15:44,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-06 22:15:44,827 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:15:44,827 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:15:44,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:15:45,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:15:45,040 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr334REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:15:45,040 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:15:45,042 INFO L85 PathProgramCache]: Analyzing trace with hash 650290655, now seen corresponding path program 1 times [2023-11-06 22:15:45,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:15:45,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1268845081] [2023-11-06 22:15:45,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:45,043 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 [2023-11-06 22:15:45,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:15:45,044 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:15:45,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:15:45,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:45,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:15:45,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:15:45,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:15:45,365 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:15:45,365 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:15:45,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1268845081] [2023-11-06 22:15:45,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1268845081] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:15:45,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:15:45,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:15:45,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565598914] [2023-11-06 22:15:45,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:15:45,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:15:45,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:15:45,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:15:45,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:15:45,368 INFO L87 Difference]: Start difference. First operand 3951 states and 5624 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-11-06 22:15:45,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:15:45,455 INFO L93 Difference]: Finished difference Result 3819 states and 5366 transitions. [2023-11-06 22:15:45,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:15:45,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 20 [2023-11-06 22:15:45,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:15:45,466 INFO L225 Difference]: With dead ends: 3819 [2023-11-06 22:15:45,466 INFO L226 Difference]: Without dead ends: 3819 [2023-11-06 22:15:45,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:15:45,467 INFO L413 NwaCegarLoop]: 2350 mSDtfsCounter, 81 mSDsluCounter, 2278 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 4628 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:15:45,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 4628 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:15:45,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3819 states. [2023-11-06 22:15:45,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3819 to 3819. [2023-11-06 22:15:45,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3819 states, 2799 states have (on average 1.8992497320471597) internal successors, (5316), 3794 states have internal predecessors, (5316), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-06 22:15:45,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3819 states to 3819 states and 5366 transitions. [2023-11-06 22:15:45,535 INFO L78 Accepts]: Start accepts. Automaton has 3819 states and 5366 transitions. Word has length 20 [2023-11-06 22:15:45,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:15:45,535 INFO L495 AbstractCegarLoop]: Abstraction has 3819 states and 5366 transitions. [2023-11-06 22:15:45,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-11-06 22:15:45,536 INFO L276 IsEmpty]: Start isEmpty. Operand 3819 states and 5366 transitions. [2023-11-06 22:15:45,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-06 22:15:45,537 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:15:45,537 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:15:45,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:15:45,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:15:45,751 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:15:45,751 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:15:45,752 INFO L85 PathProgramCache]: Analyzing trace with hash 445820063, now seen corresponding path program 1 times [2023-11-06 22:15:45,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:15:45,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [367420307] [2023-11-06 22:15:45,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:45,753 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 [2023-11-06 22:15:45,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:15:45,754 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:15:45,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:15:46,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:46,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:15:46,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:15:46,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:15:46,085 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:15:46,086 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:15:46,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [367420307] [2023-11-06 22:15:46,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [367420307] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:15:46,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:15:46,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:15:46,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481385836] [2023-11-06 22:15:46,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:15:46,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:15:46,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:15:46,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:15:46,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:15:46,089 INFO L87 Difference]: Start difference. First operand 3819 states and 5366 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-11-06 22:15:46,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:15:46,153 INFO L93 Difference]: Finished difference Result 3759 states and 5280 transitions. [2023-11-06 22:15:46,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:15:46,154 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 20 [2023-11-06 22:15:46,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:15:46,163 INFO L225 Difference]: With dead ends: 3759 [2023-11-06 22:15:46,163 INFO L226 Difference]: Without dead ends: 3759 [2023-11-06 22:15:46,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:15:46,166 INFO L413 NwaCegarLoop]: 2307 mSDtfsCounter, 81 mSDsluCounter, 2235 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 4542 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:15:46,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 4542 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:15:46,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3759 states. [2023-11-06 22:15:46,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3759 to 3759. [2023-11-06 22:15:46,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3759 states, 2763 states have (on average 1.8928700687658342) internal successors, (5230), 3734 states have internal predecessors, (5230), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-06 22:15:46,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3759 states to 3759 states and 5280 transitions. [2023-11-06 22:15:46,268 INFO L78 Accepts]: Start accepts. Automaton has 3759 states and 5280 transitions. Word has length 20 [2023-11-06 22:15:46,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:15:46,269 INFO L495 AbstractCegarLoop]: Abstraction has 3759 states and 5280 transitions. [2023-11-06 22:15:46,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-11-06 22:15:46,269 INFO L276 IsEmpty]: Start isEmpty. Operand 3759 states and 5280 transitions. [2023-11-06 22:15:46,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-06 22:15:46,271 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:15:46,271 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:15:46,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:15:46,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:15:46,484 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr358REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:15:46,485 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:15:46,485 INFO L85 PathProgramCache]: Analyzing trace with hash -2135880199, now seen corresponding path program 1 times [2023-11-06 22:15:46,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:15:46,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [492325377] [2023-11-06 22:15:46,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:46,486 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 [2023-11-06 22:15:46,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:15:46,487 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:15:46,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:15:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:46,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:15:46,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:15:46,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:15:46,817 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:15:46,818 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:15:46,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [492325377] [2023-11-06 22:15:46,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [492325377] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:15:46,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:15:46,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:15:46,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574043115] [2023-11-06 22:15:46,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:15:46,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:15:46,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:15:46,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:15:46,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:15:46,820 INFO L87 Difference]: Start difference. First operand 3759 states and 5280 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2023-11-06 22:15:46,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:15:46,946 INFO L93 Difference]: Finished difference Result 3703 states and 5112 transitions. [2023-11-06 22:15:46,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:15:46,947 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 [2023-11-06 22:15:46,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:15:46,956 INFO L225 Difference]: With dead ends: 3703 [2023-11-06 22:15:46,956 INFO L226 Difference]: Without dead ends: 3703 [2023-11-06 22:15:46,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:15:46,957 INFO L413 NwaCegarLoop]: 2262 mSDtfsCounter, 62 mSDsluCounter, 4490 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 6752 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:15:46,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 6752 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:15:46,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3703 states. [2023-11-06 22:15:47,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3703 to 3697. [2023-11-06 22:15:47,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3697 states, 2715 states have (on average 1.8622467771639042) internal successors, (5056), 3672 states have internal predecessors, (5056), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-06 22:15:47,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3697 states to 3697 states and 5106 transitions. [2023-11-06 22:15:47,044 INFO L78 Accepts]: Start accepts. Automaton has 3697 states and 5106 transitions. Word has length 22 [2023-11-06 22:15:47,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:15:47,045 INFO L495 AbstractCegarLoop]: Abstraction has 3697 states and 5106 transitions. [2023-11-06 22:15:47,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2023-11-06 22:15:47,046 INFO L276 IsEmpty]: Start isEmpty. Operand 3697 states and 5106 transitions. [2023-11-06 22:15:47,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-06 22:15:47,051 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:15:47,051 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:15:47,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:15:47,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:15:47,270 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:15:47,271 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:15:47,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1063651591, now seen corresponding path program 1 times [2023-11-06 22:15:47,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:15:47,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1250830755] [2023-11-06 22:15:47,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:47,272 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 [2023-11-06 22:15:47,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:15:47,273 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:15:47,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:15:47,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:47,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:15:47,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:15:47,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:15:47,598 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:15:47,598 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:15:47,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1250830755] [2023-11-06 22:15:47,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1250830755] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:15:47,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:15:47,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:15:47,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424528632] [2023-11-06 22:15:47,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:15:47,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:15:47,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:15:47,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:15:47,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:15:47,601 INFO L87 Difference]: Start difference. First operand 3697 states and 5106 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2023-11-06 22:15:47,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:15:47,745 INFO L93 Difference]: Finished difference Result 3669 states and 5050 transitions. [2023-11-06 22:15:47,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:15:47,746 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 [2023-11-06 22:15:47,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:15:47,788 INFO L225 Difference]: With dead ends: 3669 [2023-11-06 22:15:47,788 INFO L226 Difference]: Without dead ends: 3669 [2023-11-06 22:15:47,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:15:47,789 INFO L413 NwaCegarLoop]: 2227 mSDtfsCounter, 62 mSDsluCounter, 4420 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 6647 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:15:47,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 6647 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:15:47,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3669 states. [2023-11-06 22:15:47,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3669 to 3667. [2023-11-06 22:15:47,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3667 