./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext-properties/test-0019_1-2.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_08687825-62ec-4bc2-a88e-18a7ad46f169/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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_08687825-62ec-4bc2-a88e-18a7ad46f169/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/test-0019_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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_08687825-62ec-4bc2-a88e-18a7ad46f169/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 ef47df31d033e531a0040913ad039c21826bf787c77c5128ceae3ef436a47b49 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:57:39,148 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:57:39,277 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:57:39,288 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:57:39,289 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:57:39,331 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:57:39,333 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:57:39,334 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:57:39,335 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:57:39,342 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:57:39,345 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:57:39,345 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:57:39,346 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:57:39,348 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:57:39,349 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:57:39,349 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:57:39,350 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:57:39,350 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:57:39,350 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:57:39,351 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:57:39,351 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:57:39,352 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:57:39,352 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:57:39,353 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:57:39,353 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:57:39,354 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:57:39,355 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:57:39,355 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:57:39,356 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:57:39,356 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:57:39,358 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:57:39,358 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:57:39,358 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:57:39,359 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:57:39,359 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:57:39,359 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:57:39,360 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:57:39,360 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:57:39,360 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_08687825-62ec-4bc2-a88e-18a7ad46f169/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef47df31d033e531a0040913ad039c21826bf787c77c5128ceae3ef436a47b49 [2023-11-19 07:57:39,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:57:39,742 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:57:39,746 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:57:39,747 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:57:39,748 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:57:39,750 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/list-ext-properties/test-0019_1-2.i [2023-11-19 07:57:42,803 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:57:43,175 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:57:43,176 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/sv-benchmarks/c/list-ext-properties/test-0019_1-2.i [2023-11-19 07:57:43,194 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/bin/uautomizer-verify-uCwYo4JHxu/data/4b6f8be69/c3546735d6a946ffbc550aa304eae75d/FLAG5b1d7b748 [2023-11-19 07:57:43,210 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/bin/uautomizer-verify-uCwYo4JHxu/data/4b6f8be69/c3546735d6a946ffbc550aa304eae75d [2023-11-19 07:57:43,213 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:57:43,215 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:57:43,216 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:57:43,217 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:57:43,222 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:57:43,223 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:57:43" (1/1) ... [2023-11-19 07:57:43,224 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@289f6a15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:43, skipping insertion in model container [2023-11-19 07:57:43,225 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:57:43" (1/1) ... [2023-11-19 07:57:43,272 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:57:43,588 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:57:43,601 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 07:57:43,602 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7b68ea5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:43, skipping insertion in model container [2023-11-19 07:57:43,603 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:57:43,603 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 07:57:43,605 INFO L158 Benchmark]: Toolchain (without parser) took 389.46ms. Allocated memory is still 178.3MB. Free memory was 142.9MB in the beginning and 131.3MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 07:57:43,606 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 146.8MB. Free memory is still 88.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:57:43,606 INFO L158 Benchmark]: CACSL2BoogieTranslator took 386.71ms. Allocated memory is still 178.3MB. Free memory was 142.9MB in the beginning and 131.3MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 07:57:43,608 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 146.8MB. Free memory is still 88.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 386.71ms. Allocated memory is still 178.3MB. Free memory was 142.9MB in the beginning and 131.3MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 529]: 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_08687825-62ec-4bc2-a88e-18a7ad46f169/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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_08687825-62ec-4bc2-a88e-18a7ad46f169/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/test-0019_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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_08687825-62ec-4bc2-a88e-18a7ad46f169/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 ef47df31d033e531a0040913ad039c21826bf787c77c5128ceae3ef436a47b49 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:57:46,171 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:57:46,248 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-19 07:57:46,254 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:57:46,255 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:57:46,286 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:57:46,287 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:57:46,288 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:57:46,289 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:57:46,289 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:57:46,290 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:57:46,291 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:57:46,292 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:57:46,293 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:57:46,293 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:57:46,294 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:57:46,295 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:57:46,295 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:57:46,296 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:57:46,296 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:57:46,297 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:57:46,297 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:57:46,298 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:57:46,299 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 07:57:46,299 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 07:57:46,300 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:57:46,300 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:57:46,301 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:57:46,302 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:57:46,302 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:57:46,303 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:57:46,303 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:57:46,304 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:57:46,305 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:57:46,305 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-19 07:57:46,306 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 07:57:46,306 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:57:46,307 