./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff 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_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bd259ad1e1e9b7f6e2ebd2858541cc7ac07d30ed5cbee2b9de70c1db1c5b700e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:49:46,840 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:49:46,963 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:49:46,969 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:49:46,970 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:49:47,007 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:49:47,009 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:49:47,009 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:49:47,010 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:49:47,016 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:49:47,017 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:49:47,018 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:49:47,018 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:49:47,020 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:49:47,020 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:49:47,021 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:49:47,021 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:49:47,022 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:49:47,022 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:49:47,022 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:49:47,023 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:49:47,023 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:49:47,024 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:49:47,024 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:49:47,025 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:49:47,025 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:49:47,026 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:49:47,026 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:49:47,027 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:49:47,027 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:49:47,029 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:49:47,029 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:49:47,029 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:49:47,029 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:49:47,030 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:49:47,030 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:49:47,030 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:49:47,030 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:49:47,031 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_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd259ad1e1e9b7f6e2ebd2858541cc7ac07d30ed5cbee2b9de70c1db1c5b700e [2023-11-19 07:49:47,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:49:47,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:49:47,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:49:47,398 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:49:47,400 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:49:47,402 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-3.i [2023-11-19 07:49:50,465 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:49:50,884 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:49:50,885 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-3.i [2023-11-19 07:49:50,907 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/data/f5ccd272e/3f61fd3bd640471b9ded52b0496f76df/FLAGeb5eb3a96 [2023-11-19 07:49:50,923 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/data/f5ccd272e/3f61fd3bd640471b9ded52b0496f76df [2023-11-19 07:49:50,925 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:49:50,927 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:49:50,929 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:49:50,929 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:49:50,935 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:49:50,936 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:49:50" (1/1) ... [2023-11-19 07:49:50,937 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5019b8fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:50, skipping insertion in model container [2023-11-19 07:49:50,937 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:49:50" (1/1) ... [2023-11-19 07:49:51,020 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:49:51,748 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:49:51,761 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) [2023-11-19 07:49:51,762 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@10f7be4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:51, skipping insertion in model container [2023-11-19 07:49:51,762 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:49:51,762 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 07:49:51,765 INFO L158 Benchmark]: Toolchain (without parser) took 836.48ms. Allocated memory is still 125.8MB. Free memory was 78.2MB in the beginning and 56.1MB in the end (delta: 22.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 07:49:51,766 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 125.8MB. Free memory was 98.9MB in the beginning and 98.9MB in the end (delta: 24.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:49:51,767 INFO L158 Benchmark]: CACSL2BoogieTranslator took 833.58ms. Allocated memory is still 125.8MB. Free memory was 78.2MB in the beginning and 56.1MB in the end (delta: 22.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 07:49:51,769 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 125.8MB. Free memory was 98.9MB in the beginning and 98.9MB in the end (delta: 24.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 833.58ms. Allocated memory is still 125.8MB. Free memory was 78.2MB in the beginning and 56.1MB in the end (delta: 22.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 752]: 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_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bd259ad1e1e9b7f6e2ebd2858541cc7ac07d30ed5cbee2b9de70c1db1c5b700e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:49:54,369 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:49:54,498 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-19 07:49:54,507 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:49:54,508 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:49:54,553 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:49:54,554 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:49:54,555 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:49:54,556 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:49:54,561 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:49:54,562 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:49:54,562 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:49:54,563 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:49:54,565 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:49:54,565 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:49:54,566 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:49:54,566 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:49:54,567 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:49:54,567 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:49:54,568 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:49:54,569 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:49:54,569 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:49:54,570 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:49:54,570 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 07:49:54,571 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 07:49:54,571 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:49:54,572 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:49:54,572 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:49:54,573 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:49:54,574 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:49:54,575 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:49:54,575 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:49:54,576 