states, 2699 states have (on average 1.8517969618377177) internal successors, (4998), 3642 states have internal predecessors, (4998), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-06 22:15:47,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3667 states to 3667 states and 5048 transitions. [2023-11-06 22:15:47,851 INFO L78 Accepts]: Start accepts. Automaton has 3667 states and 5048 transitions. Word has length 22 [2023-11-06 22:15:47,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:15:47,853 INFO L495 AbstractCegarLoop]: Abstraction has 3667 states and 5048 transitions. [2023-11-06 22:15:47,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2023-11-06 22:15:47,853 INFO L276 IsEmpty]: Start isEmpty. Operand 3667 states and 5048 transitions. [2023-11-06 22:15:47,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-06 22:15:47,856 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:15:47,856 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:15:47,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:15:48,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:15:48,069 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr696REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:15:48,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:15:48,069 INFO L85 PathProgramCache]: Analyzing trace with hash -209167555, now seen corresponding path program 1 times [2023-11-06 22:15:48,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:15:48,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1226046062] [2023-11-06 22:15:48,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:48,071 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 [2023-11-06 22:15:48,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:15:48,072 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:15:48,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:15:48,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:48,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:15:48,321 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:15:48,330 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 [2023-11-06 22:15:48,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:15:48,428 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:15:48,429 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:15:48,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1226046062] [2023-11-06 22:15:48,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1226046062] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:15:48,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:15:48,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:15:48,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334392402] [2023-11-06 22:15:48,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:15:48,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:15:48,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:15:48,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:15:48,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:15:48,432 INFO L87 Difference]: Start difference. First operand 3667 states and 5048 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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) [2023-11-06 22:15:54,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:15:54,796 INFO L93 Difference]: Finished difference Result 4291 states and 5586 transitions. [2023-11-06 22:15:54,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:15:54,796 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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 27 [2023-11-06 22:15:54,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:15:54,805 INFO L225 Difference]: With dead ends: 4291 [2023-11-06 22:15:54,805 INFO L226 Difference]: Without dead ends: 4291 [2023-11-06 22:15:54,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:15:54,806 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 2032 mSDsluCounter, 1835 mSDsCounter, 0 mSdLazyCounter, 2468 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2042 SdHoareTripleChecker+Valid, 3371 SdHoareTripleChecker+Invalid, 2481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:15:54,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2042 Valid, 3371 Invalid, 2481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2468 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-11-06 22:15:54,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4291 states. [2023-11-06 22:15:54,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4291 to 3663. [2023-11-06 22:15:54,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3663 states, 2699 states have (on average 1.848832901074472) internal successors, (4990), 3638 states have internal predecessors, (4990), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-06 22:15:54,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3663 states to 3663 states and 5040 transitions. [2023-11-06 22:15:54,870 INFO L78 Accepts]: Start accepts. Automaton has 3663 states and 5040 transitions. Word has length 27 [2023-11-06 22:15:54,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:15:54,871 INFO L495 AbstractCegarLoop]: Abstraction has 3663 states and 5040 transitions. [2023-11-06 22:15:54,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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) [2023-11-06 22:15:54,871 INFO L276 IsEmpty]: Start isEmpty. Operand 3663 states and 5040 transitions. [2023-11-06 22:15:54,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-06 22:15:54,872 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:15:54,872 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:15:54,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:15:55,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:15:55,084 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr697REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:15:55,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:15:55,084 INFO L85 PathProgramCache]: Analyzing trace with hash -209167554, now seen corresponding path program 1 times [2023-11-06 22:15:55,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:15:55,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1169247686] [2023-11-06 22:15:55,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:55,085 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 [2023-11-06 22:15:55,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:15:55,087 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:15:55,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:15:55,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:55,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:15:55,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:15:55,362 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 [2023-11-06 22:15:55,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:15:55,658 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:15:55,659 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:15:55,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1169247686] [2023-11-06 22:15:55,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1169247686] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:15:55,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:15:55,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:15:55,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360523531] [2023-11-06 22:15:55,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:15:55,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:15:55,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:15:55,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:15:55,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:15:55,663 INFO L87 Difference]: Start difference. First operand 3663 states and 5040 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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) [2023-11-06 22:16:05,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:05,235 INFO L93 Difference]: Finished difference Result 4756 states and 6225 transitions. [2023-11-06 22:16:05,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:16:05,235 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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 27 [2023-11-06 22:16:05,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:16:05,249 INFO L225 Difference]: With dead ends: 4756 [2023-11-06 22:16:05,250 INFO L226 Difference]: Without dead ends: 4756 [2023-11-06 22:16:05,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:16:05,251 INFO L413 NwaCegarLoop]: 1765 mSDtfsCounter, 1185 mSDsluCounter, 2384 mSDsCounter, 0 mSdLazyCounter, 2584 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1189 SdHoareTripleChecker+Valid, 4149 SdHoareTripleChecker+Invalid, 2587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:16:05,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1189 Valid, 4149 Invalid, 2587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2584 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2023-11-06 22:16:05,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4756 states. [2023-11-06 22:16:05,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4756 to 3699. [2023-11-06 22:16:05,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3699 states, 2735 states have (on average 1.8394881170018282) internal successors, (5031), 3674 states have internal predecessors, (5031), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-06 22:16:05,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3699 states to 3699 states and 5081 transitions. [2023-11-06 22:16:05,320 INFO L78 Accepts]: Start accepts. Automaton has 3699 states and 5081 transitions. Word has length 27 [2023-11-06 22:16:05,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:16:05,320 INFO L495 AbstractCegarLoop]: Abstraction has 3699 states and 5081 transitions. [2023-11-06 22:16:05,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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) [2023-11-06 22:16:05,321 INFO L276 IsEmpty]: Start isEmpty. Operand 3699 states and 5081 transitions. [2023-11-06 22:16:05,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-06 22:16:05,322 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:05,322 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:16:05,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:05,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:16:05,534 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr372REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:16:05,535 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:05,535 INFO L85 PathProgramCache]: Analyzing trace with hash 988185767, now seen corresponding path program 1 times [2023-11-06 22:16:05,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:16:05,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [235973519] [2023-11-06 22:16:05,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:05,536 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:16:05,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:16:05,537 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:16:05,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:16:05,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:05,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:16:05,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:05,888 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 [2023-11-06 22:16:05,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:16:05,995 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:16:05,995 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:16:05,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [235973519] [2023-11-06 22:16:05,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [235973519] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:16:05,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:16:05,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:16:05,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154925495] [2023-11-06 22:16:05,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:16:05,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:16:05,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:16:05,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:16:05,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:16:05,998 INFO L87 Difference]: Start difference. First operand 3699 states and 5081 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 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) [2023-11-06 22:16:12,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:12,155 INFO L93 Difference]: Finished difference Result 4901 states and 6683 transitions. [2023-11-06 22:16:12,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:16:12,156 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 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 36 [2023-11-06 22:16:12,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:16:12,166 INFO L225 Difference]: With dead ends: 4901 [2023-11-06 22:16:12,167 INFO L226 Difference]: Without dead ends: 4901 [2023-11-06 22:16:12,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:16:12,168 INFO L413 NwaCegarLoop]: 2191 mSDtfsCounter, 1799 mSDsluCounter, 2463 mSDsCounter, 0 mSdLazyCounter, 2720 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1809 SdHoareTripleChecker+Valid, 4654 SdHoareTripleChecker+Invalid, 2738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:16:12,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1809 Valid, 4654 Invalid, 2738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2720 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-11-06 22:16:12,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4901 states. [2023-11-06 22:16:12,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4901 to 3696. [2023-11-06 22:16:12,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3696 states, 2735 states have (on average 1.8314442413162706) internal successors, (5009), 3671 states have internal predecessors, (5009), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-06 22:16:12,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3696 states to 3696 states and 5059 transitions. [2023-11-06 22:16:12,236 INFO L78 Accepts]: Start accepts. Automaton has 3696 states and 5059 transitions. Word has length 36 [2023-11-06 22:16:12,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:16:12,237 INFO L495 AbstractCegarLoop]: Abstraction has 3696 states and 5059 transitions. [2023-11-06 22:16:12,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 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) [2023-11-06 22:16:12,237 INFO L276 IsEmpty]: Start isEmpty. Operand 3696 states and 5059 transitions. [2023-11-06 22:16:12,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-06 22:16:12,238 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:12,238 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:16:12,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:16:12,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:16:12,452 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr373REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:16:12,453 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:12,453 INFO L85 PathProgramCache]: Analyzing trace with hash 988185768, now seen corresponding path program 1 times [2023-11-06 22:16:12,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:16:12,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2085629491] [2023-11-06 22:16:12,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:12,453 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 [2023-11-06 22:16:12,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:16:12,456 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:16:12,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:16:12,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:12,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:16:12,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:12,779 