./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.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_47b6815d-5c1e-41bc-bded-842ebe09c8aa/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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_47b6815d-5c1e-41bc-bded-842ebe09c8aa/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 60f6803c5e3744d9299e1af81cd011414f5ac623b556345642fa85a1d93686e4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:51:07,439 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:51:07,546 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:51:07,551 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:51:07,551 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:51:07,591 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:51:07,595 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:51:07,596 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:51:07,598 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:51:07,602 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:51:07,603 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:51:07,604 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:51:07,604 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:51:07,606 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:51:07,616 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:51:07,616 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:51:07,617 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:51:07,617 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:51:07,618 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:51:07,618 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:51:07,619 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:51:07,619 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:51:07,620 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:51:07,621 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:51:07,621 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:51:07,622 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:51:07,623 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:51:07,623 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:51:07,624 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:51:07,624 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:51:07,626 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:51:07,626 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:51:07,626 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:51:07,627 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:51:07,627 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:51:07,627 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:51:07,628 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:51:07,628 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:51:07,628 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_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 60f6803c5e3744d9299e1af81cd011414f5ac623b556345642fa85a1d93686e4 [2023-11-19 07:51:07,948 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:51:07,981 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:51:07,984 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:51:07,986 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:51:07,986 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:51:07,988 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i [2023-11-19 07:51:11,022 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:51:11,476 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:51:11,478 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i [2023-11-19 07:51:11,499 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/bin/uautomizer-verify-uCwYo4JHxu/data/223571e39/0c43c90e363647d9acf22aa79c89a369/FLAGdf9139085 [2023-11-19 07:51:11,518 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/bin/uautomizer-verify-uCwYo4JHxu/data/223571e39/0c43c90e363647d9acf22aa79c89a369 [2023-11-19 07:51:11,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:51:11,523 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:51:11,524 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:51:11,524 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:51:11,538 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:51:11,539 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:51:11" (1/1) ... [2023-11-19 07:51:11,540 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c8d87db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:11, skipping insertion in model container [2023-11-19 07:51:11,540 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:51:11" (1/1) ... [2023-11-19 07:51:11,625 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:51:12,285 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:51:12,309 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 07:51:12,310 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7a30c0ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:12, skipping insertion in model container [2023-11-19 07:51:12,310 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:51:12,311 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 07:51:12,313 INFO L158 Benchmark]: Toolchain (without parser) took 789.33ms. Allocated memory is still 165.7MB. Free memory was 127.4MB in the beginning and 109.5MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 07:51:12,314 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 165.7MB. Free memory is still 133.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:51:12,315 INFO L158 Benchmark]: CACSL2BoogieTranslator took 786.45ms. Allocated memory is still 165.7MB. Free memory was 127.4MB in the beginning and 109.5MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 07:51:12,317 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 165.7MB. Free memory is still 133.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 786.45ms. Allocated memory is still 165.7MB. Free memory was 127.4MB in the beginning and 109.5MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 751]: 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_47b6815d-5c1e-41bc-bded-842ebe09c8aa/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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_47b6815d-5c1e-41bc-bded-842ebe09c8aa/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 60f6803c5e3744d9299e1af81cd011414f5ac623b556345642fa85a1d93686e4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:51:14,931 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:51:15,061 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-19 07:51:15,070 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:51:15,071 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:51:15,121 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:51:15,122 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:51:15,123 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:51:15,124 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:51:15,129 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:51:15,130 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:51:15,130 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:51:15,131 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:51:15,133 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:51:15,134 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:51:15,134 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:51:15,135 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:51:15,135 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:51:15,136 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:51:15,137 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:51:15,138 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:51:15,138 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:51:15,139 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:51:15,139 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 07:51:15,140 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 07:51:15,140 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:51:15,141 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:51:15,141 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:51:15,142 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:51:15,143 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:51:15,144 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:51:15,145 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:51:15,145 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:51:15,146 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:51:15,146 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-19 07:51:15,146 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 07:51:15,147 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:51:15,147 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:51:15,147 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:51:15,149 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-19 07:51:15,149 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:51:15,149 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_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 60f6803c5e3744d9299e1af81cd011414f5ac623b556345642fa85a1d93686e4 [2023-11-19 07:51:15,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:51:15,612 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:51:15,615 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:51:15,617 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:51:15,617 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:51:15,619 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i [2023-11-19 07:51:18,721 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:51:19,111 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:51:19,112 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i [2023-11-19 07:51:19,133 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/bin/uautomizer-verify-uCwYo4JHxu/data/ddd02dfd6/b7396bfc194e49b0a9f79ed4ef90127b/FLAG2e65fddfb [2023-11-19 07:51:19,149 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/bin/uautomizer-verify-uCwYo4JHxu/data/ddd02dfd6/b7396bfc194e49b0a9f79ed4ef90127b [2023-11-19 07:51:19,151 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:51:19,153 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:51:19,154 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:51:19,154 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:51:19,160 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:51:19,160 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:51:19" (1/1) ... [2023-11-19 07:51:19,161 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bbe55a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:19, skipping insertion in model container [2023-11-19 07:51:19,162 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:51:19" (1/1) ... [2023-11-19 07:51:19,244 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:51:19,884 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:51:19,915 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 07:51:19,932 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:51:20,041 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:51:20,047 