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:49:54,576 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:49:54,577 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-19 07:49:54,577 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 07:49:54,577 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:49:54,578 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:49:54,578 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:49:54,579 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-19 07:49:54,579 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:49:54,580 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_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd259ad1e1e9b7f6e2ebd2858541cc7ac07d30ed5cbee2b9de70c1db1c5b700e [2023-11-19 07:49:55,023 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:49:55,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:49:55,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:49:55,063 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:49:55,064 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:49:55,065 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-3.i [2023-11-19 07:49:58,334 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:49:58,734 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:49:58,735 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-3.i [2023-11-19 07:49:58,771 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/data/dd89bc001/dea6dc8f2e364eaab0db26fc2eb6b0b6/FLAGaa0bb8471 [2023-11-19 07:49:58,791 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/data/dd89bc001/dea6dc8f2e364eaab0db26fc2eb6b0b6 [2023-11-19 07:49:58,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:49:58,798 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:49:58,802 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:49:58,803 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:49:58,809 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:49:58,810 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:49:58" (1/1) ... [2023-11-19 07:49:58,811 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c144c98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:58, skipping insertion in model container [2023-11-19 07:49:58,811 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:49:58" (1/1) ... [2023-11-19 07:49:58,910 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:49:59,738 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:49:59,759 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 07:49:59,777 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:49:59,883 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:49:59,889 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:50:00,045 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:50:00,097 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:50:00,097 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:00 WrapperNode [2023-11-19 07:50:00,097 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:50:00,099 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:50:00,099 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:50:00,099 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:50:00,107 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:00" (1/1) ... [2023-11-19 07:50:00,163 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:00" (1/1) ... [2023-11-19 07:50:00,266 INFO L138 Inliner]: procedures = 180, calls = 449, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1487 [2023-11-19 07:50:00,267 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:50:00,267 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:50:00,268 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:50:00,268 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:50:00,278 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:00" (1/1) ... [2023-11-19 07:50:00,278 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:00" (1/1) ... [2023-11-19 07:50:00,290 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:00" (1/1) ... [2023-11-19 07:50:00,291 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:00" (1/1) ... [2023-11-19 07:50:00,354 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:00" (1/1) ... [2023-11-19 07:50:00,368 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:00" (1/1) ... [2023-11-19 07:50:00,374 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:00" (1/1) ... [2023-11-19 07:50:00,383 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:00" (1/1) ... [2023-11-19 07:50:00,396 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:50:00,397 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:50:00,397 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:50:00,397 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:50:00,398 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:00" (1/1) ... [2023-11-19 07:50:00,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:50:00,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:00,428 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:50:00,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:50:00,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-19 07:50:00,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 07:50:00,478 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 07:50:00,479 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 07:50:00,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 07:50:00,479 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 07:50:00,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:50:00,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:50:00,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:50:00,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 07:50:00,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:50:00,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:50:00,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 07:50:00,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 07:50:00,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:50:00,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:50:00,756 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:50:00,758 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:50:00,762 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-19 07:50:07,792 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:50:07,817 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:50:07,818 INFO L302 CfgBuilder]: Removed 77 assume(true) statements. [2023-11-19 07:50:07,832 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:50:07 BoogieIcfgContainer [2023-11-19 07:50:07,833 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:50:07,836 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:50:07,836 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:50:07,839 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:50:07,840 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:49:58" (1/3) ... [2023-11-19 07:50:07,841 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ab60a28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:50:07, skipping insertion in model container [2023-11-19 07:50:07,841 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:00" (2/3) ... [2023-11-19 07:50:07,843 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ab60a28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:50:07, skipping insertion in model container [2023-11-19 07:50:07,845 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:50:07" (3/3) ... [2023-11-19 07:50:07,847 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test4-3.i [2023-11-19 07:50:07,868 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:50:07,868 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 851 error locations. [2023-11-19 07:50:07,968 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:50:07,975 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;@76d78ef2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:50:07,976 INFO L358 AbstractCegarLoop]: Starting to check reachability of 851 error locations. [2023-11-19 07:50:07,989 INFO L276 IsEmpty]: Start isEmpty. Operand has 1663 states, 799 states have (on average 2.262828535669587) internal successors, (1808), 1654 states have internal