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 [2023-11-06 22:16:13,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:16:13,042 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:16:13,042 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:16:13,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2085629491] [2023-11-06 22:16:13,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2085629491] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:16:13,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:16:13,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:16:13,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507336477] [2023-11-06 22:16:13,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:16:13,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:16:13,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:16:13,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:16:13,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:16:13,044 INFO L87 Difference]: Start difference. First operand 3696 states and 5059 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 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) [2023-11-06 22:16:22,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:22,343 INFO L93 Difference]: Finished difference Result 4979 states and 6675 transitions. [2023-11-06 22:16:22,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:16:22,344 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 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 36 [2023-11-06 22:16:22,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:16:22,355 INFO L225 Difference]: With dead ends: 4979 [2023-11-06 22:16:22,355 INFO L226 Difference]: Without dead ends: 4979 [2023-11-06 22:16:22,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:16:22,356 INFO L413 NwaCegarLoop]: 2570 mSDtfsCounter, 1154 mSDsluCounter, 2799 mSDsCounter, 0 mSdLazyCounter, 2825 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 5369 SdHoareTripleChecker+Invalid, 2828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:16:22,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1158 Valid, 5369 Invalid, 2828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2825 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2023-11-06 22:16:22,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4979 states. [2023-11-06 22:16:22,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4979 to 3696. [2023-11-06 22:16:22,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3696 states, 2735 states have (on average 1.8285191956124314) internal successors, (5001), 3671 states have internal predecessors, (5001), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-06 22:16:22,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3696 states to 3696 states and 5051 transitions. [2023-11-06 22:16:22,420 INFO L78 Accepts]: Start accepts. Automaton has 3696 states and 5051 transitions. Word has length 36 [2023-11-06 22:16:22,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:16:22,421 INFO L495 AbstractCegarLoop]: Abstraction has 3696 states and 5051 transitions. [2023-11-06 22:16:22,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 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) [2023-11-06 22:16:22,421 INFO L276 IsEmpty]: Start isEmpty. Operand 3696 states and 5051 transitions. [2023-11-06 22:16:22,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-06 22:16:22,422 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:22,422 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:16:22,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:16:22,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:16:22,640 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:16:22,640 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:22,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1781128551, now seen corresponding path program 1 times [2023-11-06 22:16:22,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:16:22,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [973116048] [2023-11-06 22:16:22,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:22,641 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 [2023-11-06 22:16:22,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:16:22,643 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:16:22,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:16:22,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:22,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:16:22,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:22,989 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 [2023-11-06 22:16:23,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:16:23,092 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:16:23,092 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:16:23,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [973116048] [2023-11-06 22:16:23,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [973116048] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:16:23,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:16:23,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:16:23,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465793368] [2023-11-06 22:16:23,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:16:23,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:16:23,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:16:23,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:16:23,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:16:23,095 INFO L87 Difference]: Start difference. First operand 3696 states and 5051 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 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) [2023-11-06 22:16:29,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:29,201 INFO L93 Difference]: Finished difference Result 4881 states and 6651 transitions. [2023-11-06 22:16:29,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:16:29,201 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 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 36 [2023-11-06 22:16:29,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:16:29,209 INFO L225 Difference]: With dead ends: 4881 [2023-11-06 22:16:29,209 INFO L226 Difference]: Without dead ends: 4881 [2023-11-06 22:16:29,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:16:29,210 INFO L413 NwaCegarLoop]: 2191 mSDtfsCounter, 1773 mSDsluCounter, 2429 mSDsCounter, 0 mSdLazyCounter, 2707 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1783 SdHoareTripleChecker+Valid, 4620 SdHoareTripleChecker+Invalid, 2721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:16:29,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1783 Valid, 4620 Invalid, 2721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2707 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-11-06 22:16:29,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4881 states. [2023-11-06 22:16:29,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4881 to 3692. [2023-11-06 22:16:29,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3692 states, 2735 states have (on average 1.8255941499085924) internal successors, (4993), 3667 states have internal predecessors, (4993), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-06 22:16:29,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3692 states to 3692 states and 5043 transitions. [2023-11-06 22:16:29,274 INFO L78 Accepts]: Start accepts. Automaton has 3692 states and 5043 transitions. Word has length 36 [2023-11-06 22:16:29,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:16:29,274 INFO L495 AbstractCegarLoop]: Abstraction has 3692 states and 5043 transitions. [2023-11-06 22:16:29,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 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) [2023-11-06 22:16:29,274 INFO L276 IsEmpty]: Start isEmpty. Operand 3692 states and 5043 transitions. [2023-11-06 22:16:29,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-06 22:16:29,275 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:29,275 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:16:29,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:16:29,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:16:29,488 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:16:29,489 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:29,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1781128552, now seen corresponding path program 1 times [2023-11-06 22:16:29,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:16:29,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1380361908] [2023-11-06 22:16:29,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:29,490 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 [2023-11-06 22:16:29,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:16:29,491 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:16:29,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:16:29,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:29,781 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:16:29,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:29,807 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 [2023-11-06 22:16:30,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:16:30,073 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:16:30,073 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:16:30,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1380361908] [2023-11-06 22:16:30,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1380361908] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:16:30,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:16:30,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:16:30,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963159426] [2023-11-06 22:16:30,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:16:30,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:16:30,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:16:30,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:16:30,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:16:30,075 INFO L87 Difference]: Start difference. First operand 3692 states and 5043 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 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) [2023-11-06 22:16:39,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:39,461 INFO L93 Difference]: Finished difference Result 4971 states and 6659 transitions. [2023-11-06 22:16:39,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:16:39,461 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 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 36 [2023-11-06 22:16:39,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:16:39,466 INFO L225 Difference]: With dead ends: 4971 [2023-11-06 22:16:39,466 INFO L226 Difference]: Without dead ends: 4971 [2023-11-06 22:16:39,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:16:39,467 INFO L413 NwaCegarLoop]: 2563 mSDtfsCounter, 1146 mSDsluCounter, 2762 mSDsCounter, 0 mSdLazyCounter, 2808 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1150 SdHoareTripleChecker+Valid, 5325 SdHoareTripleChecker+Invalid, 2811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:16:39,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1150 Valid, 5325 Invalid, 2811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2808 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2023-11-06 22:16:39,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4971 states. [2023-11-06 22:16:39,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4971 to 3688. [2023-11-06 22:16:39,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3688 states, 2735 states have (on average 1.8226691042047531) internal successors, (4985), 3663 states have internal predecessors, (4985), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-06 22:16:39,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3688 states to 3688 states and 5035 transitions. [2023-11-06 22:16:39,530 INFO L78 Accepts]: Start accepts. Automaton has 3688 states and 5035 transitions. Word has length 36 [2023-11-06 22:16:39,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:16:39,530 INFO L495 AbstractCegarLoop]: Abstraction has 3688 states and 5035 transitions. [2023-11-06 22:16:39,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 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) [2023-11-06 22:16:39,530 INFO L276 IsEmpty]: Start isEmpty. Operand 3688 states and 5035 transitions. [2023-11-06 22:16:39,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-06 22:16:39,531 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:39,531 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:16:39,544 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2023-11-06 22:16:39,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:16:39,745 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr704REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:16:39,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:39,746 INFO L85 PathProgramCache]: Analyzing trace with hash -599566665, now seen corresponding path program 1 times [2023-11-06 22:16:39,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:16:39,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [850117073] [2023-11-06 22:16:39,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:39,747 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 [2023-11-06 22:16:39,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:16:39,748 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:16:39,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-11-06 22:16:40,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:40,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:16:40,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:40,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:16:40,104 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:16:40,104 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:16:40,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [850117073] [2023-11-06 22:16:40,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [850117073] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:16:40,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:16:40,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:16:40,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584601974] [2023-11-06 22:16:40,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:16:40,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:16:40,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:16:40,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:16:40,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:16:40,111 INFO L87 Difference]: Start difference. First operand 3688 states and 5035 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2023-11-06 22:16:40,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:40,239 INFO L93 Difference]: Finished difference Result 3676 states and 5011 transitions. [2023-11-06 22:16:40,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:16:40,240 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 41 [2023-11-06 22:16:40,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:16:40,245 INFO L225 Difference]: With dead ends: 3676 [2023-11-06 22:16:40,245 INFO L226 Difference]: Without dead ends: 3676 [2023-11-06 22:16:40,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:16:40,247 INFO L413 NwaCegarLoop]: 2214 mSDtfsCounter, 39 mSDsluCounter, 4382 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 6596 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:16:40,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 6596 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:16:40,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3676 states. [2023-11-06 22:16:40,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3676 