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:51:20,167 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:51:20,227 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:51:20,227 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:20 WrapperNode [2023-11-19 07:51:20,227 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:51:20,228 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:51:20,229 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:51:20,229 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:51:20,241 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:20" (1/1) ... [2023-11-19 07:51:20,285 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:20" (1/1) ... [2023-11-19 07:51:20,389 INFO L138 Inliner]: procedures = 180, calls = 238, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 801 [2023-11-19 07:51:20,389 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:51:20,390 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:51:20,390 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:51:20,390 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:51:20,400 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:20" (1/1) ... [2023-11-19 07:51:20,400 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:20" (1/1) ... [2023-11-19 07:51:20,416 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:20" (1/1) ... [2023-11-19 07:51:20,416 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:20" (1/1) ... [2023-11-19 07:51:20,478 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:20" (1/1) ... [2023-11-19 07:51:20,488 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:20" (1/1) ... [2023-11-19 07:51:20,494 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:20" (1/1) ... [2023-11-19 07:51:20,499 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:20" (1/1) ... [2023-11-19 07:51:20,509 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:51:20,510 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:51:20,510 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:51:20,511 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:51:20,511 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:20" (1/1) ... [2023-11-19 07:51:20,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:51:20,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:51:20,568 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:51:20,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:51:20,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-19 07:51:20,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 07:51:20,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 07:51:20,610 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 07:51:20,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 07:51:20,612 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 07:51:20,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:51:20,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:51:20,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:51:20,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 07:51:20,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:51:20,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:51:20,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 07:51:20,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 07:51:20,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:51:20,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:51:20,846 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:51:20,849 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:51:20,853 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-19 07:51:25,109 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:51:25,124 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:51:25,124 INFO L302 CfgBuilder]: Removed 40 assume(true) statements. [2023-11-19 07:51:25,133 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:51:25 BoogieIcfgContainer [2023-11-19 07:51:25,133 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:51:25,135 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:51:25,135 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:51:25,139 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:51:25,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:51:19" (1/3) ... [2023-11-19 07:51:25,140 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b0b594c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:51:25, skipping insertion in model container [2023-11-19 07:51:25,140 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:20" (2/3) ... [2023-11-19 07:51:25,140 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b0b594c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:51:25, skipping insertion in model container [2023-11-19 07:51:25,140 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:51:25" (3/3) ... [2023-11-19 07:51:25,142 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test1-2.i [2023-11-19 07:51:25,162 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:51:25,162 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 435 error locations. [2023-11-19 07:51:25,240 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:51:25,248 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;@373d7c80, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:51:25,248 INFO L358 AbstractCegarLoop]: Starting to check reachability of 435 error locations. [2023-11-19 07:51:25,256 INFO L276 IsEmpty]: Start isEmpty. Operand has 874 states, 426 states have (on average 2.232394366197183) internal successors, (951), 868 states have internal predecessors, (951), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 07:51:25,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 07:51:25,263 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:25,264 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:51:25,264 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-19 07:51:25,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:25,270 INFO L85 PathProgramCache]: Analyzing trace with hash 37287509, now seen corresponding path program 1 times [2023-11-19 07:51:25,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:51:25,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [929191331] [2023-11-19 07:51:25,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:25,290 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 07:51:25,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:51:25,296 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:25,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:25,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:25,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:51:25,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:51:25,520 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 07:51:25,520 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:51:25,521 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:51:25,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [929191331] [2023-11-19 07:51:25,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [929191331] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:51:25,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:51:25,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:51:25,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889710350] [2023-11-19 07:51:25,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:51:25,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:51:25,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:51:25,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:51:25,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:51:25,561 INFO L87 Difference]: Start difference. First operand has 874 states, 426 states have (on average 2.232394366197183) internal successors, (951), 868 states have internal predecessors, (951), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:51:25,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:51:25,654 INFO L93 Difference]: Finished difference Result 864 states and 921 transitions. [2023-11-19 07:51:25,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:51:25,656 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-19 07:51:25,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:51:25,677 INFO L225 Difference]: With dead ends: 864 [2023-11-19 07:51:25,678 INFO L226 Difference]: Without dead ends: 862 [2023-11-19 07:51:25,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:51:25,683 INFO L413 NwaCegarLoop]: 921 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:51:25,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 921 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:51:25,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2023-11-19 07:51:25,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 862. [2023-11-19 07:51:25,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 420 states have (on average 2.126190476190476) internal successors, (893), 856 states have internal predecessors, (893), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 07:51:25,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 919 transitions. [2023-11-19 07:51:25,780 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 919 transitions. Word has length 5 [2023-11-19 07:51:25,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:25,781 INFO L495 AbstractCegarLoop]: Abstraction has 862 states and 919 transitions. [2023-11-19 07:51:25,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:51:25,781 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 919 transitions. [2023-11-19 07:51:25,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 07:51:25,782 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:25,782 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:51:25,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:25,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:25,985 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-19 07:51:25,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:25,986 INFO L85 PathProgramCache]: Analyzing trace with hash 37287571, now seen corresponding path program 1 times [2023-11-19 07:51:25,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:51:25,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [422258368] [2023-11-19 07:51:25,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:25,987 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 07:51:25,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:51:25,989 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:26,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:26,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:26,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:51:26,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:51:26,209 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 07:51:26,227 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 07:51:26,228 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:51:26,228 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:51:26,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [422258368] [2023-11-19 