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:57:46,307 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:57:46,308 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-19 07:57:46,309 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:57:46,309 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_08687825-62ec-4bc2-a88e-18a7ad46f169/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef47df31d033e531a0040913ad039c21826bf787c77c5128ceae3ef436a47b49 [2023-11-19 07:57:46,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:57:46,750 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:57:46,753 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:57:46,755 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:57:46,755 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:57:46,757 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/list-ext-properties/test-0019_1-2.i [2023-11-19 07:57:49,988 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:57:50,367 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:57:50,368 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/sv-benchmarks/c/list-ext-properties/test-0019_1-2.i [2023-11-19 07:57:50,396 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/bin/uautomizer-verify-uCwYo4JHxu/data/2c13ddf42/4c25465e26794fcd919cb03d31baf370/FLAG762b959b5 [2023-11-19 07:57:50,413 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/bin/uautomizer-verify-uCwYo4JHxu/data/2c13ddf42/4c25465e26794fcd919cb03d31baf370 [2023-11-19 07:57:50,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:57:50,424 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:57:50,428 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:57:50,429 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:57:50,434 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:57:50,435 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:57:50" (1/1) ... [2023-11-19 07:57:50,436 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e8c3691 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:50, skipping insertion in model container [2023-11-19 07:57:50,437 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:57:50" (1/1) ... [2023-11-19 07:57:50,505 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:57:50,924 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:57:50,940 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 07:57:50,948 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:57:50,976 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:57:50,998 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:57:51,064 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:57:51,139 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:57:51,142 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:51 WrapperNode [2023-11-19 07:57:51,143 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:57:51,145 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:57:51,145 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:57:51,145 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:57:51,154 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:51" (1/1) ... [2023-11-19 07:57:51,217 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:51" (1/1) ... [2023-11-19 07:57:51,251 INFO L138 Inliner]: procedures = 128, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 64 [2023-11-19 07:57:51,252 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:57:51,253 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:57:51,253 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:57:51,254 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:57:51,263 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:51" (1/1) ... [2023-11-19 07:57:51,264 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:51" (1/1) ... [2023-11-19 07:57:51,280 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:51" (1/1) ... [2023-11-19 07:57:51,283 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:51" (1/1) ... [2023-11-19 07:57:51,292 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:51" (1/1) ... [2023-11-19 07:57:51,307 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:51" (1/1) ... [2023-11-19 07:57:51,315 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:51" (1/1) ... [2023-11-19 07:57:51,316 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:51" (1/1) ... [2023-11-19 07:57:51,320 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:57:51,324 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:57:51,324 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:57:51,324 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:57:51,325 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:51" (1/1) ... [2023-11-19 07:57:51,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:57:51,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:51,365 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:57:51,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:57:51,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 07:57:51,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:57:51,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:57:51,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:57:51,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 07:57:51,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:57:51,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:57:51,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 07:57:51,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 07:57:51,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:57:51,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:57:51,542 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:57:51,544 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:57:52,018 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:57:52,027 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:57:52,028 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:57:52,031 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:57:52 BoogieIcfgContainer [2023-11-19 07:57:52,031 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:57:52,034 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:57:52,034 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:57:52,036 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:57:52,037 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:57:50" (1/3) ... [2023-11-19 07:57:52,038 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d97532e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:57:52, skipping insertion in model container [2023-11-19 07:57:52,038 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:51" (2/3) ... [2023-11-19 07:57:52,038 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d97532e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:57:52, skipping insertion in model container [2023-11-19 07:57:52,038 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:57:52" (3/3) ... [2023-11-19 07:57:52,040 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0019_1-2.i [2023-11-19 07:57:52,061 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:57:52,062 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 35 error locations. [2023-11-19 07:57:52,111 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:57:52,119 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;@5736e3c3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:57:52,120 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2023-11-19 07:57:52,126 INFO L276 IsEmpty]: Start isEmpty. Operand has 70 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 69 states have internal predecessors, (70), 0 states have call successors, (0), 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 07:57:52,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 07:57:52,132 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:52,133 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 07:57:52,134 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2023-11-19 07:57:52,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:52,139 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2023-11-19 07:57:52,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:57:52,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [95189288] [2023-11-19 07:57:52,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:52,156 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 07:57:52,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:57:52,159 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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 07:57:52,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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 07:57:52,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:52,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:57:52,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:52,437 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-19 07:57:52,438 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 1 case distinctions, treesize of input 9 treesize of output 15 [2023-11-19 07:57:52,479 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 07:57:52,480 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:52,481 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:57:52,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [95189288] [2023-11-19 