predecessors, (1808), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 07:50:07,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 07:50:07,997 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:07,998 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:50:07,999 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-19 07:50:08,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:08,006 INFO L85 PathProgramCache]: Analyzing trace with hash 37287509, now seen corresponding path program 1 times [2023-11-19 07:50:08,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:50:08,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [455381635] [2023-11-19 07:50:08,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:08,019 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 [2023-11-19 07:50:08,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:50:08,022 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:50:08,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:50:08,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:08,243 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:50:08,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:08,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:08,271 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:50:08,272 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:50:08,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [455381635] [2023-11-19 07:50:08,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [455381635] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:08,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:08,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:50:08,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38442984] [2023-11-19 07:50:08,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:08,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:50:08,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:50:08,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:50:08,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:50:08,358 INFO L87 Difference]: Start difference. First operand has 1663 states, 799 states have (on average 2.262828535669587) internal successors, (1808), 1654 states have internal predecessors, (1808), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-11-19 07:50:08,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:08,480 INFO L93 Difference]: Finished difference Result 1644 states and 1735 transitions. [2023-11-19 07:50:08,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:50:08,482 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2023-11-19 07:50:08,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:08,512 INFO L225 Difference]: With dead ends: 1644 [2023-11-19 07:50:08,512 INFO L226 Difference]: Without dead ends: 1642 [2023-11-19 07:50:08,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:50:08,518 INFO L413 NwaCegarLoop]: 1735 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1735 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:08,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1735 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:50:08,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2023-11-19 07:50:08,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 1642. [2023-11-19 07:50:08,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1642 states, 789 states have (on average 2.155893536121673) internal successors, (1701), 1633 states have internal predecessors, (1701), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 07:50:08,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 1733 transitions. [2023-11-19 07:50:08,661 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 1733 transitions. Word has length 5 [2023-11-19 07:50:08,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:08,662 INFO L495 AbstractCegarLoop]: Abstraction has 1642 states and 1733 transitions. [2023-11-19 07:50:08,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-11-19 07:50:08,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 1733 transitions. [2023-11-19 07:50:08,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 07:50:08,663 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:08,663 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:50:08,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:50:08,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:50:08,866 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-19 07:50:08,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:08,867 INFO L85 PathProgramCache]: Analyzing trace with hash 37287571, now seen corresponding path program 1 times [2023-11-19 07:50:08,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:50:08,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [82980620] [2023-11-19 07:50:08,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:08,869 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 [2023-11-19 07:50:08,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:50:08,871 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:50:08,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:50:09,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:09,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:50:09,112 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:09,172 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-19 07:50:09,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:09,192 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:50:09,193 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:50:09,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [82980620] [2023-11-19 07:50:09,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [82980620] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:09,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:09,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:50:09,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186819097] [2023-11-19 07:50:09,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:09,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:50:09,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:50:09,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:50:09,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:50:09,198 INFO L87 Difference]: Start difference. First operand 1642 states and 1733 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2023-11-19 07:50:12,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:12,905 INFO L93 Difference]: Finished difference Result 1686 states and 1790 transitions. [2023-11-19 07:50:12,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:50:12,907 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2023-11-19 07:50:12,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:12,917 INFO L225 Difference]: With dead ends: 1686 [2023-11-19 07:50:12,917 INFO L226 Difference]: Without dead ends: 1686 [2023-11-19 07:50:12,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:50:12,919 INFO L413 NwaCegarLoop]: 1005 mSDtfsCounter, 1163 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1179 SdHoareTripleChecker+Valid, 1312 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:12,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1179 Valid, 1312 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-19 07:50:12,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1686 states. [2023-11-19 07:50:12,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1686 to 1629. [2023-11-19 07:50:12,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1629 states, 869 states have (on average 2.0103567318757194) internal successors, (1747), 1620 states have internal predecessors, (1747), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 07:50:12,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 1779 transitions. [2023-11-19 07:50:12,968 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 1779 transitions. Word has length 5 [2023-11-19 07:50:12,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:12,968 INFO L495 AbstractCegarLoop]: Abstraction has 1629 states and 1779 transitions. [2023-11-19 07:50:12,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2023-11-19 07:50:12,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 1779 