07:51:26,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [422258368] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:51:26,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:51:26,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:51:26,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594873184] [2023-11-19 07:51:26,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:51:26,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:51:26,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:51:26,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:51:26,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:51:26,238 INFO L87 Difference]: Start difference. First operand 862 states and 919 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:51:27,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:51:27,988 INFO L93 Difference]: Finished difference Result 823 states and 881 transitions. [2023-11-19 07:51:27,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:51:27,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-19 07:51:27,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:51:27,994 INFO L225 Difference]: With dead ends: 823 [2023-11-19 07:51:27,994 INFO L226 Difference]: Without dead ends: 823 [2023-11-19 07:51:27,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:51:27,996 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 598 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-19 07:51:27,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [611 Valid, 673 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-19 07:51:27,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2023-11-19 07:51:28,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 813. [2023-11-19 07:51:28,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 420 states have (on average 2.0095238095238095) internal successors, (844), 807 states have internal predecessors, (844), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 07:51:28,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 870 transitions. [2023-11-19 07:51:28,062 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 870 transitions. Word has length 5 [2023-11-19 07:51:28,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:28,063 INFO L495 AbstractCegarLoop]: Abstraction has 813 states and 870 transitions. [2023-11-19 07:51:28,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:51:28,063 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 870 transitions. [2023-11-19 07:51:28,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 07:51:28,064 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:28,064 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:51:28,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:28,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:28,274 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-19 07:51:28,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:28,275 INFO L85 PathProgramCache]: Analyzing trace with hash 37287572, now seen corresponding path program 1 times [2023-11-19 07:51:28,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:51:28,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [646165375] [2023-11-19 07:51:28,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:28,276 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:51:28,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:51:28,277 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:28,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:28,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:28,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:51:28,405 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:51:28,421 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 07:51:28,455 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 07:51:28,455 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:51:28,455 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:51:28,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [646165375] [2023-11-19 07:51:28,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [646165375] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:51:28,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:51:28,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:51:28,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616666696] [2023-11-19 07:51:28,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:51:28,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:51:28,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:51:28,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:51:28,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:51:28,458 INFO L87 Difference]: Start difference. First operand 813 states and 870 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:51:30,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:51:30,711 INFO L93 Difference]: Finished difference Result 883 states and 944 transitions. [2023-11-19 07:51:30,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:51:30,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-19 07:51:30,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:51:30,718 INFO L225 Difference]: With dead ends: 883 [2023-11-19 07:51:30,718 INFO L226 Difference]: Without dead ends: 883 [2023-11-19 07:51:30,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:51:30,720 INFO L413 NwaCegarLoop]: 745 mSDtfsCounter, 258 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 1074 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:51:30,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 1074 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-19 07:51:30,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2023-11-19 07:51:30,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 835. [2023-11-19 07:51:30,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 452 states have (on average 1.991150442477876) internal successors, (900), 829 states have internal predecessors, (900), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 07:51:30,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 926 transitions. [2023-11-19 07:51:30,812 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 926 transitions. Word has length 5 [2023-11-19 07:51:30,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:30,813 INFO L495 AbstractCegarLoop]: Abstraction has 835 states and 926 transitions. [2023-11-19 07:51:30,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:51:30,813 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 926 transitions. [2023-11-19 07:51:30,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 07:51:30,814 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:30,814 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:51:30,821 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:31,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:31,021 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr322REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-19 07:51:31,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:31,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1156737092, now seen corresponding path program 1 times [2023-11-19 07:51:31,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:51:31,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1408885656] [2023-11-19 07:51:31,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:31,023 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 07:51:31,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:51:31,024 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:31,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:31,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:31,113 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:51:31,114 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:51:31,129 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 07:51:31,129 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:51:31,129 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:51:31,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1408885656] [2023-11-19 07:51:31,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1408885656] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:51:31,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:51:31,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:51:31,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235237956] [2023-11-19 07:51:31,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:51:31,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:51:31,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:51:31,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:51:31,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:51:31,131 INFO L87 Difference]: Start difference. First operand 835 states and 926 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:51:31,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:51:31,237 INFO L93 Difference]: Finished difference Result 1419 states and 1570 transitions. [2023-11-19 07:51:31,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:51:31,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-19 07:51:31,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:51:31,252 INFO L225 Difference]: With dead ends: 1419 [2023-11-19 07:51:31,252 INFO L226 Difference]: Without dead ends: 1419 [2023-11-19 07:51:31,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:51:31,256 INFO L413 NwaCegarLoop]: 856 mSDtfsCounter, 571 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:51:31,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 1710 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:51:31,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2023-11-19 07:51:31,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 836. [2023-11-19 07:51:31,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 453 states have (on average 1.988962472406181) internal successors, (901), 830 states have internal predecessors, (901), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 07:51:31,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 927 transitions. [2023-11-19 07:51:31,291 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 927 transitions. Word has length 6 [2023-11-19 07:51:31,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:31,291 INFO L495 AbstractCegarLoop]: Abstraction has 836 states and 927 transitions. [2023-11-19 07:51:31,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:51:31,291 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 927 transitions. [2023-11-19 07:51:31,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 07:51:31,292 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:31,292 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:51:31,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:31,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:31,494 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-19 07:51:31,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:31,495 INFO L85 PathProgramCache]: Analyzing trace with hash 334651453, now seen corresponding path program 1 times [2023-11-19 07:51:31,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:51:31,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1997292425] [2023-11-19 