./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test18_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_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test18_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 27e059eb1633b1ab9c045484375455e2667fa3360a55d0bc53eccfa53fe7600f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:54:45,046 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:54:45,169 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:54:45,177 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:54:45,182 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:54:45,208 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:54:45,209 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:54:45,210 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:54:45,211 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:54:45,211 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:54:45,212 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:54:45,213 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:54:45,213 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:54:45,214 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:54:45,215 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:54:45,215 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:54:45,216 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:54:45,216 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:54:45,217 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:54:45,218 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:54:45,218 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:54:45,219 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:54:45,219 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:54:45,220 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:54:45,221 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:54:45,221 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:54:45,222 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:54:45,222 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:54:45,223 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:54:45,223 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:54:45,224 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:54:45,225 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:54:45,225 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:54:45,226 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:54:45,226 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:54:45,227 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:54:45,227 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:54:45,228 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:54:45,228 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_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 27e059eb1633b1ab9c045484375455e2667fa3360a55d0bc53eccfa53fe7600f [2023-11-19 07:54:45,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:54:45,585 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:54:45,597 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:54:45,598 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:54:45,599 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:54:45,601 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/ldv-memsafety/memleaks_test18_2.i [2023-11-19 07:54:48,651 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:54:48,954 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:54:48,955 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/sv-benchmarks/c/ldv-memsafety/memleaks_test18_2.i [2023-11-19 07:54:48,972 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu/data/243be191f/956b8d7fdd7a4471987e0391a864d739/FLAG11005cdcf [2023-11-19 07:54:48,988 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu/data/243be191f/956b8d7fdd7a4471987e0391a864d739 [2023-11-19 07:54:48,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:54:48,992 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:54:48,994 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:54:48,994 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:54:49,008 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:54:49,012 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:54:48" (1/1) ... [2023-11-19 07:54:49,013 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32d0939b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:49, skipping insertion in model container [2023-11-19 07:54:49,013 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:54:48" (1/1) ... [2023-11-19 07:54:49,091 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:54:49,601 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:54:49,627 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 07:54:49,627 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@175637ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:49, skipping insertion in model container [2023-11-19 07:54:49,627 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:54:49,628 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 07:54:49,631 INFO L158 Benchmark]: Toolchain (without parser) took 637.22ms. Allocated memory is still 140.5MB. Free memory was 103.7MB in the beginning and 89.1MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 07:54:49,632 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 111.1MB. Free memory is still 83.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:54:49,633 INFO L158 Benchmark]: CACSL2BoogieTranslator took 633.87ms. Allocated memory is still 140.5MB. Free memory was 103.2MB in the beginning and 89.1MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 07:54:49,634 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 111.1MB. Free memory is still 83.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 633.87ms. Allocated memory is still 140.5MB. Free memory was 103.2MB in the beginning and 89.1MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: 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_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test18_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 27e059eb1633b1ab9c045484375455e2667fa3360a55d0bc53eccfa53fe7600f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:54:52,125 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:54:52,204 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-19 07:54:52,210 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:54:52,211 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:54:52,238 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:54:52,239 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:54:52,240 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:54:52,241 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:54:52,241 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:54:52,242 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:54:52,243 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:54:52,244 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:54:52,244 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:54:52,245 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:54:52,246 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:54:52,246 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:54:52,247 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:54:52,248 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:54:52,248 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:54:52,249 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:54:52,250 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:54:52,250 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:54:52,251 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 07:54:52,251 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 07:54:52,252 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:54:52,253 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:54:52,253 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:54:52,254 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:54:52,254 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:54:52,255 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:54:52,255 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:54:52,256 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:54:52,256 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:54:52,256 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-19 07:54:52,257 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 07:54:52,257 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:54:52,258 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:54:52,258 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:54:52,259 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-19 07:54:52,259 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:54:52,260 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_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 27e059eb1633b1ab9c045484375455e2667fa3360a55d0bc53eccfa53fe7600f [2023-11-19 07:54:52,685 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:54:52,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:54:52,718 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:54:52,720 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:54:52,722 