07:57:52,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [95189288] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:52,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:52,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:57:52,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142642363] [2023-11-19 07:57:52,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:52,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:52,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:57:52,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:52,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:52,532 INFO L87 Difference]: Start difference. First operand has 70 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 69 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:52,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:52,775 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2023-11-19 07:57:52,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:52,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-19 07:57:52,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:52,788 INFO L225 Difference]: With dead ends: 66 [2023-11-19 07:57:52,788 INFO L226 Difference]: Without dead ends: 64 [2023-11-19 07:57:52,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:52,794 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 17 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:52,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 73 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:57:52,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-11-19 07:57:52,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-11-19 07:57:52,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 33 states have (on average 1.9393939393939394) internal successors, (64), 63 states have internal predecessors, (64), 0 states have call successors, (0), 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 07:57:52,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2023-11-19 07:57:52,841 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 3 [2023-11-19 07:57:52,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:52,842 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2023-11-19 07:57:52,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:52,843 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2023-11-19 07:57:52,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 07:57:52,843 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:52,843 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 07:57:52,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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 07:57:53,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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 07:57:53,046 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2023-11-19 07:57:53,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:53,047 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2023-11-19 07:57:53,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:57:53,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [699451732] [2023-11-19 07:57:53,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:53,049 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 07:57:53,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:57:53,051 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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 07:57:53,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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 07:57:53,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:53,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 07:57:53,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:53,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:57:53,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-19 07:57:53,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-19 07:57:53,239 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 07:57:53,239 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:53,239 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:57:53,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [699451732] [2023-11-19 07:57:53,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [699451732] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:53,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:53,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:57:53,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743829857] [2023-11-19 07:57:53,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:53,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:53,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:57:53,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:53,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:53,243 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:53,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:53,440 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2023-11-19 07:57:53,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:53,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-19 07:57:53,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:53,443 INFO L225 Difference]: With dead ends: 63 [2023-11-19 07:57:53,443 INFO L226 Difference]: Without dead ends: 63 [2023-11-19 07:57:53,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:53,445 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 1 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:53,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 92 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:57:53,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-11-19 07:57:53,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2023-11-19 07:57:53,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 33 states have (on average 1.9090909090909092) internal successors, (63), 62 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:53,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2023-11-19 07:57:53,453 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 3 [2023-11-19 07:57:53,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:53,454 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2023-11-19 07:57:53,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:53,454 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2023-11-19 07:57:53,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 07:57:53,454 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:53,454 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:57:53,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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 07:57:53,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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 07:57:53,657 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2023-11-19 07:57:53,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:53,658 INFO L85 PathProgramCache]: Analyzing trace with hash 28691811, now seen corresponding path program 1 times [2023-11-19 07:57:53,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:57:53,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [385640931] [2023-11-19 07:57:53,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:53,659 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:57:53,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:57:53,661 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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 07:57:53,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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 07:57:53,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:53,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 07:57:53,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:53,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:57:53,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-19 07:57:53,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-19 07:57:53,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:57:53,948 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 07:57:53,967 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-19 07:57:53,968 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 07:57:53,976 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 07:57:53,976 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:53,976 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:57:53,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [385640931] [2023-11-19 07:57:53,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [385640931] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:53,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:53,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:57:53,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562120286] [2023-11-19 07:57:53,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:53,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:57:53,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:57:53,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:57:53,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:57:53,982 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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 07:57:54,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:54,239 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2023-11-19 