07:51:31,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:31,496 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:51:31,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:51:31,497 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:31,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:31,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:31,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:51:31,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:51:31,656 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 07:51:31,657 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:51:31,657 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:51:31,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1997292425] [2023-11-19 07:51:31,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1997292425] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:51:31,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:51:31,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:51:31,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744229440] [2023-11-19 07:51:31,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:51:31,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:51:31,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:51:31,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:51:31,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:51:31,659 INFO L87 Difference]: Start difference. First operand 836 states and 927 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:51:31,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:51:31,705 INFO L93 Difference]: Finished difference Result 794 states and 884 transitions. [2023-11-19 07:51:31,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:51:31,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-19 07:51:31,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:51:31,716 INFO L225 Difference]: With dead ends: 794 [2023-11-19 07:51:31,716 INFO L226 Difference]: Without dead ends: 794 [2023-11-19 07:51:31,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:51:31,717 INFO L413 NwaCegarLoop]: 805 mSDtfsCounter, 81 mSDsluCounter, 733 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:51:31,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 1538 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:51:31,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2023-11-19 07:51:31,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 794. [2023-11-19 07:51:31,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 435 states have (on average 1.9724137931034482) internal successors, (858), 788 states have internal predecessors, (858), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 07:51:31,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 884 transitions. [2023-11-19 07:51:31,743 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 884 transitions. Word has length 11 [2023-11-19 07:51:31,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:31,744 INFO L495 AbstractCegarLoop]: Abstraction has 794 states and 884 transitions. [2023-11-19 07:51:31,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:51:31,744 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 884 transitions. [2023-11-19 07:51:31,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 07:51:31,745 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:31,745 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:51:31,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:31,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:31,948 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-19 07:51:31,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:31,948 INFO L85 PathProgramCache]: Analyzing trace with hash -522505033, now seen corresponding path program 1 times [2023-11-19 07:51:31,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:51:31,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1053887743] [2023-11-19 07:51:31,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:31,949 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 07:51:31,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:51:31,950 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:31,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:32,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:32,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:51:32,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:51:32,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:51:32,142 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:51:32,142 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:51:32,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1053887743] [2023-11-19 07:51:32,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1053887743] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:51:32,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:51:32,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:51:32,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112346008] [2023-11-19 07:51:32,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:51:32,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:51:32,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:51:32,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:51:32,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:51:32,147 INFO L87 Difference]: Start difference. First operand 794 states and 884 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:51:32,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:51:32,254 INFO L93 Difference]: Finished difference Result 773 states and 856 transitions. [2023-11-19 07:51:32,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:51:32,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-19 07:51:32,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:51:32,259 INFO L225 Difference]: With dead ends: 773 [2023-11-19 07:51:32,260 INFO L226 Difference]: Without dead ends: 773 [2023-11-19 07:51:32,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:51:32,261 INFO L413 NwaCegarLoop]: 760 mSDtfsCounter, 62 mSDsluCounter, 1486 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 2246 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:51:32,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 2246 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:51:32,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2023-11-19 07:51:32,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 772. [2023-11-19 07:51:32,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 427 states have (on average 1.9414519906323184) internal successors, (829), 766 states have internal predecessors, (829), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 07:51:32,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 855 transitions. [2023-11-19 07:51:32,286 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 855 transitions. Word has length 13 [2023-11-19 07:51:32,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:32,287 INFO L495 AbstractCegarLoop]: Abstraction has 772 states and 855 transitions. [2023-11-19 07:51:32,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:51:32,287 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 855 transitions. [2023-11-19 07:51:32,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 07:51:32,288 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:32,289 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:51:32,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:32,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:32,492 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-19 07:51:32,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:32,492 INFO L85 PathProgramCache]: Analyzing trace with hash -22216187, now seen corresponding path program 1 times [2023-11-19 07:51:32,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:51:32,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2041152013] [2023-11-19 07:51:32,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:32,493 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 07:51:32,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:51:32,494 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:32,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:32,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:32,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:51:32,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:51:32,655 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 07:51:32,765 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 07:51:32,765 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:51:32,765 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:51:32,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2041152013] [2023-11-19 07:51:32,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2041152013] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:51:32,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:51:32,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:51:32,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517111279] [2023-11-19 07:51:32,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:51:32,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:51:32,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:51:32,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:51:32,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:51:32,767 INFO L87 Difference]: Start difference. First operand 772 states and 855 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:51:34,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:51:34,950 INFO L93 Difference]: Finished difference Result 778 states and 862 transitions. [2023-11-19 07:51:34,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:51:34,951 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-11-19 07:51:34,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:51:34,956 INFO L225 Difference]: With dead ends: 778 [2023-11-19 07:51:34,957 INFO L226 Difference]: Without dead ends: 778 [2023-11-19 07:51:34,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:51:34,958 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 527 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:51:34,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [540 Valid, 958 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-19 07:51:34,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2023-11-19 07:51:34,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 768. [2023-11-19 07:51:34,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 768 states, 427 states have (on average 1.9320843091334894) internal successors, (825), 762 states have internal predecessors, (825), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 07:51:34,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 851 transitions. [2023-11-19 07:51:34,984 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 851 transitions. Word has length 27 [2023-11-19 07:51:34,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:34,985 INFO L495 AbstractCegarLoop]: Abstraction has 768 states and 851 transitions. [2023-11-19 07:51:34,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:51:34,985 