to 3676. [2023-11-06 22:16:40,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3676 states, 2723 states have (on average 1.8218876239441792) internal successors, (4961), 3651 states have internal predecessors, (4961), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-06 22:16:40,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3676 states to 3676 states and 5011 transitions. [2023-11-06 22:16:40,309 INFO L78 Accepts]: Start accepts. Automaton has 3676 states and 5011 transitions. Word has length 41 [2023-11-06 22:16:40,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:16:40,310 INFO L495 AbstractCegarLoop]: Abstraction has 3676 states and 5011 transitions. [2023-11-06 22:16:40,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2023-11-06 22:16:40,310 INFO L276 IsEmpty]: Start isEmpty. Operand 3676 states and 5011 transitions. [2023-11-06 22:16:40,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-06 22:16:40,311 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:40,311 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:16:40,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:40,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:16:40,524 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr704REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:16:40,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:40,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1578829059, now seen corresponding path program 1 times [2023-11-06 22:16:40,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:16:40,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1317713998] [2023-11-06 22:16:40,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:40,526 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 [2023-11-06 22:16:40,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:16:40,527 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:16:40,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-11-06 22:16:40,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:40,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:16:40,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:41,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:16:41,087 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:16:41,087 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:16:41,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1317713998] [2023-11-06 22:16:41,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1317713998] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:16:41,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:16:41,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:16:41,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175081593] [2023-11-06 22:16:41,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:16:41,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:16:41,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:16:41,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:16:41,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:16:41,090 INFO L87 Difference]: Start difference. First operand 3676 states and 5011 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 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) [2023-11-06 22:16:41,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:41,518 INFO L93 Difference]: Finished difference Result 5526 states and 7249 transitions. [2023-11-06 22:16:41,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:16:41,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-11-06 22:16:41,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:16:41,526 INFO L225 Difference]: With dead ends: 5526 [2023-11-06 22:16:41,526 INFO L226 Difference]: Without dead ends: 5526 [2023-11-06 22:16:41,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:16:41,527 INFO L413 NwaCegarLoop]: 2298 mSDtfsCounter, 1584 mSDsluCounter, 2060 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1593 SdHoareTripleChecker+Valid, 4358 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:16:41,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1593 Valid, 4358 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:16:41,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5526 states. [2023-11-06 22:16:41,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5526 to 4719. [2023-11-06 22:16:41,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4719 states, 3759 states have (on average 1.8050013301409948) internal successors, (6785), 4684 states have internal predecessors, (6785), 35 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-06 22:16:41,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4719 states to 4719 states and 6855 transitions. [2023-11-06 22:16:41,639 INFO L78 Accepts]: Start accepts. Automaton has 4719 states and 6855 transitions. Word has length 49 [2023-11-06 22:16:41,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:16:41,640 INFO L495 AbstractCegarLoop]: Abstraction has 4719 states and 6855 transitions. [2023-11-06 22:16:41,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 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) [2023-11-06 22:16:41,651 INFO L276 IsEmpty]: Start isEmpty. Operand 4719 states and 6855 transitions. [2023-11-06 22:16:41,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-06 22:16:41,652 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:41,652 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:16:41,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:41,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:16:41,865 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr437REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:16:41,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:41,865 INFO L85 PathProgramCache]: Analyzing trace with hash -435753951, now seen corresponding path program 1 times [2023-11-06 22:16:41,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:16:41,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1511232833] [2023-11-06 22:16:41,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:41,866 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 [2023-11-06 22:16:41,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:16:41,867 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:16:41,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-11-06 22:16:42,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:42,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:16:42,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:42,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:16:42,242 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:16:42,242 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:16:42,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1511232833] [2023-11-06 22:16:42,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1511232833] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:16:42,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:16:42,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:16:42,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306560719] [2023-11-06 22:16:42,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:16:42,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:16:42,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:16:42,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:16:42,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:16:42,244 INFO L87 Difference]: Start difference. First operand 4719 states and 6855 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:16:42,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:42,326 INFO L93 Difference]: Finished difference Result 4677 states and 6785 transitions. [2023-11-06 22:16:42,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:16:42,327 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-11-06 22:16:42,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:16:42,333 INFO L225 Difference]: With dead ends: 4677 [2023-11-06 22:16:42,333 INFO L226 Difference]: Without dead ends: 4677 [2023-11-06 22:16:42,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:16:42,334 INFO L413 NwaCegarLoop]: 2210 mSDtfsCounter, 41 mSDsluCounter, 4372 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 6582 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:16:42,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 6582 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:16:42,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4677 states. [2023-11-06 22:16:42,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4677 to 4677. [2023-11-06 22:16:42,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4677 states, 3717 states have (on average 1.8065644336830777) internal successors, (6715), 4642 states have internal predecessors, (6715), 35 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-06 22:16:42,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4677 states to 4677 states and 6785 transitions. [2023-11-06 22:16:42,400 INFO L78 Accepts]: Start accepts. Automaton has 4677 states and 6785 transitions. Word has length 52 [2023-11-06 22:16:42,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:16:42,401 INFO L495 AbstractCegarLoop]: Abstraction has 4677 states and 6785 transitions. [2023-11-06 22:16:42,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:16:42,401 INFO L276 IsEmpty]: Start isEmpty. Operand 4677 states and 6785 transitions. [2023-11-06 22:16:42,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-06 22:16:42,402 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:42,402 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:16:42,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:42,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:16:42,615 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:16:42,616 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:42,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1883919192, now seen corresponding path program 1 times [2023-11-06 22:16:42,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:16:42,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1853829690] [2023-11-06 22:16:42,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:42,617 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 [2023-11-06 22:16:42,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:16:42,619 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:16:42,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-11-06 22:16:43,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:43,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:16:43,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:43,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:16:43,126 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:16:43,126 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:16:43,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1853829690] [2023-11-06 22:16:43,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1853829690] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:16:43,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:16:43,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:16:43,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853285877] [2023-11-06 22:16:43,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:16:43,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:16:43,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:16:43,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:16:43,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:16:43,131 INFO L87 Difference]: Start difference. First operand 4677 states and 6785 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2023-11-06 22:16:43,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:43,233 INFO L93 Difference]: Finished difference Result 4659 states and 6755 transitions. [2023-11-06 22:16:43,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:16:43,233 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 55 [2023-11-06 22:16:43,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:16:43,240 INFO L225 Difference]: With dead ends: 4659 [2023-11-06 22:16:43,241 INFO L226 Difference]: Without dead ends: 4659 [2023-11-06 22:16:43,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:16:43,242 INFO L413 NwaCegarLoop]: 2206 mSDtfsCounter, 31 mSDsluCounter, 4374 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 6580 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:16:43,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 6580 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:16:43,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4659 states. [2023-11-06 22:16:43,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4659 to 4659. [2023-11-06 22:16:43,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4659 states, 3699 states have (on average 1.8072452014057854) internal successors, (6685), 4624 states have internal predecessors, (6685), 35 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-06 22:16:43,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4659 states to 4659 states and 6755 transitions. [2023-11-06 22:16:43,312 INFO L78 Accepts]: Start accepts. Automaton has 4659 states and 6755 transitions. Word has length 55 [2023-11-06 22:16:43,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:16:43,313 INFO L495 AbstractCegarLoop]: Abstraction has 4659 states and 6755 transitions. [2023-11-06 22:16:43,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2023-11-06 22:16:43,313 INFO L276 IsEmpty]: Start isEmpty. Operand 4659 states and 6755 transitions. [2023-11-06 22:16:43,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-06 22:16:43,314 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:43,314 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:16:43,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:43,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:16:43,528 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:16:43,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:43,528 INFO L85 PathProgramCache]: Analyzing trace with hash -2044700370, now seen corresponding path program 1 times [2023-11-06 22:16:43,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:16:43,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [70770392] [2023-11-06 22:16:43,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:43,529 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 [2023-11-06 22:16:43,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:16:43,531 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:16:43,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-11-06 22:16:43,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:43,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:16:43,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:43,911 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:16:43,911 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:16:43,912 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:16:43,919 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2023-11-06 22:16:43,982 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:16:43,983 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2023-11-06 22:16:44,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:16:44,004 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:16:44,005 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:16:44,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [70770392] [2023-11-06 22:16:44,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [70770392] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:16:44,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:16:44,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:16:44,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417961071] [2023-11-06 