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:54:52,724 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/ldv-memsafety/memleaks_test18_2.i [2023-11-19 07:54:56,262 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:54:56,635 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:54:56,636 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/sv-benchmarks/c/ldv-memsafety/memleaks_test18_2.i [2023-11-19 07:54:56,662 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu/data/4c3bf191d/e388a95ca59b40c5862784fadcff0a57/FLAGf5b441d47 [2023-11-19 07:54:56,682 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu/data/4c3bf191d/e388a95ca59b40c5862784fadcff0a57 [2023-11-19 07:54:56,686 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:54:56,687 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:54:56,690 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:54:56,690 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:54:56,695 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:54:56,699 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:54:56" (1/1) ... [2023-11-19 07:54:56,700 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4def1507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:56, skipping insertion in model container [2023-11-19 07:54:56,701 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:54:56" (1/1) ... [2023-11-19 07:54:56,780 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:54:57,203 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:54:57,238 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 07:54:57,256 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:54:57,314 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:54:57,329 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:54:57,394 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:54:57,445 WARN L675 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:54:57,453 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:54:57,454 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:57 WrapperNode [2023-11-19 07:54:57,454 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:54:57,455 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:54:57,455 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:54:57,455 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:54:57,463 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:57" (1/1) ... [2023-11-19 07:54:57,506 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:57" (1/1) ... [2023-11-19 07:54:57,542 INFO L138 Inliner]: procedures = 165, calls = 73, calls flagged for inlining = 21, calls inlined = 3, statements flattened = 53 [2023-11-19 07:54:57,561 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:54:57,562 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:54:57,563 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:54:57,563 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:54:57,572 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:57" (1/1) ... [2023-11-19 07:54:57,573 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:57" (1/1) ... [2023-11-19 07:54:57,589 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:57" (1/1) ... [2023-11-19 07:54:57,590 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:57" (1/1) ... [2023-11-19 07:54:57,598 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:57" (1/1) ... [2023-11-19 07:54:57,614 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:57" (1/1) ... [2023-11-19 07:54:57,616 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:57" (1/1) ... [2023-11-19 07:54:57,618 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:57" (1/1) ... [2023-11-19 07:54:57,621 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:54:57,622 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:54:57,622 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:54:57,622 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:54:57,623 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:57" (1/1) ... [2023-11-19 07:54:57,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:54:57,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:57,663 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:54:57,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:54:57,713 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 07:54:57,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 07:54:57,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:54:57,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:54:57,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 07:54:57,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:54:57,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:54:57,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 07:54:57,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:54:57,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:54:57,852 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:54:57,854 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:54:58,151 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:54:58,160 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:54:58,161 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:54:58,165 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:54:58 BoogieIcfgContainer [2023-11-19 07:54:58,165 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:54:58,168 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:54:58,168 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:54:58,172 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:54:58,173 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:54:56" (1/3) ... [2023-11-19 07:54:58,174 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65c9a3ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:54:58, skipping insertion in model container [2023-11-19 07:54:58,174 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:57" (2/3) ... [2023-11-19 07:54:58,174 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65c9a3ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:54:58, skipping insertion in model container [2023-11-19 07:54:58,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:54:58" (3/3) ... [2023-11-19 07:54:58,176 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test18_2.i [2023-11-19 07:54:58,200 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:54:58,200 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-19 07:54:58,260 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:54:58,270 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;@178751d7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:54:58,272 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-19 07:54:58,277 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 25 states have (on average 1.72) internal successors, (43), 36 states have internal predecessors, (43), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:54:58,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 07:54:58,289 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:58,290 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:58,291 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-19 07:54:58,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:58,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1121226903, now seen corresponding path program 1 times [2023-11-19 07:54:58,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:54:58,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [226774209] [2023-11-19 07:54:58,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:58,329 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 07:54:58,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:54:58,335 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 07:54:58,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 07:54:58,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:58,492 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:54:58,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:58,611 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 07:54:58,612 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:54:58,613 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:54:58,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [226774209] [2023-11-19 07:54:58,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [226774209] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:58,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:58,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:54:58,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600133887] [2023-11-19 07:54:58,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:58,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:54:58,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:54:58,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:54:58,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:54:58,661 INFO L87 Difference]: Start difference. First operand has 40 states, 25 states have (on average 1.72) internal successors, (43), 36 states have internal predecessors, (43), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 07:54:58,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:58,839 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2023-11-19 07:54:58,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:54:58,842 