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 851 transitions. [2023-11-19 07:51:34,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 07:51:34,986 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:34,987 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:51:34,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:35,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:35,190 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-19 07:51:35,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:35,191 INFO L85 PathProgramCache]: Analyzing trace with hash -22216186, now seen corresponding path program 1 times [2023-11-19 07:51:35,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:51:35,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1007736598] [2023-11-19 07:51:35,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:35,192 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 07:51:35,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:51:35,197 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:35,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:35,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:51:35,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:51:35,417 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 07:51:35,670 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 07:51:35,670 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:51:35,670 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:51:35,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1007736598] [2023-11-19 07:51:35,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1007736598] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:51:35,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:51:35,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:51:35,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150782487] [2023-11-19 07:51:35,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:51:35,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:51:35,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:51:35,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:51:35,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:51:35,672 INFO L87 Difference]: Start difference. First operand 768 states and 851 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:51:38,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:51:38,429 INFO L93 Difference]: Finished difference Result 812 states and 865 transitions. [2023-11-19 07:51:38,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:51:38,430 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-11-19 07:51:38,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:51:38,435 INFO L225 Difference]: With dead ends: 812 [2023-11-19 07:51:38,435 INFO L226 Difference]: Without dead ends: 812 [2023-11-19 07:51:38,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:51:38,436 INFO L413 NwaCegarLoop]: 699 mSDtfsCounter, 189 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 1396 SdHoareTripleChecker+Invalid, 799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-19 07:51:38,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 1396 Invalid, 799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-19 07:51:38,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2023-11-19 07:51:38,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 764. [2023-11-19 07:51:38,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 427 states have (on average 1.9227166276346603) internal successors, (821), 758 states have internal predecessors, (821), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 07:51:38,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 847 transitions. [2023-11-19 07:51:38,457 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 847 transitions. Word has length 27 [2023-11-19 07:51:38,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:38,457 INFO L495 AbstractCegarLoop]: Abstraction has 764 states and 847 transitions. [2023-11-19 07:51:38,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:51:38,458 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 847 transitions. [2023-11-19 07:51:38,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-19 07:51:38,459 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:38,459 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:51:38,469 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-11-19 07:51:38,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:38,663 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-19 07:51:38,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:38,663 INFO L85 PathProgramCache]: Analyzing trace with hash -125948801, now seen corresponding path program 1 times [2023-11-19 07:51:38,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:51:38,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2071155041] [2023-11-19 07:51:38,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:38,664 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:51:38,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:51:38,668 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:38,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:38,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:38,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:51:38,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:51:38,957 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 07:51:38,957 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:51:38,957 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:51:38,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2071155041] [2023-11-19 07:51:38,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2071155041] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:51:38,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:51:38,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:51:38,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406071213] [2023-11-19 07:51:38,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:51:38,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:51:38,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:51:38,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:51:38,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:51:38,961 INFO L87 Difference]: Start difference. First operand 764 states and 847 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:51:39,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:51:39,042 INFO L93 Difference]: Finished difference Result 758 states and 837 transitions. [2023-11-19 07:51:39,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:51:39,043 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2023-11-19 07:51:39,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:51:39,047 INFO L225 Difference]: With dead ends: 758 [2023-11-19 07:51:39,047 INFO L226 Difference]: Without dead ends: 758 [2023-11-19 07:51:39,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:51:39,072 INFO L413 NwaCegarLoop]: 754 mSDtfsCounter, 31 mSDsluCounter, 1470 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 2224 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:51:39,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 2224 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:51:39,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2023-11-19 07:51:39,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 758. [2023-11-19 07:51:39,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 758 states, 421 states have (on average 1.9263657957244655) internal successors, (811), 752 states have internal predecessors, (811), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 07:51:39,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 837 transitions. [2023-11-19 07:51:39,096 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 837 transitions. Word has length 43 [2023-11-19 07:51:39,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:39,098 INFO L495 AbstractCegarLoop]: Abstraction has 758 states and 837 transitions. [2023-11-19 07:51:39,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:51:39,098 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 837 transitions. [2023-11-19 07:51:39,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-19 07:51:39,103 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:39,103 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:51:39,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-19 07:51:39,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:39,308 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-19 07:51:39,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:39,319 INFO L85 PathProgramCache]: Analyzing trace with hash 796373579, now seen corresponding path program 1 times [2023-11-19 07:51:39,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:51:39,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1236661288] [2023-11-19 07:51:39,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:39,321 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 07:51:39,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:51:39,322 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:39,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:39,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:39,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:51:39,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:51:39,942 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 07:51:39,942 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:51:39,942 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:51:39,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1236661288] [2023-11-19 07:51:39,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1236661288] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:51:39,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:51:39,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:51:39,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623076445] [2023-11-19 07:51:39,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:51:39,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:51:39,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:51:39,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:51:39,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:51:39,945 INFO L87 Difference]: Start difference. First operand 758 states and 837 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:51:40,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:51:40,275 INFO L93 Difference]: Finished difference Result 1002 states and 1090 transitions. [2023-11-19 07:51:40,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:51:40,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-11-19 07:51:40,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:51:40,283 INFO L225 Difference]: With dead ends: 1002 [2023-11-19 07:51:40,283 INFO L226 Difference]: Without dead ends: 1002 [2023-11-19 07:51:40,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:51:40,284 INFO L413 NwaCegarLoop]: 841 mSDtfsCounter, 271 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:51:40,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 1476 