22:16:44,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:16:44,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:16:44,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:16:44,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:16:44,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:16:44,008 INFO L87 Difference]: Start difference. First operand 4659 states and 6755 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:16:46,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:46,428 INFO L93 Difference]: Finished difference Result 4628 states and 6723 transitions. [2023-11-06 22:16:46,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:16:46,429 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-11-06 22:16:46,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:16:46,434 INFO L225 Difference]: With dead ends: 4628 [2023-11-06 22:16:46,435 INFO L226 Difference]: Without dead ends: 4628 [2023-11-06 22:16:46,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:16:46,436 INFO L413 NwaCegarLoop]: 2218 mSDtfsCounter, 4 mSDsluCounter, 4135 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6353 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:16:46,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 6353 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-06 22:16:46,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4628 states. [2023-11-06 22:16:46,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4628 to 4625. [2023-11-06 22:16:46,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4625 states, 3665 states have (on average 1.8144611186903137) internal successors, (6650), 4590 states have internal predecessors, (6650), 35 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-06 22:16:46,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4625 states to 4625 states and 6720 transitions. [2023-11-06 22:16:46,506 INFO L78 Accepts]: Start accepts. Automaton has 4625 states and 6720 transitions. Word has length 60 [2023-11-06 22:16:46,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:16:46,506 INFO L495 AbstractCegarLoop]: Abstraction has 4625 states and 6720 transitions. [2023-11-06 22:16:46,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:16:46,506 INFO L276 IsEmpty]: Start isEmpty. Operand 4625 states and 6720 transitions. [2023-11-06 22:16:46,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-06 22:16:46,507 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:46,507 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:16:46,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:46,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:16:46,721 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr437REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:16:46,721 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:46,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1289637997, now seen corresponding path program 1 times [2023-11-06 22:16:46,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:16:46,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1024371524] [2023-11-06 22:16:46,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:46,722 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 [2023-11-06 22:16:46,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:16:46,724 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:16:46,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-11-06 22:16:47,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:47,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:16:47,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:47,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:16:47,534 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:16:47,534 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:16:47,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1024371524] [2023-11-06 22:16:47,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1024371524] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:16:47,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:16:47,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:16:47,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301941356] [2023-11-06 22:16:47,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:16:47,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:16:47,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:16:47,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:16:47,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:16:47,536 INFO L87 Difference]: Start difference. First operand 4625 states and 6720 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:16:47,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:47,796 INFO L93 Difference]: Finished difference Result 6462 states and 9030 transitions. [2023-11-06 22:16:47,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:16:47,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-11-06 22:16:47,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:16:47,808 INFO L225 Difference]: With dead ends: 6462 [2023-11-06 22:16:47,808 INFO L226 Difference]: Without dead ends: 6462 [2023-11-06 22:16:47,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:16:47,814 INFO L413 NwaCegarLoop]: 2496 mSDtfsCounter, 1277 mSDsluCounter, 2090 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1285 SdHoareTripleChecker+Valid, 4586 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:16:47,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1285 Valid, 4586 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:16:47,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6462 states. [2023-11-06 22:16:47,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6462 to 5725. [2023-11-06 22:16:47,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5725 states, 4757 states have (on average 1.7893630439352533) internal successors, (8512), 5679 states have internal predecessors, (8512), 46 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-06 22:16:47,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5725 states to 5725 states and 8604 transitions. [2023-11-06 22:16:47,898 INFO L78 Accepts]: Start accepts. Automaton has 5725 states and 8604 transitions. Word has length 60 [2023-11-06 22:16:47,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:16:47,898 INFO L495 AbstractCegarLoop]: Abstraction has 5725 states and 8604 transitions. [2023-11-06 22:16:47,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:16:47,899 INFO L276 IsEmpty]: Start isEmpty. Operand 5725 states and 8604 transitions. [2023-11-06 22:16:47,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-06 22:16:47,899 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:47,900 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:16:47,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:48,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:16:48,114 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr391REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:16:48,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:48,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1016546634, now seen corresponding path program 1 times [2023-11-06 22:16:48,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:16:48,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1300940394] [2023-11-06 22:16:48,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:48,115 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 [2023-11-06 22:16:48,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:16:48,117 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:16:48,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-11-06 22:16:48,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:48,656 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:16:48,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:48,696 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 [2023-11-06 22:16:48,702 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 [2023-11-06 22:16:49,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:16:49,353 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 22:16:49,367 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-06 22:16:49,368 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-06 22:16:49,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:16:49,383 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:16:49,383 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:16:49,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1300940394] [2023-11-06 22:16:49,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1300940394] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:16:49,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:16:49,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:16:49,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335173956] [2023-11-06 22:16:49,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:16:49,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:16:49,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:16:49,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:16:49,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:16:49,386 INFO L87 Difference]: Start difference. First operand 5725 states and 8604 transitions. Second operand has 4 states, 3 states have (on average 21.0) internal successors, (63), 4 states have internal predecessors, (63), 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) [2023-11-06 22:16:56,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:56,954 INFO L93 Difference]: Finished difference Result 8211 states and 12394 transitions. [2023-11-06 22:16:56,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:16:56,955 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 21.0) internal successors, (63), 4 states have internal predecessors, (63), 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 63 [2023-11-06 22:16:56,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:16:56,971 INFO L225 Difference]: With dead ends: 8211 [2023-11-06 22:16:56,972 INFO L226 Difference]: Without dead ends: 8211 [2023-11-06 22:16:56,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:16:56,973 INFO L413 NwaCegarLoop]: 1056 mSDtfsCounter, 2457 mSDsluCounter, 756 mSDsCounter, 0 mSdLazyCounter, 2076 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2471 SdHoareTripleChecker+Valid, 1812 SdHoareTripleChecker+Invalid, 2171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:16:56,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2471 Valid, 1812 Invalid, 2171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 2076 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2023-11-06 22:16:56,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8211 states. [2023-11-06 22:16:57,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8211 to 5483. [2023-11-06 22:16:57,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5483 states, 4599 states have (on average 1.7240704500978474) internal successors, (7929), 5437 states have internal predecessors, (7929), 46 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-06 22:16:57,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5483 states to 5483 states and 8021 transitions. [2023-11-06 22:16:57,049 INFO L78 Accepts]: Start accepts. Automaton has 5483 states and 8021 transitions. Word has length 63 [2023-11-06 22:16:57,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:16:57,050 INFO L495 AbstractCegarLoop]: Abstraction has 5483 states and 8021 transitions. [2023-11-06 22:16:57,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 21.0) internal successors, (63), 4 states have internal predecessors, (63), 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) [2023-11-06 22:16:57,050 INFO L276 IsEmpty]: Start isEmpty. Operand 5483 states and 8021 transitions. [2023-11-06 22:16:57,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-06 22:16:57,051 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:57,051 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:16:57,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:57,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:16:57,274 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr396REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:16:57,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:57,274 INFO L85 PathProgramCache]: Analyzing trace with hash -2012708672, now seen corresponding path program 1 times [2023-11-06 22:16:57,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:16:57,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1046808385] [2023-11-06 22:16:57,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:57,275 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 [2023-11-06 22:16:57,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:16:57,276 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:16:57,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-11-06 22:16:57,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:57,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:16:57,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:57,702 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 [2023-11-06 22:16:57,718 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-06 22:16:57,753 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-06 22:16:57,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:16:57,766 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:16:57,766 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:16:57,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1046808385] [2023-11-06 22:16:57,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1046808385] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:16:57,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:16:57,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:16:57,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006430247] [2023-11-06 22:16:57,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:16:57,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:16:57,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:16:57,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:16:57,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:16:57,769 INFO L87 Difference]: Start difference. First operand 5483 states and 8021 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 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) [2023-11-06 22:17:04,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:04,273 INFO L93 Difference]: Finished difference Result 5482 states and 8017 transitions. [2023-11-06 22:17:04,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:17:04,274 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 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) Word has length 68 [2023-11-06 22:17:04,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:04,279 INFO L225 Difference]: With dead ends: 5482 [2023-11-06 22:17:04,279 INFO L226 Difference]: Without dead ends: 5482 [2023-11-06 22:17:04,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:17:04,279 INFO L413 NwaCegarLoop]: 2133 mSDtfsCounter, 4 mSDsluCounter, 3521 mSDsCounter, 0 mSdLazyCounter, 2883 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5654 SdHoareTripleChecker+Invalid, 2884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:04,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 5654 Invalid, 2884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2883 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-11-06 22:17:04,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5482 states. [2023-11-06 22:17:04,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5482 to 5482. [2023-11-06 22:17:04,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5482 states, 4599 states have (on average 1.7232006958034356) internal successors, (7925), 5436 states have internal predecessors, (7925), 46 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-06 22:17:04,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5482 states to 5482 states and 8017 transitions. [2023-11-06 22:17:04,356 INFO L78 Accepts]: Start accepts. Automaton has 5482 states and 