07:57:54,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:54,240 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 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 07:57:54,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:54,241 INFO L225 Difference]: With dead ends: 60 [2023-11-19 07:57:54,241 INFO L226 Difference]: Without dead ends: 60 [2023-11-19 07:57:54,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 07:57:54,243 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 12 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:54,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 86 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:57:54,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-11-19 07:57:54,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2023-11-19 07:57:54,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 33 states have (on average 1.8181818181818181) internal successors, (60), 59 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:54,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2023-11-19 07:57:54,250 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 5 [2023-11-19 07:57:54,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:54,251 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2023-11-19 07:57:54,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 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 07:57:54,251 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2023-11-19 07:57:54,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 07:57:54,252 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:54,252 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:54,264 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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)] Ended with exit code 0 [2023-11-19 07:57:54,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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 07:57:54,455 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2023-11-19 07:57:54,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:54,456 INFO L85 PathProgramCache]: Analyzing trace with hash 59199982, now seen corresponding path program 1 times [2023-11-19 07:57:54,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:57:54,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [671572741] [2023-11-19 07:57:54,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:54,457 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 07:57:54,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:57:54,458 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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 07:57:54,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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 07:57:54,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:54,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-19 07:57:54,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:54,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-19 07:57:54,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:57:54,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-19 07:57:54,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 07:57:54,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-19 07:57:54,704 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2023-11-19 07:57:54,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2023-11-19 07:57:54,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-19 07:57:54,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-19 07:57:54,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 14 [2023-11-19 07:57:54,920 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 07:57:54,920 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:54,921 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:57:54,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [671572741] [2023-11-19 07:57:54,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [671572741] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:54,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:54,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:57:54,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121912707] [2023-11-19 07:57:54,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:54,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:57:54,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:57:54,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:57:54,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:57:54,924 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:55,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:55,570 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2023-11-19 07:57:55,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:57:55,577 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-19 07:57:55,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:55,578 INFO L225 Difference]: With dead ends: 59 [2023-11-19 07:57:55,578 INFO L226 Difference]: Without dead ends: 59 [2023-11-19 07:57:55,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:57:55,579 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 5 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:55,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 170 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:57:55,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-19 07:57:55,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-11-19 07:57:55,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 33 states have (on average 1.7878787878787878) internal successors, (59), 58 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) [2023-11-19 07:57:55,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2023-11-19 07:57:55,586 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 8 [2023-11-19 07:57:55,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:55,587 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2023-11-19 07:57:55,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:55,587 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2023-11-19 07:57:55,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 07:57:55,587 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:55,587 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:55,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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 07:57:55,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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 07:57:55,788 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2023-11-19 07:57:55,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:55,789 INFO L85 PathProgramCache]: Analyzing trace with hash 59199981, now seen corresponding path program 1 times [2023-11-19 07:57:55,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:57:55,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [399107488] [2023-11-19 07:57:55,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:55,790 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 07:57:55,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:57:55,791 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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 07:57:55,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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 07:57:55,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:55,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 07:57:55,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:55,926 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-11-19 07:57:55,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 22 [2023-11-19 07:57:55,977 INFO L349 Elim1Store]: treesize reduction 41, result has 6.8 percent of original size [2023-11-19 07:57:55,980 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 1 case distinctions, treesize of input 17 treesize of output 14 [2023-11-19 07:57:56,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 07:57:56,074 INFO L349 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2023-11-19 07:57:56,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 24 [2023-11-19 07:57:56,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-11-19 07:57:56,196 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:57:56,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 32 treesize of output 18 [2023-11-19 07:57:56,243 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 07:57:56,245 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:56,246 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:57:56,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [399107488] [2023-11-19 07:57:56,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [399107488] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:56,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:56,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:57:56,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266420471] [2023-11-19 07:57:56,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:56,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:57:56,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:57:56,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:57:56,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:57:56,249 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:56,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:56,825 