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:51:40,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2023-11-19 07:51:40,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 805. [2023-11-19 07:51:40,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 468 states have (on average 1.8333333333333333) internal successors, (858), 799 states have internal predecessors, (858), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 07:51:40,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 884 transitions. [2023-11-19 07:51:40,309 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 884 transitions. Word has length 51 [2023-11-19 07:51:40,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:40,310 INFO L495 AbstractCegarLoop]: Abstraction has 805 states and 884 transitions. [2023-11-19 07:51:40,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:51:40,310 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 884 transitions. [2023-11-19 07:51:40,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-19 07:51:40,311 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:40,311 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:51:40,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:40,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:40,516 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-19 07:51:40,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:40,517 INFO L85 PathProgramCache]: Analyzing trace with hash -741532885, now seen corresponding path program 1 times [2023-11-19 07:51:40,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:51:40,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1658966166] [2023-11-19 07:51:40,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:40,518 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 07:51:40,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:51:40,519 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:40,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:40,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:40,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:51:40,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:51:40,951 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 07:51:40,959 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 07:51:41,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:51:41,640 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 07:51:41,661 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-19 07:51:41,662 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 07:51:41,684 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 07:51:41,685 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:51:41,685 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:51:41,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1658966166] [2023-11-19 07:51:41,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1658966166] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:51:41,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:51:41,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:51:41,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938797893] [2023-11-19 07:51:41,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:51:41,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:51:41,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:51:41,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:51:41,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:51:41,688 INFO L87 Difference]: Start difference. First operand 805 states and 884 transitions. Second operand has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:51:43,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:51:43,898 INFO L93 Difference]: Finished difference Result 777 states and 857 transitions. [2023-11-19 07:51:43,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:51:43,898 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-11-19 07:51:43,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:51:43,903 INFO L225 Difference]: With dead ends: 777 [2023-11-19 07:51:43,904 INFO L226 Difference]: Without dead ends: 777 [2023-11-19 07:51:43,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:51:43,905 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 399 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:51:43,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 691 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-19 07:51:43,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2023-11-19 07:51:43,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 735. [2023-11-19 07:51:43,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 436 states have (on average 1.7293577981651376) internal successors, (754), 729 states have internal predecessors, (754), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 07:51:43,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 780 transitions. [2023-11-19 07:51:43,925 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 780 transitions. Word has length 54 [2023-11-19 07:51:43,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:43,926 INFO L495 AbstractCegarLoop]: Abstraction has 735 states and 780 transitions. [2023-11-19 07:51:43,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:51:43,926 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 780 transitions. [2023-11-19 07:51:43,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-19 07:51:43,927 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:43,927 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:51:43,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-19 07:51:44,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:44,137 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-19 07:51:44,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:44,137 INFO L85 PathProgramCache]: Analyzing trace with hash -313883618, now seen corresponding path program 1 times [2023-11-19 07:51:44,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:51:44,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2108739584] [2023-11-19 07:51:44,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:44,138 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:51:44,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:51:44,140 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:44,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:44,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:44,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:51:44,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:51:44,444 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 07:51:44,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-19 07:51:44,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-19 07:51:44,531 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 07:51:44,532 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:51:44,532 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:51:44,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2108739584] [2023-11-19 07:51:44,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2108739584] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:51:44,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:51:44,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:51:44,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676415169] [2023-11-19 07:51:44,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:51:44,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:51:44,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:51:44,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:51:44,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:51:44,537 INFO L87 Difference]: Start difference. First operand 735 states and 780 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:51:47,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:51:47,163 INFO L93 Difference]: Finished difference Result 734 states and 779 transitions. [2023-11-19 07:51:47,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:51:47,164 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2023-11-19 07:51:47,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:51:47,169 INFO L225 Difference]: With dead ends: 734 [2023-11-19 07:51:47,169 INFO L226 Difference]: Without dead ends: 734 [2023-11-19 07:51:47,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:51:47,170 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 4 mSDsluCounter, 1143 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 1044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:51:47,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1870 Invalid, 1044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1043 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-19 07:51:47,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2023-11-19 07:51:47,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 734. [2023-11-19 07:51:47,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 436 states have (on average 1.7270642201834863) internal successors, (753), 728 states have internal predecessors, (753), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 07:51:47,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 779 transitions. [2023-11-19 07:51:47,189 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 779 transitions. Word has length 59 [2023-11-19 07:51:47,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:47,190 INFO L495 AbstractCegarLoop]: Abstraction has 734 states and 779 transitions. [2023-11-19 07:51:47,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:51:47,191 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 779 transitions. [2023-11-19 07:51:47,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-19 07:51:47,193 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:47,194 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:51:47,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:47,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:47,398 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-19 07:51:47,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:47,399 INFO L85 PathProgramCache]: Analyzing trace with hash -313883617, now seen corresponding path program 1 times [2023-11-19 07:51:47,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:51:47,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [493855655] [2023-11-19 07:51:47,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:47,400 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 07:51:47,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:51:47,401 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:47,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:47,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:47,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 07:51:47,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:51:47,696 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 07:51:47,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-19 07:51:47,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-19 07:51:47,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-11-19 07:51:47,833 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 07:51:47,833 