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 11 [2023-11-19 07:54:58,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:58,853 INFO L225 Difference]: With dead ends: 70 [2023-11-19 07:54:58,853 INFO L226 Difference]: Without dead ends: 68 [2023-11-19 07:54:58,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:54:58,860 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 28 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:58,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 208 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:54:58,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-11-19 07:54:58,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 42. [2023-11-19 07:54:58,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 37 states have internal predecessors, (42), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 07:54:58,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2023-11-19 07:54:58,918 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 11 [2023-11-19 07:54:58,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:58,918 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2023-11-19 07:54:58,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 07:54:58,919 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2023-11-19 07:54:58,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 07:54:58,920 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:58,921 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:58,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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)] Ended with exit code 0 [2023-11-19 07:54:59,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 07:54:59,124 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-19 07:54:59,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:59,125 INFO L85 PathProgramCache]: Analyzing trace with hash 2008730584, now seen corresponding path program 1 times [2023-11-19 07:54:59,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:54:59,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1114252239] [2023-11-19 07:54:59,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:59,127 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 07:54:59,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:54:59,129 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 07:54:59,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 07:54:59,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:59,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:54:59,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:59,305 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 07:54:59,305 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:54:59,306 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:54:59,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1114252239] [2023-11-19 07:54:59,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1114252239] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:59,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:59,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:54:59,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148320645] [2023-11-19 07:54:59,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:59,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:54:59,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:54:59,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:54:59,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:54:59,310 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 07:54:59,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:59,420 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2023-11-19 07:54:59,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:54:59,421 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 11 [2023-11-19 07:54:59,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:59,423 INFO L225 Difference]: With dead ends: 69 [2023-11-19 07:54:59,423 INFO L226 Difference]: Without dead ends: 67 [2023-11-19 07:54:59,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:54:59,425 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 26 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:59,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 145 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:54:59,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-11-19 07:54:59,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 48. [2023-11-19 07:54:59,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 32 states have (on average 1.53125) internal successors, (49), 42 states have internal predecessors, (49), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-19 07:54:59,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2023-11-19 07:54:59,434 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 11 [2023-11-19 07:54:59,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:59,435 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2023-11-19 07:54:59,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 07:54:59,435 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2023-11-19 07:54:59,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 07:54:59,436 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:59,436 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:59,441 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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)] Ended with exit code 0 [2023-11-19 07:54:59,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 07:54:59,639 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-19 07:54:59,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:59,640 INFO L85 PathProgramCache]: Analyzing trace with hash 398308128, now seen corresponding path program 1 times [2023-11-19 07:54:59,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:54:59,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [459028976] [2023-11-19 07:54:59,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:59,641 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:54:59,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:54:59,642 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 07:54:59,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 07:54:59,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:59,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:54:59,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:59,767 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 07:54:59,767 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:54:59,768 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:54:59,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [459028976] [2023-11-19 07:54:59,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [459028976] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:59,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:59,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:54:59,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849186086] [2023-11-19 07:54:59,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:59,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:54:59,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:54:59,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:54:59,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:54:59,771 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 07:54:59,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:59,846 INFO L93 Difference]: Finished difference Result 81 states and 100 transitions. [2023-11-19 07:54:59,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:54:59,848 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 12 [2023-11-19 07:54:59,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:59,854 INFO L225 Difference]: With dead ends: 81 [2023-11-19 07:54:59,855 INFO L226 Difference]: Without dead ends: 81 [2023-11-19 07:54:59,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 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 07:54:59,861 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 55 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:59,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 75 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:54:59,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-11-19 07:54:59,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 49. [2023-11-19 07:54:59,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 43 states have internal predecessors, (50), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-19 07:54:59,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 59 transitions. [2023-11-19 07:54:59,901 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 59 transitions. Word has length 12 [2023-11-19 07:54:59,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:59,902 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 59 transitions. [2023-11-19 07:54:59,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 07:54:59,902 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2023-11-19 07:54:59,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-19 07:54:59,905 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:59,905 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:59,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:55:00,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 