transitions. [2023-11-19 07:50:12,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 07:50:12,969 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:12,969 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:50:12,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:50:13,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:50:13,172 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-19 07:50:13,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:13,173 INFO L85 PathProgramCache]: Analyzing trace with hash 37287572, now seen corresponding path program 1 times [2023-11-19 07:50:13,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:50:13,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [377002227] [2023-11-19 07:50:13,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:13,174 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 [2023-11-19 07:50:13,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:50:13,177 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:50:13,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:50:13,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:13,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:50:13,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:13,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-19 07:50:13,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:13,394 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:50:13,394 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:50:13,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [377002227] [2023-11-19 07:50:13,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [377002227] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:13,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:13,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:50:13,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111567267] [2023-11-19 07:50:13,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:13,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:50:13,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:50:13,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:50:13,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:50:13,397 INFO L87 Difference]: Start difference. First operand 1629 states and 1779 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2023-11-19 07:50:18,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:18,380 INFO L93 Difference]: Finished difference Result 1939 states and 2109 transitions. [2023-11-19 07:50:18,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:50:18,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2023-11-19 07:50:18,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:18,393 INFO L225 Difference]: With dead ends: 1939 [2023-11-19 07:50:18,394 INFO L226 Difference]: Without dead ends: 1939 [2023-11-19 07:50:18,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:50:18,395 INFO L413 NwaCegarLoop]: 1401 mSDtfsCounter, 512 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 2093 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:18,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 2093 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-11-19 07:50:18,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1939 states. [2023-11-19 07:50:18,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1939 to 1789. [2023-11-19 07:50:18,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1789 states, 1039 states have (on average 1.9797882579403272) internal successors, (2057), 1780 states have internal predecessors, (2057), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 07:50:18,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1789 states to 1789 states and 2089 transitions. [2023-11-19 07:50:18,447 INFO L78 Accepts]: Start accepts. Automaton has 1789 states and 2089 transitions. Word has length 5 [2023-11-19 07:50:18,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:18,448 INFO L495 AbstractCegarLoop]: Abstraction has 1789 states and 2089 transitions. [2023-11-19 07:50:18,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2023-11-19 07:50:18,448 INFO L276 IsEmpty]: Start isEmpty. Operand 1789 states and 2089 transitions. [2023-11-19 07:50:18,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 07:50:18,449 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:18,449 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:50:18,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:50:18,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:50:18,661 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-19 07:50:18,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:18,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1157605967, now seen corresponding path program 1 times [2023-11-19 07:50:18,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:50:18,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [163012609] [2023-11-19 07:50:18,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:18,664 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 [2023-11-19 07:50:18,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:50:18,665 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:50:18,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:50:18,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:18,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:50:18,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:18,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:18,843 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:50:18,844 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:50:18,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [163012609] [2023-11-19 07:50:18,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [163012609] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:18,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:18,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:50:18,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007045894] [2023-11-19 07:50:18,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:18,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:50:18,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:50:18,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:50:18,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:50:18,857 INFO L87 Difference]: Start difference. First operand 1789 states and 2089 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:18,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:18,981 INFO L93 Difference]: Finished difference Result 3147 states and 3708 transitions. [2023-11-19 07:50:18,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:50:18,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-19 07:50:18,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:19,003 INFO L225 Difference]: With dead ends: 3147 [2023-11-19 07:50:19,003 INFO L226 Difference]: Without dead ends: 3147 [2023-11-19 07:50:19,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:50:19,006 INFO L413 NwaCegarLoop]: 2073 mSDtfsCounter, 1147 mSDsluCounter, 1624 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1153 SdHoareTripleChecker+Valid, 3697 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:19,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1153 Valid, 3697 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:50:19,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3147 states. [2023-11-19 07:50:19,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3147 to 1790. [2023-11-19 07:50:19,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1790 states, 1040 states have (on average 1.978846153846154) internal successors, (2058), 1781 states have internal predecessors, (2058), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 07:50:19,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1790 states to 1790 states and 2090 transitions. [2023-11-19 07:50:19,069 INFO L78 Accepts]: Start accepts. Automaton has 1790 states and 2090 transitions. Word has length 6 [2023-11-19 07:50:19,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:19,069 INFO L495 AbstractCegarLoop]: Abstraction has 1790 states and 2090 transitions. [2023-11-19 07:50:19,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:19,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1790 