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:51:47,833 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:51:47,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [493855655] [2023-11-19 07:51:47,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [493855655] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:51:47,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:51:47,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:51:47,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459523719] [2023-11-19 07:51:47,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:51:47,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:51:47,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:51:47,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:51:47,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:51:47,837 INFO L87 Difference]: Start difference. First operand 734 states and 779 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:51:51,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:51:51,081 INFO L93 Difference]: Finished difference Result 733 states and 778 transitions. [2023-11-19 07:51:51,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:51:51,082 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2023-11-19 07:51:51,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:51:51,085 INFO L225 Difference]: With dead ends: 733 [2023-11-19 07:51:51,085 INFO L226 Difference]: Without dead ends: 733 [2023-11-19 07:51:51,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:51:51,087 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 2 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1896 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:51:51,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1896 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-19 07:51:51,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2023-11-19 07:51:51,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 733. [2023-11-19 07:51:51,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 435 states have (on average 1.728735632183908) internal successors, (752), 727 states have internal predecessors, (752), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 07:51:51,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 778 transitions. [2023-11-19 07:51:51,106 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 778 transitions. Word has length 59 [2023-11-19 07:51:51,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:51,106 INFO L495 AbstractCegarLoop]: Abstraction has 733 states and 778 transitions. [2023-11-19 07:51:51,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:51:51,106 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 778 transitions. [2023-11-19 07:51:51,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-19 07:51:51,108 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:51,108 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:51:51,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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)] Forceful destruction successful, exit code 0 [2023-11-19 07:51:51,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:51,313 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-19 07:51:51,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:51,313 INFO L85 PathProgramCache]: Analyzing trace with hash 32368709, now seen corresponding path program 1 times [2023-11-19 07:51:51,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:51:51,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [223412287] [2023-11-19 07:51:51,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:51,314 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 07:51:51,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:51:51,316 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:51,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 (15)] Waiting until timeout for monitored process [2023-11-19 07:51:51,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:51,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:51:51,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:51:51,639 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 07:51:51,639 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:51:51,639 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:51:51,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [223412287] [2023-11-19 07:51:51,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [223412287] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:51:51,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:51:51,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:51:51,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797401609] [2023-11-19 07:51:51,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:51:51,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:51:51,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:51:51,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:51:51,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:51:51,642 INFO L87 Difference]: Start difference. First operand 733 states and 778 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:51:51,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:51:51,699 INFO L93 Difference]: Finished difference Result 736 states and 782 transitions. [2023-11-19 07:51:51,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:51:51,701 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 67 [2023-11-19 07:51:51,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:51:51,706 INFO L225 Difference]: With dead ends: 736 [2023-11-19 07:51:51,706 INFO L226 Difference]: Without dead ends: 736 [2023-11-19 07:51:51,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 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 07:51:51,707 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 2 mSDsluCounter, 1449 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2176 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:51:51,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2176 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:51:51,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2023-11-19 07:51:51,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 736. [2023-11-19 07:51:51,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 437 states have (on average 1.7276887871853548) internal successors, (755), 730 states have internal predecessors, (755), 13 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-19 07:51:51,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 782 transitions. [2023-11-19 07:51:51,726 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 782 transitions. Word has length 67 [2023-11-19 07:51:51,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:51,726 INFO L495 AbstractCegarLoop]: Abstraction has 736 states and 782 transitions. [2023-11-19 07:51:51,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:51:51,727 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 782 transitions. [2023-11-19 07:51:51,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-19 07:51:51,727 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:51,728 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:51:51,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 (15)] Forceful destruction successful, exit code 0 [2023-11-19 07:51:51,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:51,936 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-19 07:51:51,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:51,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1983237716, now seen corresponding path program 1 times [2023-11-19 07:51:51,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:51:51,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1262782902] [2023-11-19 07:51:51,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:51,937 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 07:51:51,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:51:51,938 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:51,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 (16)] Waiting until timeout for monitored process [2023-11-19 07:51:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:52,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:51:52,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:51:52,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:51:52,271 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:51:52,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:51:52,358 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:51:52,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1262782902] [2023-11-19 07:51:52,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1262782902] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:51:52,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:51:52,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-19 07:51:52,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903491538] [2023-11-19 07:51:52,359 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:51:52,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:51:52,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:51:52,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:51:52,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:51:52,366 INFO L87 Difference]: Start difference. First operand 736 states and 782 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:51:52,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:51:52,592 INFO L93 Difference]: Finished difference Result 748 states and 799 transitions. [2023-11-19 07:51:52,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:51:52,593 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 68 [2023-11-19 07:51:52,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:51:52,597 INFO L225 Difference]: With dead ends: 748 [2023-11-19 07:51:52,597 INFO L226 Difference]: Without dead ends: 748 [2023-11-19 07:51:52,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:51:52,598 INFO L413 NwaCegarLoop]: 728 mSDtfsCounter, 9 mSDsluCounter, 3615 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 4343 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:51:52,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 4343 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:51:52,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2023-11-19 07:51:52,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 746. [2023-11-19 07:51:52,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 446 states have (on average 1.7264573991031391) internal successors, (770), 739 states have internal predecessors, (770), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-19 07:51:52,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 797 transitions. [2023-11-19 07:51:52,617 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 797 transitions. Word has length 68 [2023-11-19 07:51:52,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:52,618 INFO L495 AbstractCegarLoop]: Abstraction has 746 states and 797 transitions. [2023-11-19 07:51:52,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:51:52,618 