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2023-11-19 07:57:56,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:57:56,826 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-19 07:57:56,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:56,827 INFO L225 Difference]: With dead ends: 58 [2023-11-19 07:57:56,827 INFO L226 Difference]: Without dead ends: 58 [2023-11-19 07:57:56,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:57:56,828 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 54 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:56,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 92 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:57:56,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-11-19 07:57:56,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2023-11-19 07:57:56,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 33 states have (on average 1.7575757575757576) internal successors, (58), 57 states have internal predecessors, (58), 0 states have call successors, (0), 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 07:57:56,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2023-11-19 07:57:56,835 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 8 [2023-11-19 07:57:56,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:56,836 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2023-11-19 07:57:56,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:56,836 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2023-11-19 07:57:56,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 07:57:56,837 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:56,837 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:56,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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 07:57:57,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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 07:57:57,040 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2023-11-19 07:57:57,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:57,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1604937559, now seen corresponding path program 1 times [2023-11-19 07:57:57,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:57:57,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [208573561] [2023-11-19 07:57:57,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:57,043 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:57:57,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:57:57,044 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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 07:57:57,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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 07:57:57,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:57,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 07:57:57,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:57,225 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-11-19 07:57:57,225 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 15 treesize of output 11 [2023-11-19 07:57:57,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 07:57:57,276 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 07:57:57,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 12 [2023-11-19 07:57:57,438 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-19 07:57:57,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2023-11-19 07:57:57,487 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:57:57,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 31 treesize of output 15 [2023-11-19 07:57:57,506 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 07:57:57,507 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:57,507 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:57:57,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [208573561] [2023-11-19 07:57:57,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [208573561] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:57,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:57,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:57:57,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372408330] [2023-11-19 07:57:57,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:57,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:57:57,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:57:57,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:57:57,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:57:57,509 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 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 07:57:58,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:58,054 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2023-11-19 07:57:58,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:57:58,054 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 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 07:57:58,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:58,055 INFO L225 Difference]: With dead ends: 57 [2023-11-19 07:57:58,055 INFO L226 Difference]: Without dead ends: 57 [2023-11-19 07:57:58,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:57:58,056 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 56 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:58,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 111 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:57:58,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-11-19 07:57:58,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2023-11-19 07:57:58,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 33 states have (on average 1.7272727272727273) internal successors, (57), 56 states have internal predecessors, (57), 0 states have call successors, (0), 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 07:57:58,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2023-11-19 07:57:58,062 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 11 [2023-11-19 07:57:58,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:58,063 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2023-11-19 07:57:58,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 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 07:57:58,063 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2023-11-19 07:57:58,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 07:57:58,064 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:58,064 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:58,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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 07:57:58,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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 07:57:58,267 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2023-11-19 07:57:58,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:58,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1604937558, now seen corresponding path program 1 times [2023-11-19 07:57:58,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:57:58,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1930739107] [2023-11-19 07:57:58,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:58,268 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 07:57:58,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:57:58,269 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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 07:57:58,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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 07:57:58,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:58,401 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-19 07:57:58,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:58,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-19 07:57:58,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 07:57:58,466 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 07:57:58,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-19 07:57:58,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-11-19 07:57:58,705 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-19 07:57:58,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-19 07:57:58,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-11-19 07:57:58,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-19 07:57:58,797 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 07:57:58,797 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:58,797 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:57:58,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1930739107] [2023-11-19 07:57:58,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1930739107] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:58,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:58,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:57:58,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980591416] [2023-11-19 07:57:58,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:58,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:57:58,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:57:58,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:57:58,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:57:58,800 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 