states and 2090 transitions. [2023-11-19 07:50:19,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 07:50:19,071 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:19,071 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:19,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:50:19,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:50:19,273 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-19 07:50:19,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:19,273 INFO L85 PathProgramCache]: Analyzing trace with hash 334651453, now seen corresponding path program 1 times [2023-11-19 07:50:19,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:50:19,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1622282481] [2023-11-19 07:50:19,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:19,274 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:50:19,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:50:19,276 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:50:19,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:50:19,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:19,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:50:19,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:19,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:19,485 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:50:19,485 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:50:19,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1622282481] [2023-11-19 07:50:19,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1622282481] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:19,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:19,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:50:19,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281845299] [2023-11-19 07:50:19,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:19,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:50:19,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:50:19,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:50:19,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:50:19,488 INFO L87 Difference]: Start difference. First operand 1790 states and 2090 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) [2023-11-19 07:50:19,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:19,533 INFO L93 Difference]: Finished difference Result 1748 states and 2047 transitions. [2023-11-19 07:50:19,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:50:19,535 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 [2023-11-19 07:50:19,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:19,544 INFO L225 Difference]: With dead ends: 1748 [2023-11-19 07:50:19,545 INFO L226 Difference]: Without dead ends: 1748 [2023-11-19 07:50:19,545 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 [2023-11-19 07:50:19,546 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 81 mSDsluCounter, 1503 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 3078 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 [2023-11-19 07:50:19,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 3078 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:50:19,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1748 states. [2023-11-19 07:50:19,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1748 to 1748. [2023-11-19 07:50:19,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1748 states, 1022 states have (on average 1.971624266144814) internal successors, (2015), 1739 states have internal predecessors, (2015), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 07:50:19,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1748 states to 1748 states and 2047 transitions. [2023-11-19 07:50:19,595 INFO L78 Accepts]: Start accepts. Automaton has 1748 states and 2047 transitions. Word has length 11 [2023-11-19 07:50:19,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:19,595 INFO L495 AbstractCegarLoop]: Abstraction has 1748 states and 2047 transitions. [2023-11-19 07:50:19,595 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) [2023-11-19 07:50:19,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1748 states and 2047 transitions. [2023-11-19 07:50:19,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 07:50:19,596 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:19,596 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:19,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:50:19,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:50:19,799 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-19 07:50:19,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:19,800 INFO L85 PathProgramCache]: Analyzing trace with hash -522505033, now seen corresponding path program 1 times [2023-11-19 07:50:19,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:50:19,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [978454851] [2023-11-19 07:50:19,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:19,801 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 [2023-11-19 07:50:19,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:50:19,802 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:50:19,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:50:20,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:20,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:50:20,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:20,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:20,032 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:50:20,033 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:50:20,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [978454851] [2023-11-19 07:50:20,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [978454851] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:20,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:20,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:50:20,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444628001] [2023-11-19 07:50:20,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:20,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:50:20,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:50:20,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:50:20,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:50:20,035 INFO L87 Difference]: Start difference. First operand 1748 states and 2047 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) [2023-11-19 07:50:20,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:20,148 INFO L93 Difference]: Finished difference Result 1727 states and 2019 transitions. [2023-11-19 07:50:20,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:50:20,149 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 [2023-11-19 07:50:20,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:20,158 INFO L225 Difference]: With dead ends: 1727 [2023-11-19 07:50:20,158 INFO L226 Difference]: Without dead ends: 1727 [2023-11-19 07:50:20,159 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 [2023-11-19 07:50:20,159 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 62 mSDsluCounter, 3026 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 4556 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 [2023-11-19 07:50:20,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 4556 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:50:20,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1727 states. [2023-11-19 07:50:20,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1727 to 1726. [2023-11-19 07:50:20,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1726 states, 1014 states have (on average 1.9585798816568047) internal successors, (1986), 1717 states have internal predecessors, (1986), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 07:50:20,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2018 transitions. [2023-11-19 07:50:20,202 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2018 transitions. Word has length 13 [2023-11-19 07:50:20,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:20,202 INFO L495 AbstractCegarLoop]: Abstraction has 1726 states and 2018 transitions. [2023-11-19 07:50:20,202 