8017 transitions. Word has length 68 [2023-11-06 22:17:04,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:04,356 INFO L495 AbstractCegarLoop]: Abstraction has 5482 states and 8017 transitions. [2023-11-06 22:17:04,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 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) [2023-11-06 22:17:04,357 INFO L276 IsEmpty]: Start isEmpty. Operand 5482 states and 8017 transitions. [2023-11-06 22:17:04,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-06 22:17:04,358 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:04,358 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:04,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-11-06 22:17:04,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:17:04,596 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr397REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:17:04,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:04,597 INFO L85 PathProgramCache]: Analyzing trace with hash -2012708671, now seen corresponding path program 1 times [2023-11-06 22:17:04,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:17:04,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1838994548] [2023-11-06 22:17:04,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:04,598 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 [2023-11-06 22:17:04,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:17:04,599 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:17:04,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-11-06 22:17:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:05,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:17:05,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:17:05,014 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 [2023-11-06 22:17:05,039 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-06 22:17:05,048 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-06 22:17:05,103 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-11-06 22:17:05,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:17:05,127 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:17:05,127 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:17:05,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1838994548] [2023-11-06 22:17:05,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1838994548] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:17:05,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:17:05,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:17:05,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760133581] [2023-11-06 22:17:05,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:17:05,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:17:05,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:17:05,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:17:05,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:17:05,130 INFO L87 Difference]: Start difference. First operand 5482 states and 8017 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 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) [2023-11-06 22:17:14,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:14,120 INFO L93 Difference]: Finished difference Result 5481 states and 8013 transitions. [2023-11-06 22:17:14,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:17:14,121 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 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) Word has length 68 [2023-11-06 22:17:14,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:14,127 INFO L225 Difference]: With dead ends: 5481 [2023-11-06 22:17:14,127 INFO L226 Difference]: Without dead ends: 5481 [2023-11-06 22:17:14,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:17:14,128 INFO L413 NwaCegarLoop]: 2133 mSDtfsCounter, 2 mSDsluCounter, 3522 mSDsCounter, 0 mSdLazyCounter, 2880 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5655 SdHoareTripleChecker+Invalid, 2881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:14,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 5655 Invalid, 2881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2880 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2023-11-06 22:17:14,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5481 states. [2023-11-06 22:17:14,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5481 to 5481. [2023-11-06 22:17:14,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5481 states, 4595 states have (on average 1.7238302502720348) internal successors, (7921), 5435 states have internal predecessors, (7921), 46 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-06 22:17:14,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5481 states to 5481 states and 8013 transitions. [2023-11-06 22:17:14,199 INFO L78 Accepts]: Start accepts. Automaton has 5481 states and 8013 transitions. Word has length 68 [2023-11-06 22:17:14,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:14,199 INFO L495 AbstractCegarLoop]: Abstraction has 5481 states and 8013 transitions. [2023-11-06 22:17:14,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 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) [2023-11-06 22:17:14,199 INFO L276 IsEmpty]: Start isEmpty. Operand 5481 states and 8013 transitions. [2023-11-06 22:17:14,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-06 22:17:14,200 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:14,200 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:14,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-11-06 22:17:14,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:17:14,401 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:17:14,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:14,402 INFO L85 PathProgramCache]: Analyzing trace with hash -544834176, now seen corresponding path program 1 times [2023-11-06 22:17:14,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:17:14,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [523368612] [2023-11-06 22:17:14,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:14,403 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 [2023-11-06 22:17:14,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:17:14,404 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:17:14,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-11-06 22:17:14,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:14,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:17:14,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:17:14,848 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 [2023-11-06 22:17:14,863 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-06 22:17:14,887 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-06 22:17:14,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:17:14,897 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:17:14,897 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:17:14,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [523368612] [2023-11-06 22:17:14,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [523368612] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:17:14,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:17:14,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:17:14,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375038229] [2023-11-06 22:17:14,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:17:14,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:17:14,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:17:14,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:17:14,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:17:14,900 INFO L87 Difference]: Start difference. First operand 5481 states and 8013 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 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) [2023-11-06 22:17:21,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:21,317 INFO L93 Difference]: Finished difference Result 5480 states and 8010 transitions. [2023-11-06 22:17:21,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:17:21,318 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 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) Word has length 68 [2023-11-06 22:17:21,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:21,322 INFO L225 Difference]: With dead ends: 5480 [2023-11-06 22:17:21,323 INFO L226 Difference]: Without dead ends: 5480 [2023-11-06 22:17:21,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:17:21,323 INFO L413 NwaCegarLoop]: 2131 mSDtfsCounter, 4 mSDsluCounter, 3518 mSDsCounter, 0 mSdLazyCounter, 2880 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5649 SdHoareTripleChecker+Invalid, 2881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:21,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 5649 Invalid, 2881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2880 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-11-06 22:17:21,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5480 states. [2023-11-06 22:17:21,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5480 to 5480. [2023-11-06 22:17:21,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5480 states, 4595 states have (on average 1.723177366702938) internal successors, (7918), 5434 states have internal predecessors, (7918), 46 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-06 22:17:21,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5480 states to 5480 states and 8010 transitions. [2023-11-06 22:17:21,381 INFO L78 Accepts]: Start accepts. Automaton has 5480 states and 8010 transitions. Word has length 68 [2023-11-06 22:17:21,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:21,381 INFO L495 AbstractCegarLoop]: Abstraction has 5480 states and 8010 transitions. [2023-11-06 22:17:21,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 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) [2023-11-06 22:17:21,381 INFO L276 IsEmpty]: Start isEmpty. Operand 5480 states and 8010 transitions. [2023-11-06 22:17:21,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-06 22:17:21,382 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:21,382 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:21,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2023-11-06 22:17:21,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:17:21,583 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:17:21,583 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:21,583 INFO L85 PathProgramCache]: Analyzing trace with hash -544834175, now seen corresponding path program 1 times [2023-11-06 22:17:21,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:17:21,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1921106247] [2023-11-06 22:17:21,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:21,584 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 [2023-11-06 22:17:21,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:17:21,585 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:17:21,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-11-06 22:17:21,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:21,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:17:21,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:17:22,004 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 [2023-11-06 22:17:22,052 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-06 22:17:22,065 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-06 22:17:22,122 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-11-06 22:17:22,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:17:22,142 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:17:22,143 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:17:22,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1921106247] [2023-11-06 22:17:22,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1921106247] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:17:22,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:17:22,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:17:22,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860864064] [2023-11-06 22:17:22,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:17:22,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:17:22,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:17:22,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:17:22,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:17:22,144 INFO L87 Difference]: Start difference. First operand 5480 states and 8010 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 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) [2023-11-06 22:17:30,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:30,427 INFO L93 Difference]: Finished difference Result 5479 states and 8007 transitions. [2023-11-06 22:17:30,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:17:30,427 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 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) Word has length 68 [2023-11-06 22:17:30,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:30,432 INFO L225 Difference]: With dead ends: 5479 [2023-11-06 22:17:30,432 INFO L226 Difference]: Without dead ends: 5479 [2023-11-06 22:17:30,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:17:30,432 INFO L413 NwaCegarLoop]: 2131 mSDtfsCounter, 2 mSDsluCounter, 3519 mSDsCounter, 0 mSdLazyCounter, 2877 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5650 SdHoareTripleChecker+Invalid, 2878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:30,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 5650 Invalid, 2878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2877 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2023-11-06 22:17:30,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5479 states. [2023-11-06 22:17:30,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5479 to 5479. [2023-11-06 22:17:30,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5479 states, 4592 states have (on average 1.723649825783972) internal successors, (7915), 5433 states have internal predecessors, (7915), 46 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-06 22:17:30,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5479 states to 5479 states and 8007 transitions. [2023-11-06 22:17:30,482 INFO L78 Accepts]: Start accepts. Automaton has 5479 states and 8007 transitions. Word has length 68 [2023-11-06 22:17:30,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:30,482 INFO L495 AbstractCegarLoop]: Abstraction has 5479 states and 8007 transitions. [2023-11-06 22:17:30,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 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) [2023-11-06 22:17:30,483 INFO L276 IsEmpty]: Start isEmpty. Operand 5479 states and 8007 transitions. [2023-11-06 22:17:30,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-06 22:17:30,484 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:30,484 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:30,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-11-06 22:17:30,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:17:30,699 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr400REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:17:30,700 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:30,700 INFO L85 PathProgramCache]: Analyzing trace with hash 499611495, now seen corresponding path program 1 times [2023-11-06 22:17:30,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:17:30,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [309323072] [2023-11-06 22:17:30,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:30,700 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 [2023-11-06 22:17:30,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:17:30,701 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:17:30,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-11-06 