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 07:57:59,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:59,178 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2023-11-19 07:57:59,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:57:59,179 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 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 07:57:59,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:59,180 INFO L225 Difference]: With dead ends: 56 [2023-11-19 07:57:59,180 INFO L226 Difference]: Without dead ends: 56 [2023-11-19 07:57:59,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:57:59,181 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 4 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:59,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 193 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:57:59,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-11-19 07:57:59,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-11-19 07:57:59,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 33 states have (on average 1.696969696969697) internal successors, (56), 55 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:59,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2023-11-19 07:57:59,187 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 11 [2023-11-19 07:57:59,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:59,187 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2023-11-19 07:57:59,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 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 07:57:59,187 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2023-11-19 07:57:59,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 07:57:59,188 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:59,188 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:59,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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 07:57:59,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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 07:57:59,392 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2023-11-19 07:57:59,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:59,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1118886990, now seen corresponding path program 1 times [2023-11-19 07:57:59,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:57:59,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1289145944] [2023-11-19 07:57:59,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:59,393 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 07:57:59,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:57:59,395 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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 07:57:59,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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 07:57:59,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:59,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:57:59,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:59,552 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 07:57:59,552 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:59,552 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:57:59,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1289145944] [2023-11-19 07:57:59,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1289145944] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:59,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:59,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:57:59,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984332047] [2023-11-19 07:57:59,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:59,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:57:59,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:57:59,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:57:59,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:57:59,555 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:59,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:59,721 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2023-11-19 07:57:59,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:57:59,722 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-19 07:57:59,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:59,723 INFO L225 Difference]: With dead ends: 54 [2023-11-19 07:57:59,723 INFO L226 Difference]: Without dead ends: 54 [2023-11-19 07:57:59,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 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 07:57:59,724 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 39 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:59,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 52 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:57:59,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-11-19 07:57:59,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2023-11-19 07:57:59,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 53 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 07:57:59,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2023-11-19 07:57:59,728 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 14 [2023-11-19 07:57:59,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:59,728 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2023-11-19 07:57:59,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:59,729 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2023-11-19 07:57:59,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 07:57:59,729 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:59,729 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:59,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:59,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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 07:57:59,932 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2023-11-19 07:57:59,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:59,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1118886989, now seen corresponding path program 1 times [2023-11-19 07:57:59,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:57:59,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2113154034] [2023-11-19 07:57:59,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:59,933 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 07:57:59,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:57:59,934 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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 07:57:59,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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 07:58:00,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:00,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:58:00,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:00,181 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 07:58:00,182 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:00,182 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:58:00,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2113154034] [2023-11-19 07:58:00,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2113154034] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:00,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:00,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:58:00,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297674379] [2023-11-19 07:58:00,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:00,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:58:00,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:58:00,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:58:00,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:58:00,185 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:00,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:00,364 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2023-11-19 07:58:00,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:58:00,365 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-19 07:58:00,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:00,366 INFO L225 Difference]: With dead ends: 52 [2023-11-19 07:58:00,366 INFO L226 Difference]: Without dead ends: 52 [2023-11-19 07:58:00,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 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 07:58:00,367 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 45 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:00,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 54 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:58:00,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-11-19 07:58:00,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2023-11-19 07:58:00,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 33 states have (on average 1.5757575757575757) internal successors, (52), 51 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:00,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2023-11-19 07:58:00,372 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 14 [2023-11-19 07:58:00,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:00,373 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2023-11-19 07:58:00,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:00,373 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2023-11-19 