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) [2023-11-19 07:50:20,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2018 transitions. [2023-11-19 07:50:20,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 07:50:20,204 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:20,204 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] [2023-11-19 07:50:20,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:50:20,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:50:20,408 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-19 07:50:20,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:20,409 INFO L85 PathProgramCache]: Analyzing trace with hash -22216187, now seen corresponding path program 1 times [2023-11-19 07:50:20,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:50:20,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [35569750] [2023-11-19 07:50:20,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:20,409 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 [2023-11-19 07:50:20,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:50:20,411 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:50:20,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:50:20,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:20,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:50:20,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:20,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-19 07:50:20,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:20,727 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:50:20,727 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:50:20,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [35569750] [2023-11-19 07:50:20,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [35569750] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:20,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:20,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:50:20,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973764234] [2023-11-19 07:50:20,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:20,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:50:20,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:50:20,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:50:20,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:50:20,730 INFO L87 Difference]: Start difference. First operand 1726 states and 2018 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) [2023-11-19 07:50:25,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:25,280 INFO L93 Difference]: Finished difference Result 1779 states and 2025 transitions. [2023-11-19 07:50:25,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:50:25,284 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 [2023-11-19 07:50:25,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:25,295 INFO L225 Difference]: With dead ends: 1779 [2023-11-19 07:50:25,295 INFO L226 Difference]: Without dead ends: 1779 [2023-11-19 07:50:25,295 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 [2023-11-19 07:50:25,297 INFO L413 NwaCegarLoop]: 959 mSDtfsCounter, 1092 mSDsluCounter, 989 mSDsCounter, 0 mSdLazyCounter, 1702 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1108 SdHoareTripleChecker+Valid, 1948 SdHoareTripleChecker+Invalid, 1717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:25,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1108 Valid, 1948 Invalid, 1717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1702 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-19 07:50:25,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1779 states. [2023-11-19 07:50:25,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1779 to 1722. [2023-11-19 07:50:25,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1722 states, 1014 states have (on average 1.9546351084812623) internal successors, (1982), 1713 states have internal predecessors, (1982), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 07:50:25,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1722 states to 1722 states and 2014 transitions. [2023-11-19 07:50:25,342 INFO L78 Accepts]: Start accepts. Automaton has 1722 states and 2014 transitions. Word has length 27 [2023-11-19 07:50:25,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:25,343 INFO L495 AbstractCegarLoop]: Abstraction has 1722 states and 2014 transitions. [2023-11-19 07:50:25,343 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) [2023-11-19 07:50:25,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1722 states and 2014 transitions. [2023-11-19 07:50:25,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 07:50:25,345 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:25,345 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] [2023-11-19 07:50:25,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:50:25,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:50:25,549 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-19 07:50:25,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:25,550 INFO L85 PathProgramCache]: Analyzing trace with hash -22216186, now seen corresponding path program 1 times [2023-11-19 07:50:25,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:50:25,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [841212060] [2023-11-19 07:50:25,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:25,553 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 [2023-11-19 07:50:25,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:50:25,554 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:50:25,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:50:25,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:25,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:50:25,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:25,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-19 07:50:26,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:26,035 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:50:26,035 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:50:26,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [841212060] [2023-11-19 07:50:26,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [841212060] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:26,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:26,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:50:26,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629343653] [2023-11-19 07:50:26,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:26,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:50:26,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:50:26,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:50:26,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:50:26,038 INFO L87 Difference]: Start difference. First operand 1722 states and 2014 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) [2023-11-19 07:50:32,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:32,102 INFO L93 Difference]: Finished difference Result 1868 states and 2030 transitions. [2023-11-19 07:50:32,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:50:32,104 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 [2023-11-19 07:50:32,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:32,115 INFO L225 Difference]: With dead ends: 1868 [2023-11-19 07:50:32,115 INFO L226 Difference]: Without dead ends: 1868 [2023-11-19 07:50:32,115 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 [2023-11-19 07:50:32,116 INFO L413 NwaCegarLoop]: 1355 mSDtfsCounter, 443 mSDsluCounter, 1426 mSDsCounter, 0 mSdLazyCounter, 1721 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 2781 SdHoareTripleChecker+Invalid, 1724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:32,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 2781 Invalid, 1724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1721 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-11-19 07:50:32,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1868 states. [2023-11-19 07:50:32,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1868 to 1718. [2023-11-19 07:50:32,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1718 states, 1014 states have (on average 1.95069033530572) internal successors, (1978), 1709 states have internal predecessors, (1978), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 07:50:32,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1718 states to 1718 states and 2010 transitions. [2023-11-19 07:50:32,162 INFO L78 Accepts]: Start accepts. Automaton has 1718 states and 2010 transitions. Word has length 27 [2023-11-19 07:50:32,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:32,162 INFO L495 AbstractCegarLoop]: Abstraction has 1718 states and 2010 transitions. [2023-11-19 07:50:32,163 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) [2023-11-19 07:50:32,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1718 states and 2010 transitions. [2023-11-19 07:50:32,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-19 07:50:32,164 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:32,164 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] [2023-11-19 07:50:32,173 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-11-19 07:50:32,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:50:32,368 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-19 07:50:32,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:32,369 INFO L85 PathProgramCache]: Analyzing trace with hash -125948801, now seen corresponding path program 1 times [2023-11-19 07:50:32,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:50:32,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1425821280] [2023-11-19 07:50:32,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:32,373 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 [2023-11-19 07:50:32,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:50:32,374 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:50:32,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:50:32,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:32,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:50:32,651 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:32,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:32,729 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:50:32,729 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:50:32,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1425821280] [2023-11-19 07:50:32,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1425821280] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:32,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:32,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:50:32,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442579720] [2023-11-19 07:50:32,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:32,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:50:32,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:50:32,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:50:32,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:50:32,733 INFO L87 Difference]: Start difference. First operand 1718 states and 2010 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:32,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:32,824 INFO L93 Difference]: Finished difference Result 1712 states and 2000 transitions. [2023-11-19 07:50:32,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:50:32,825 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2023-11-19 07:50:32,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:32,834 INFO L225 Difference]: With dead ends: 1712 [2023-11-19 07:50:32,835 INFO L226 Difference]: Without dead ends: 1712 [2023-11-19 07:50:32,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:50:32,836 INFO L413 NwaCegarLoop]: 1524 mSDtfsCounter, 31 mSDsluCounter, 3010 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 4534 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 [2023-11-19 07:50:32,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 4534 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:50:32,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1712 states. [2023-11-19 07:50:32,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1712 to 1712. [2023-11-19 07:50:32,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1712 states, 1008 states have (on average 1.9523809523809523) internal successors, (1968), 1703 states have internal predecessors, (1968), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 07:50:32,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1712 states to 1712 states and 2000 transitions. [2023-11-19 07:50:32,874 INFO L78 Accepts]: Start accepts. Automaton has 1712 states and 2000 transitions. Word has length 43 [2023-11-19 07:50:32,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:32,874 INFO L495 AbstractCegarLoop]: Abstraction has 1712 states and 2000 transitions. [2023-11-19 07:50:32,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:32,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1712 states and 2000 transitions. [2023-11-19 07:50:32,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-19 07:50:32,876 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:32,876 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] [2023-11-19 07:50:32,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:50:33,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:50:33,081 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-19 07:50:33,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:33,082 INFO L85 PathProgramCache]: Analyzing trace with hash 796373579, now seen corresponding path program 1 times [2023-11-19 07:50:33,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:50:33,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1726043165] [2023-11-19 07:50:33,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:33,082 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:50:33,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:50:33,087 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:50:33,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:50:33,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:33,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:50:33,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:33,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:33,793 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:50:33,793 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:50:33,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1726043165] [2023-11-19 07:50:33,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1726043165] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:33,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:33,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:50:33,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456178479] [2023-11-19 07:50:33,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:33,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:50:33,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:50:33,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:50:33,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:50:33,796 INFO L87 Difference]: Start difference. First operand 1712 states and 2000 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:34,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:34,082 INFO L93 Difference]: Finished difference Result 2136 states and 2441 transitions. [2023-11-19 07:50:34,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:50:34,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-11-19 07:50:34,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:34,099 INFO L225 Difference]: With dead ends: 2136 [2023-11-19 07:50:34,099 INFO L226 Difference]: Without dead ends: 2136 [2023-11-19 07:50:34,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:50:34,100 INFO L413 NwaCegarLoop]: 1610 mSDtfsCounter, 459 mSDsluCounter, 1405 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 3015 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:34,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 3015 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:50:34,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2136 states. [2023-11-19 07:50:34,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2136 to 1759. [2023-11-19 07:50:34,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1759 