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 797 transitions. [2023-11-19 07:51:52,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-19 07:51:52,619 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:52,619 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:51:52,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 (16)] Forceful destruction successful, exit code 0 [2023-11-19 07:51:52,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:52,826 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-19 07:51:52,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:52,826 INFO L85 PathProgramCache]: Analyzing trace with hash 996706821, now seen corresponding path program 2 times [2023-11-19 07:51:52,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:51:52,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1425110024] [2023-11-19 07:51:52,826 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:51:52,826 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 07:51:52,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:51:52,827 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:52,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 (17)] Waiting until timeout for monitored process [2023-11-19 07:51:53,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:51:53,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:51:53,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:51:53,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:51:53,336 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:51:53,337 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:51:53,568 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:51:53,568 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:51:53,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1425110024] [2023-11-19 07:51:53,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1425110024] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:51:53,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:51:53,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-19 07:51:53,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830406094] [2023-11-19 07:51:53,580 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:51:53,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:51:53,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:51:53,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:51:53,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:51:53,582 INFO L87 Difference]: Start difference. First operand 746 states and 797 transitions. Second operand has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 14 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:51:54,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:51:54,338 INFO L93 Difference]: Finished difference Result 767 states and 826 transitions. [2023-11-19 07:51:54,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-19 07:51:54,339 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 14 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 71 [2023-11-19 07:51:54,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:51:54,343 INFO L225 Difference]: With dead ends: 767 [2023-11-19 07:51:54,343 INFO L226 Difference]: Without dead ends: 761 [2023-11-19 07:51:54,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=217, Invalid=383, Unknown=0, NotChecked=0, Total=600 [2023-11-19 07:51:54,344 INFO L413 NwaCegarLoop]: 730 mSDtfsCounter, 27 mSDsluCounter, 3631 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 4361 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:51:54,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 4361 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:51:54,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2023-11-19 07:51:54,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 755. [2023-11-19 07:51:54,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 455 states have (on average 1.7164835164835164) internal successors, (781), 748 states have internal predecessors, (781), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-19 07:51:54,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 808 transitions. [2023-11-19 07:51:54,364 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 808 transitions. Word has length 71 [2023-11-19 07:51:54,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:54,365 INFO L495 AbstractCegarLoop]: Abstraction has 755 states and 808 transitions. [2023-11-19 07:51:54,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 14 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:51:54,365 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 808 transitions. [2023-11-19 07:51:54,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-19 07:51:54,366 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:54,366 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:51:54,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 (17)] Forceful destruction successful, exit code 0 [2023-11-19 07:51:54,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:54,572 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-19 07:51:54,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:54,573 INFO L85 PathProgramCache]: Analyzing trace with hash -256206683, now seen corresponding path program 3 times [2023-11-19 07:51:54,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:51:54,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1505662582] [2023-11-19 07:51:54,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 07:51:54,573 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 07:51:54,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:51:54,574 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:54,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 (18)] Waiting until timeout for monitored process [2023-11-19 07:51:55,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-19 07:51:55,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:51:55,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-19 07:51:55,260 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:51:55,470 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:51:55,470 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:51:56,355 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:51:56,356 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:51:56,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1505662582] [2023-11-19 07:51:56,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1505662582] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:51:56,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:51:56,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-11-19 07:51:56,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404041155] [2023-11-19 07:51:56,357 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:51:56,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-19 07:51:56,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:51:56,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-19 07:51:56,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2023-11-19 07:51:56,359 INFO L87 Difference]: Start difference. First operand 755 states and 808 transitions. Second operand has 26 states, 26 states have (on average 3.3846153846153846) internal successors, (88), 26 states have internal predecessors, (88), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:51:59,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:51:59,205 INFO L93 Difference]: Finished difference Result 795 states and 870 transitions. [2023-11-19 07:51:59,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-19 07:51:59,206 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3846153846153846) internal successors, (88), 26 states have internal predecessors, (88), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 77 [2023-11-19 07:51:59,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:51:59,212 INFO L225 Difference]: With dead ends: 795 [2023-11-19 07:51:59,212 INFO L226 Difference]: Without dead ends: 789 [2023-11-19 07:51:59,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=793, Invalid=1559, Unknown=0, NotChecked=0, Total=2352 [2023-11-19 07:51:59,214 INFO L413 NwaCegarLoop]: 735 mSDtfsCounter, 53 mSDsluCounter, 8041 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 8776 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:51:59,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 8776 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-19 07:51:59,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2023-11-19 07:51:59,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 773. [2023-11-19 07:51:59,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 773 states, 473 states have (on average 1.6997885835095137) internal successors, (804), 766 states have internal predecessors, (804), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-19 07:51:59,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 831 transitions. [2023-11-19 07:51:59,239 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 831 transitions. Word has length 77 [2023-11-19 07:51:59,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:51:59,240 INFO L495 AbstractCegarLoop]: Abstraction has 773 states and 831 transitions. [2023-11-19 07:51:59,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3846153846153846) internal successors, (88), 26 states have internal predecessors, (88), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:51:59,241 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 831 transitions. [2023-11-19 07:51:59,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-19 07:51:59,241 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:51:59,242 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:51:59,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 (18)] Forceful destruction successful, exit code 0 [2023-11-19 07:51:59,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:59,450 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2023-11-19 07:51:59,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:59,450 INFO L85 PathProgramCache]: Analyzing trace with hash 239095269, now seen corresponding path program 4 times [2023-11-19 07:51:59,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:51:59,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [933701623] [2023-11-19 07:51:59,451 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 07:51:59,451 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 07:51:59,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:51:59,452 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 07:51:59,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b6815d-5c1e-41bc-bded-842ebe09c8aa/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 (19)] Waiting until timeout for monitored process [2023-11-19 07:51:59,916 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 07:51:59,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:51:59,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-19 07:51:59,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:52:00,460 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:52:00,460 INFO L327 TraceCheckSpWp]: Computing backward predicates...