07:58:00,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-19 07:58:00,374 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:00,374 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:00,385 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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)] Ended with exit code 0 [2023-11-19 07:58:00,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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 07:58:00,577 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2023-11-19 07:58:00,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:00,578 INFO L85 PathProgramCache]: Analyzing trace with hash 478865263, now seen corresponding path program 1 times [2023-11-19 07:58:00,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:58:00,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1269330247] [2023-11-19 07:58:00,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:00,579 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 07:58:00,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:58:00,580 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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 07:58:00,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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 07:58:00,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:00,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:58:00,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:00,715 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 07:58:00,722 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 07:58:00,723 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:00,723 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:58:00,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1269330247] [2023-11-19 07:58:00,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1269330247] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:00,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:00,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:58:00,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539396343] [2023-11-19 07:58:00,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:00,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:58:00,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:58:00,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:58:00,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:58:00,726 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:00,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:00,845 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2023-11-19 07:58:00,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:58:00,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-19 07:58:00,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:00,847 INFO L225 Difference]: With dead ends: 48 [2023-11-19 07:58:00,847 INFO L226 Difference]: Without dead ends: 48 [2023-11-19 07:58:00,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:58:00,848 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 22 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:00,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 41 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:58:00,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-11-19 07:58:00,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2023-11-19 07:58:00,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 33 states have (on average 1.4545454545454546) internal successors, (48), 47 states have internal predecessors, (48), 0 states have call successors, (0), 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 07:58:00,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2023-11-19 07:58:00,852 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 17 [2023-11-19 07:58:00,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:00,853 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2023-11-19 07:58:00,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:00,853 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2023-11-19 07:58:00,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-19 07:58:00,854 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:00,854 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:00,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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 07:58:01,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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 07:58:01,056 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2023-11-19 07:58:01,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:01,057 INFO L85 PathProgramCache]: Analyzing trace with hash 478865264, now seen corresponding path program 1 times [2023-11-19 07:58:01,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:58:01,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2098927365] [2023-11-19 07:58:01,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:01,057 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 07:58:01,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:58:01,058 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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 07:58:01,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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 07:58:01,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:01,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:58:01,193 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:01,201 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 07:58:01,210 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 07:58:01,211 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:01,211 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:58:01,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2098927365] [2023-11-19 07:58:01,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2098927365] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:01,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:01,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:58:01,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061660234] [2023-11-19 07:58:01,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:01,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:58:01,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:58:01,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:58:01,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:58:01,213 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:01,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:01,321 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2023-11-19 07:58:01,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:58:01,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-19 07:58:01,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:01,322 INFO L225 Difference]: With dead ends: 44 [2023-11-19 07:58:01,322 INFO L226 Difference]: Without dead ends: 44 [2023-11-19 07:58:01,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:58:01,323 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 24 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:01,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 39 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:58:01,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-19 07:58:01,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-11-19 07:58:01,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 43 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:01,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2023-11-19 07:58:01,326 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 17 [2023-11-19 07:58:01,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:01,327 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2023-11-19 07:58:01,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:01,327 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2023-11-19 07:58:01,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-19 07:58:01,328 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:01,328 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] [2023-11-19 07:58:01,337 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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)] Ended with exit code 0 [2023-11-19 07:58:01,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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 07:58:01,531 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2023-11-19 07:58:01,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:01,532 INFO L85 PathProgramCache]: Analyzing trace with hash -925217004, now seen corresponding path program 1 times [2023-11-19 07:58:01,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:58:01,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [259109302] [2023-11-19 07:58:01,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:01,533 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 07:58:01,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:58:01,534 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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 07:58:01,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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 07:58:01,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:01,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-19 