22:17:31,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:31,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:17:31,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:17:31,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:17:31,218 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:17:31,218 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:17:31,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [309323072] [2023-11-06 22:17:31,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [309323072] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:17:31,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:17:31,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:17:31,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065339027] [2023-11-06 22:17:31,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:17:31,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:17:31,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:17:31,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:17:31,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:17:31,221 INFO L87 Difference]: Start difference. First operand 5479 states and 8007 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:17:31,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:31,305 INFO L93 Difference]: Finished difference Result 5482 states and 8016 transitions. [2023-11-06 22:17:31,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:17:31,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 76 [2023-11-06 22:17:31,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:31,317 INFO L225 Difference]: With dead ends: 5482 [2023-11-06 22:17:31,318 INFO L226 Difference]: Without dead ends: 5482 [2023-11-06 22:17:31,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:17:31,318 INFO L413 NwaCegarLoop]: 2130 mSDtfsCounter, 2 mSDsluCounter, 4252 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6382 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:31,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6382 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:17:31,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5482 states. [2023-11-06 22:17:31,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5482 to 5482. [2023-11-06 22:17:31,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5482 states, 4594 states have (on average 1.7235524597300826) internal successors, (7918), 5436 states have internal predecessors, (7918), 46 states have call successors, (46), 3 states have call predecessors, (46), 4 states have return successors, (52), 43 states have call predecessors, (52), 46 states have call successors, (52) [2023-11-06 22:17:31,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5482 states to 5482 states and 8016 transitions. [2023-11-06 22:17:31,404 INFO L78 Accepts]: Start accepts. Automaton has 5482 states and 8016 transitions. Word has length 76 [2023-11-06 22:17:31,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:31,404 INFO L495 AbstractCegarLoop]: Abstraction has 5482 states and 8016 transitions. [2023-11-06 22:17:31,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:17:31,405 INFO L276 IsEmpty]: Start isEmpty. Operand 5482 states and 8016 transitions. [2023-11-06 22:17:31,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-06 22:17:31,406 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:31,406 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:31,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2023-11-06 22:17:31,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:17:31,621 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr400REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:17:31,622 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:31,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1446477438, now seen corresponding path program 1 times [2023-11-06 22:17:31,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:17:31,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [318666675] [2023-11-06 22:17:31,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:31,623 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 [2023-11-06 22:17:31,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:17:31,624 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:17:31,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-11-06 22:17:32,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:32,051 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:17:32,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:17:32,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:17:32,081 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:17:32,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:17:32,206 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:17:32,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [318666675] [2023-11-06 22:17:32,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [318666675] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:17:32,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:17:32,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-06 22:17:32,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255355934] [2023-11-06 22:17:32,207 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:17:32,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:17:32,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:17:32,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:17:32,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:17:32,208 INFO L87 Difference]: Start difference. First operand 5482 states and 8016 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:17:32,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:32,469 INFO L93 Difference]: Finished difference Result 5494 states and 8038 transitions. [2023-11-06 22:17:32,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:17:32,470 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 77 [2023-11-06 22:17:32,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:32,484 INFO L225 Difference]: With dead ends: 5494 [2023-11-06 22:17:32,484 INFO L226 Difference]: Without dead ends: 5494 [2023-11-06 22:17:32,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:17:32,485 INFO L413 NwaCegarLoop]: 2130 mSDtfsCounter, 10 mSDsluCounter, 6373 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 8503 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:32,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 8503 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:17:32,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5494 states. [2023-11-06 22:17:32,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5494 to 5492. [2023-11-06 22:17:32,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5492 states, 4603 states have (on average 1.7234412339778404) internal successors, (7933), 5445 states have internal predecessors, (7933), 46 states have call successors, (46), 4 states have call predecessors, (46), 5 states have return successors, (52), 43 states have call predecessors, (52), 46 states have call successors, (52) [2023-11-06 22:17:32,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5492 states to 5492 states and 8031 transitions. [2023-11-06 22:17:32,564 INFO L78 Accepts]: Start accepts. Automaton has 5492 states and 8031 transitions. Word has length 77 [2023-11-06 22:17:32,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:32,565 INFO L495 AbstractCegarLoop]: Abstraction has 5492 states and 8031 transitions. [2023-11-06 22:17:32,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:17:32,565 INFO L276 IsEmpty]: Start isEmpty. Operand 5492 states and 8031 transitions. [2023-11-06 22:17:32,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-06 22:17:32,566 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:32,567 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:32,582 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Ended with exit code 0 [2023-11-06 22:17:32,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:17:32,782 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr400REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:17:32,782 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:32,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1122237145, now seen corresponding path program 2 times [2023-11-06 22:17:32,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:17:32,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [151153178] [2023-11-06 22:17:32,783 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:17:32,783 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 [2023-11-06 22:17:32,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:17:32,784 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:17:32,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-11-06 22:17:33,323 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:17:33,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:17:33,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:17:33,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:17:33,350 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 [2023-11-06 22:17:33,367 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:17:33,368 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:17:33,369 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:17:33,371 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2023-11-06 22:17:33,496 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-06 22:17:33,497 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-06 22:17:33,620 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 36 [2023-11-06 22:17:33,760 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 36 [2023-11-06 22:17:33,845 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:17:33,845 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2023-11-06 22:17:33,866 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:17:33,867 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:17:33,867 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:17:33,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [151153178] [2023-11-06 22:17:33,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [151153178] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:17:33,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:17:33,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:17:33,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153299397] [2023-11-06 22:17:33,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:17:33,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:17:33,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:17:33,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:17:33,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:17:33,869 INFO L87 Difference]: Start difference. First operand 5492 states and 8031 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:17:45,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:45,325 INFO L93 Difference]: Finished difference Result 5667 states and 7956 transitions. [2023-11-06 22:17:45,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:17:45,325 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 80 [2023-11-06 22:17:45,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:45,336 INFO L225 Difference]: With dead ends: 5667 [2023-11-06 22:17:45,336 INFO L226 Difference]: Without dead ends: 5667 [2023-11-06 22:17:45,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:17:45,337 INFO L413 NwaCegarLoop]: 1436 mSDtfsCounter, 2081 mSDsluCounter, 4643 mSDsCounter, 0 mSdLazyCounter, 4160 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2091 SdHoareTripleChecker+Valid, 6079 SdHoareTripleChecker+Invalid, 4190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 4160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:45,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2091 Valid, 6079 Invalid, 4190 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [30 Valid, 4160 Invalid, 0 Unknown, 0 Unchecked, 11.2s Time] [2023-11-06 22:17:45,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5667 states. [2023-11-06 22:17:45,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5667 to 5082. [2023-11-06 22:17:45,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5082 states, 4194 states have (on average 1.7484501669051025) internal successors, (7333), 5038 states have internal predecessors, (7333), 43 states have call successors, (43), 4 states have call predecessors, (43), 5 states have return successors, (48), 40 states have call predecessors, (48), 43 states have call successors, (48) [2023-11-06 22:17:45,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5082 states to 5082 states and 7424 transitions. [2023-11-06 22:17:45,409 INFO L78 Accepts]: Start accepts. Automaton has 5082 states and 7424 transitions. Word has length 80 [2023-11-06 22:17:45,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:45,410 INFO L495 AbstractCegarLoop]: Abstraction has 5082 states and 7424 transitions. [2023-11-06 22:17:45,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:17:45,410 INFO L276 IsEmpty]: Start isEmpty. Operand 5082 states and 7424 transitions. [2023-11-06 22:17:45,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-06 22:17:45,411 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:45,411 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:45,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2023-11-06 22:17:45,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:17:45,627 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:17:45,628 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:45,628 INFO L85 PathProgramCache]: Analyzing trace with hash 201523559, now seen corresponding path program 1 times [2023-11-06 22:17:45,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:17:45,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [7971661] [2023-11-06 22:17:45,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:45,629 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:17:45,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:17:45,629 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:17:45,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-11-06 22:17:46,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:46,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:17:46,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:17:46,170 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:17:46,171 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:17:46,354 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:17:46,354 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:17:46,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [7971661] [2023-11-06 22:17:46,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [7971661] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:17:46,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:17:46,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-06 22:17:46,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56127921] [2023-11-06 22:17:46,356 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:17:46,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:17:46,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:17:46,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:17:46,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:17:46,357 INFO L87 Difference]: Start difference. First operand 5082 states and 7424 transitions. Second operand has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 14 states have internal predecessors, (85), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:17:47,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:47,415 INFO L93 Difference]: Finished difference Result 5103 states and 7468 transitions. [2023-11-06 22:17:47,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-06 22:17:47,416 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 14 states have internal predecessors, (85), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 80 [2023-11-06 