states, 1055 states have (on average 1.9099526066350712) internal successors, (2015), 1750 states have internal predecessors, (2015), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 07:50:34,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1759 states to 1759 states and 2047 transitions. [2023-11-19 07:50:34,144 INFO L78 Accepts]: Start accepts. Automaton has 1759 states and 2047 transitions. Word has length 51 [2023-11-19 07:50:34,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:34,145 INFO L495 AbstractCegarLoop]: Abstraction has 1759 states and 2047 transitions. [2023-11-19 07:50:34,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:34,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1759 states and 2047 transitions. [2023-11-19 07:50:34,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-19 07:50:34,150 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:34,151 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] [2023-11-19 07:50:34,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:50:34,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:50:34,356 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-19 07:50:34,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:34,356 INFO L85 PathProgramCache]: Analyzing trace with hash -741532885, now seen corresponding path program 1 times [2023-11-19 07:50:34,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:50:34,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [321260189] [2023-11-19 07:50:34,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:34,357 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 [2023-11-19 07:50:34,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:50:34,359 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:50:34,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:50:34,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:34,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:50:34,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:34,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-19 07:50:34,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-19 07:50:35,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:50:35,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-19 07:50:35,616 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-19 07:50:35,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-19 07:50:35,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:35,641 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:50:35,641 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:50:35,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [321260189] [2023-11-19 07:50:35,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [321260189] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:35,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:35,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:50:35,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828176284] [2023-11-19 07:50:35,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:35,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:50:35,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:50:35,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:50:35,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:50:35,643 INFO L87 Difference]: Start difference. First operand 1759 states and 2047 transitions. Second operand has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 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) [2023-11-19 07:50:39,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:39,663 INFO L93 Difference]: Finished difference Result 1731 states and 1973 transitions. [2023-11-19 07:50:39,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:50:39,664 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 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 54 [2023-11-19 07:50:39,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:39,672 INFO L225 Difference]: With dead ends: 1731 [2023-11-19 07:50:39,673 INFO L226 Difference]: Without dead ends: 1731 [2023-11-19 07:50:39,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:50:39,674 INFO L413 NwaCegarLoop]: 757 mSDtfsCounter, 1970 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 996 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1976 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:39,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1976 Valid, 1091 Invalid, 1104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 996 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-19 07:50:39,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2023-11-19 07:50:39,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1505. [2023-11-19 07:50:39,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1505 states, 885 states have (on average 1.8192090395480225) internal successors, (1610), 1496 states have internal predecessors, (1610), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 07:50:39,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1505 states to 1505 states and 1642 transitions. [2023-11-19 07:50:39,707 INFO L78 Accepts]: Start accepts. Automaton has 1505 states and 1642 transitions. Word has length 54 [2023-11-19 07:50:39,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:39,708 INFO L495 AbstractCegarLoop]: Abstraction has 1505 states and 1642 transitions. [2023-11-19 07:50:39,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 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) [2023-11-19 07:50:39,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1505 states and 1642 transitions. [2023-11-19 07:50:39,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-19 07:50:39,709 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:39,710 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] [2023-11-19 07:50:39,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:50:39,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:50:39,916 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-19 07:50:39,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:39,916 INFO L85 PathProgramCache]: Analyzing trace with hash -313883618, now seen corresponding path program 1 times [2023-11-19 07:50:39,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:50:39,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [296400652] [2023-11-19 07:50:39,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:39,917 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 [2023-11-19 07:50:39,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:50:39,919 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:50:39,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa64ccb-cbcf-4b40-853c-f3782480a884/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:50:40,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:40,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:50:40,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:40,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-19 07:50:40,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-19 07:50:40,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-19 07:50:40,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:40,329 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:50:40,329 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:50:40,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [296400652] [2023-11-19 07:50:40,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [296400652] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:40,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:40,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:50:40,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090656874] [2023-11-19 07:50:40,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:40,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:50:40,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:50:40,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:50:40,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:50:40,332 INFO L87 Difference]: Start difference. First operand 1505 states and 1642 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 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)