07:58:01,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:01,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-19 07:58:01,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 07:58:01,940 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-19 07:58:01,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-19 07:58:02,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:58:02,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 12 [2023-11-19 07:58:02,204 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-19 07:58:02,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 43 [2023-11-19 07:58:02,418 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-19 07:58:02,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 47 [2023-11-19 07:58:02,725 INFO L349 Elim1Store]: treesize reduction 60, result has 34.1 percent of original size [2023-11-19 07:58:02,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 44 [2023-11-19 07:58:02,902 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:58:02,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 43 [2023-11-19 07:58:03,066 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:58:03,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 46 [2023-11-19 07:58:03,262 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:58:03,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 26 [2023-11-19 07:58:03,686 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 07:58:03,686 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:03,687 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:58:03,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [259109302] [2023-11-19 07:58:03,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [259109302] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:03,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:03,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-19 07:58:03,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586775096] [2023-11-19 07:58:03,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:03,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-19 07:58:03,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:58:03,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-19 07:58:03,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:58:03,689 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand has 15 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 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 07:58:06,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:06,225 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2023-11-19 07:58:06,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-19 07:58:06,225 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-11-19 07:58:06,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:06,226 INFO L225 Difference]: With dead ends: 42 [2023-11-19 07:58:06,226 INFO L226 Difference]: Without dead ends: 42 [2023-11-19 07:58:06,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2023-11-19 07:58:06,227 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 43 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:06,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 119 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-19 07:58:06,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-11-19 07:58:06,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2023-11-19 07:58:06,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 41 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:06,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2023-11-19 07:58:06,231 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 23 [2023-11-19 07:58:06,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:06,231 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2023-11-19 07:58:06,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 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 07:58:06,232 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2023-11-19 07:58:06,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-19 07:58:06,233 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:06,233 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] [2023-11-19 07:58:06,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:06,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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 07:58:06,438 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2023-11-19 07:58:06,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:06,438 INFO L85 PathProgramCache]: Analyzing trace with hash -925217003, now seen corresponding path program 1 times [2023-11-19 07:58:06,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:58:06,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [999808531] [2023-11-19 07:58:06,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:06,439 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 07:58:06,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:58:06,441 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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 07:58:06,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08687825-62ec-4bc2-a88e-18a7ad46f169/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 (14)] Waiting until timeout for monitored process [2023-11-19 07:58:06,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:06,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 50 conjunts are in the unsatisfiable core [2023-11-19 07:58:06,826 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:06,861 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-19 07:58:06,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2023-11-19 07:58:06,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-19 07:58:06,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 07:58:07,047 INFO L349 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2023-11-19 07:58:07,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2023-11-19 07:58:07,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-19 07:58:07,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:58:07,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 27 [2023-11-19 07:58:07,191 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 8 treesize of output 1 [2023-11-19 07:58:07,506 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-19 07:58:07,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 72 [2023-11-19 07:58:07,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 22 [2023-11-19 07:58:07,996 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-19 07:58:07,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 80 [2023-11-19 07:58:08,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 22 [2023-11-19 07:58:12,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:58:12,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-19 07:58:12,409 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2023-11-19 07:58:12,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2023-11-19 07:58:20,028 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-11-19 07:58:20,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 25 [2023-11-19 07:58:20,222 INFO L349 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2023-11-19 07:58:20,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 55 [2023-11-19 07:58:31,370 WARN L293 SmtUtils]: Spent 7.54s on a formula simplification. DAG size of input: 48 DAG size of output: 23 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-19 07:58:31,370 INFO L349 Elim1Store]: treesize reduction 102, result has 25.5 percent of original size [2023-11-19 07:58:31,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 170 treesize of output 155 [2023-11-19 07:58:33,744 INFO L349 Elim1Store]: treesize reduction 51, result has 25.0 percent of original size [2023-11-19 07:58:33,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 137 treesize of output 103 [2023-11-19 07:58:35,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-19 07:58:35,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-11-19 07:58:36,217 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 07:58:36,218 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:36,218 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:58:36,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [999808531] [2023-11-19 07:58:36,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [999808531] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:36,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:36,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-11-19 07:58:36,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318878197] [2023-11-19 07:58:36,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:36,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-19 07:58:36,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:58:36,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-19 07:58:36,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=203, Unknown=3, NotChecked=0, Total=240 [2023-11-19 07:58:36,221 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand has 16 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 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 07:58:38,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 07:58:40,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]