22:17:47,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:47,428 INFO L225 Difference]: With dead ends: 5103 [2023-11-06 22:17:47,429 INFO L226 Difference]: Without dead ends: 5099 [2023-11-06 22:17:47,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=257, Invalid=499, Unknown=0, NotChecked=0, Total=756 [2023-11-06 22:17:47,432 INFO L413 NwaCegarLoop]: 2133 mSDtfsCounter, 23 mSDsluCounter, 17009 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 19142 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:47,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 19142 Invalid, 299 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [33 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 22:17:47,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5099 states. [2023-11-06 22:17:47,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5099 to 5091. [2023-11-06 22:17:47,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5091 states, 4203 states have (on average 1.7475612657625506) internal successors, (7345), 5047 states have internal predecessors, (7345), 43 states have call successors, (43), 4 states have call predecessors, (43), 5 states have return successors, (48), 40 states have call predecessors, (48), 43 states have call successors, (48) [2023-11-06 22:17:47,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5091 states to 5091 states and 7436 transitions. [2023-11-06 22:17:47,518 INFO L78 Accepts]: Start accepts. Automaton has 5091 states and 7436 transitions. Word has length 80 [2023-11-06 22:17:47,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:47,519 INFO L495 AbstractCegarLoop]: Abstraction has 5091 states and 7436 transitions. [2023-11-06 22:17:47,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 14 states have internal predecessors, (85), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:17:47,519 INFO L276 IsEmpty]: Start isEmpty. Operand 5091 states and 7436 transitions. [2023-11-06 22:17:47,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-06 22:17:47,519 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:47,520 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:47,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2023-11-06 22:17:47,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:17:47,720 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:17:47,721 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:47,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1784738823, now seen corresponding path program 2 times [2023-11-06 22:17:47,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:17:47,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [457341928] [2023-11-06 22:17:47,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:17:47,722 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 [2023-11-06 22:17:47,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:17:47,722 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:17:47,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-11-06 22:17:48,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:17:48,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:17:48,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:17:48,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:17:48,650 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:17:48,650 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:17:49,260 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:17:49,260 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:17:49,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [457341928] [2023-11-06 22:17:49,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [457341928] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:17:49,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:17:49,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-11-06 22:17:49,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900895497] [2023-11-06 22:17:49,261 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:17:49,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-06 22:17:49,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:17:49,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-06 22:17:49,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2023-11-06 22:17:49,263 INFO L87 Difference]: Start difference. First operand 5091 states and 7436 transitions. Second operand has 26 states, 26 states have (on average 3.730769230769231) internal successors, (97), 26 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:17:52,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:52,254 INFO L93 Difference]: Finished difference Result 5133 states and 7534 transitions. [2023-11-06 22:17:52,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-11-06 22:17:52,255 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.730769230769231) internal successors, (97), 26 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 86 [2023-11-06 22:17:52,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:52,267 INFO L225 Difference]: With dead ends: 5133 [2023-11-06 22:17:52,267 INFO L226 Difference]: Without dead ends: 5129 [2023-11-06 22:17:52,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1025, Invalid=2281, Unknown=0, NotChecked=0, Total=3306 [2023-11-06 22:17:52,269 INFO L413 NwaCegarLoop]: 2139 mSDtfsCounter, 41 mSDsluCounter, 25599 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 27738 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:52,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 27738 Invalid, 893 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [45 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-06 22:17:52,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5129 states. [2023-11-06 22:17:52,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5129 to 5109. [2023-11-06 22:17:52,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5109 states, 4221 states have (on average 1.7457948353470742) internal successors, (7369), 5065 states have internal predecessors, (7369), 43 states have call successors, (43), 4 states have call predecessors, (43), 5 states have return successors, (48), 40 states have call predecessors, (48), 43 states have call successors, (48) [2023-11-06 22:17:52,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5109 states to 5109 states and 7460 transitions. [2023-11-06 22:17:52,344 INFO L78 Accepts]: Start accepts. Automaton has 5109 states and 7460 transitions. Word has length 86 [2023-11-06 22:17:52,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:52,345 INFO L495 AbstractCegarLoop]: Abstraction has 5109 states and 7460 transitions. [2023-11-06 22:17:52,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.730769230769231) internal successors, (97), 26 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:17:52,345 INFO L276 IsEmpty]: Start isEmpty. Operand 5109 states and 7460 transitions. [2023-11-06 22:17:52,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-06 22:17:52,346 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:52,347 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:52,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2023-11-06 22:17:52,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:17:52,565 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:17:52,565 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:52,565 INFO L85 PathProgramCache]: Analyzing trace with hash 734884167, now seen corresponding path program 3 times [2023-11-06 22:17:52,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:17:52,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [561128770] [2023-11-06 22:17:52,566 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:17:52,566 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 [2023-11-06 22:17:52,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:17:52,568 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:17:52,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-11-06 22:17:54,128 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2023-11-06 22:17:54,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:17:54,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-06 22:17:54,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:17:54,667 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:17:54,667 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:17:57,222 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:17:57,222 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:17:57,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [561128770] [2023-11-06 22:17:57,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [561128770] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:17:57,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:17:57,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2023-11-06 22:17:57,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826848913] [2023-11-06 22:17:57,223 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:17:57,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-06 22:17:57,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:17:57,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-06 22:17:57,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=672, Invalid=1778, Unknown=0, NotChecked=0, Total=2450 [2023-11-06 22:17:57,227 INFO L87 Difference]: Start difference. First operand 5109 states and 7460 transitions. Second operand has 50 states, 50 states have (on average 2.42) internal successors, (121), 50 states have internal predecessors, (121), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:18:11,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:11,549 INFO L93 Difference]: Finished difference Result 5193 states and 7727 transitions. [2023-11-06 22:18:11,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2023-11-06 22:18:11,550 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.42) internal successors, (121), 50 states have internal predecessors, (121), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 98 [2023-11-06 22:18:11,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:11,561 INFO L225 Difference]: With dead ends: 5193 [2023-11-06 22:18:11,561 INFO L226 Difference]: Without dead ends: 5187 [2023-11-06 22:18:11,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=2906, Invalid=6214, Unknown=0, NotChecked=0, Total=9120 [2023-11-06 22:18:11,565 INFO L413 NwaCegarLoop]: 2149 mSDtfsCounter, 108 mSDsluCounter, 49311 mSDsCounter, 0 mSdLazyCounter, 3578 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 51460 SdHoareTripleChecker+Invalid, 3681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 3578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:18:11,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 51460 Invalid, 3681 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [103 Valid, 3578 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-11-06 22:18:11,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5187 states. [2023-11-06 22:18:11,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5187 to 5145. [2023-11-06 22:18:11,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5145 states, 4257 states have (on average 1.7423067888184167) internal successors, (7417), 5101 states have internal predecessors, (7417), 43 states have call successors, (43), 4 states have call predecessors, (43), 5 states have return successors, (48), 40 states have call predecessors, (48), 43 states have call successors, (48) [2023-11-06 22:18:11,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5145 states to 5145 states and 7508 transitions. [2023-11-06 22:18:11,661 INFO L78 Accepts]: Start accepts. Automaton has 5145 states and 7508 transitions. Word has length 98 [2023-11-06 22:18:11,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:11,661 INFO L495 AbstractCegarLoop]: Abstraction has 5145 states and 7508 transitions. [2023-11-06 22:18:11,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.42) internal successors, (121), 50 states have internal predecessors, (121), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:18:11,662 INFO L276 IsEmpty]: Start isEmpty. Operand 5145 states and 7508 transitions. [2023-11-06 22:18:11,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-06 22:18:11,663 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:11,663 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:11,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:11,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:18:11,879 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:18:11,880 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:11,880 INFO L85 PathProgramCache]: Analyzing trace with hash 576660199, now seen corresponding path program 4 times [2023-11-06 22:18:11,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:18:11,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1245253322] [2023-11-06 22:18:11,881 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:18:11,881 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 [2023-11-06 22:18:11,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:18:11,883 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:18:11,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2023-11-06 22:18:12,774 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:18:12,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:18:12,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 825 conjuncts, 58 conjunts are in the unsatisfiable core [2023-11-06 22:18:12,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:12,827 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 [2023-11-06 22:18:12,987 INFO L322 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-06 22:18:12,987 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-06 22:18:13,027 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-06 22:18:13,124 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-11-06 22:18:14,284 INFO L322 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-06 22:18:14,285 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-06 22:18:14,330 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2023-11-06 22:18:14,372 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-06 22:18:14,373 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:18:14,888 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2838 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_2838) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) (_ bv0 1))) is different from false [2023-11-06 22:18:14,891 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:18:14,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1245253322] [2023-11-06 22:18:14,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1245253322] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:18:14,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1593033030] [2023-11-06 22:18:14,892 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:18:14,892 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-06 22:18:14,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 [2023-11-06 22:18:14,899 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-06 22:18:14,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0189038b-42fa-457a-8a48-2a08546bbe2b/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2023-11-06 22:18:16,680 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:18:16,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:18:16,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 825 conjuncts, 61 conjunts are in the unsatisfiable core [2023-11-06 22:18:16,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:16,753 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 [2023-11-06 22:18:16,894 INFO L322 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-06 22:18:16,894 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-06 22:18:16,925 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-06 22:18:16,995 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12