07:55:00,108 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-19 07:55:00,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:00,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1387011810, now seen corresponding path program 1 times [2023-11-19 07:55:00,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:55:00,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [46331728] [2023-11-19 07:55:00,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:00,110 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 07:55:00,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:55:00,118 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 07:55:00,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 07:55:00,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:00,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 07:55:00,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:00,244 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 07:55:00,455 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-19 07:55:00,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-19 07:55:00,478 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:55:00,478 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:55:06,851 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:55:06,851 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:55:06,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [46331728] [2023-11-19 07:55:06,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [46331728] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:55:06,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:55:06,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-11-19 07:55:06,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610359668] [2023-11-19 07:55:06,853 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:55:06,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:55:06,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:55:06,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:55:06,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=49, Unknown=3, NotChecked=0, Total=72 [2023-11-19 07:55:06,855 INFO L87 Difference]: Start difference. First operand 49 states and 59 transitions. Second operand has 9 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 07:55:07,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:07,102 INFO L93 Difference]: Finished difference Result 68 states and 84 transitions. [2023-11-19 07:55:07,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:55:07,103 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 18 [2023-11-19 07:55:07,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:07,105 INFO L225 Difference]: With dead ends: 68 [2023-11-19 07:55:07,105 INFO L226 Difference]: Without dead ends: 68 [2023-11-19 07:55:07,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=26, Invalid=61, Unknown=3, NotChecked=0, Total=90 [2023-11-19 07:55:07,106 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 22 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:07,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 108 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:55:07,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-11-19 07:55:07,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 63. [2023-11-19 07:55:07,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 46 states have (on average 1.5434782608695652) internal successors, (71), 55 states have internal predecessors, (71), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-19 07:55:07,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 83 transitions. [2023-11-19 07:55:07,120 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 83 transitions. Word has length 18 [2023-11-19 07:55:07,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:07,121 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 83 transitions. [2023-11-19 07:55:07,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 07:55:07,121 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 83 transitions. [2023-11-19 07:55:07,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-19 07:55:07,122 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:07,123 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:07,129 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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)] Ended with exit code 0 [2023-11-19 07:55:07,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 07:55:07,325 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-19 07:55:07,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:07,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1387011811, now seen corresponding path program 1 times [2023-11-19 07:55:07,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:55:07,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2013371280] [2023-11-19 07:55:07,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:07,327 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 07:55:07,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:55:07,330 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 07:55:07,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 07:55:07,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:07,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-19 07:55:07,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:07,441 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 07:55:07,451 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 07:55:07,743 WARN L876 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|))) is different from true [2023-11-19 07:55:07,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:55:07,792 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 07:55:07,807 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-19 07:55:07,808 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 07:55:07,882 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-11-19 07:55:07,882 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:55:08,362 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:55:08,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2013371280] [2023-11-19 07:55:08,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2013371280] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:55:08,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1709383475] [2023-11-19 07:55:08,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:08,363 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 07:55:08,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu/cvc4 [2023-11-19 07:55:08,368 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 07:55:08,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-11-19 07:55:08,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:08,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-19 07:55:08,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:08,512 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 07:55:08,522 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 07:55:08,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:55:08,680 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 07:55:08,694 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-19 07:55:08,694 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 07:55:08,743 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-11-19 07:55:08,743 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:55:09,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1709383475] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:55:09,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:55:09,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2023-11-19 07:55:09,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185073015] [2023-11-19 07:55:09,094 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:55:09,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:55:09,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:55:09,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:55:09,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=88, Unknown=1, NotChecked=18, Total=132 [2023-11-19 07:55:09,096 INFO L87 Difference]: Start difference. First operand 63 states and 83 transitions. Second operand has 10 states, 8 states have (on average 1.75) internal successors, (14), 9 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:55:09,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:09,836 INFO L93 Difference]: Finished difference Result 102 states and 131 transitions. [2023-11-19 07:55:09,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:55:09,837 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 1.75) internal successors, (14), 9 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2023-11-19 07:55:09,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:09,839 INFO L225 Difference]: With dead ends: 102 [2023-11-19 07:55:09,839 INFO L226 Difference]: Without dead ends: 102 [2023-11-19 07:55:09,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=50, Invalid=193, Unknown=1, NotChecked=28, Total=272 [2023-11-19 07:55:09,841 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 95 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 86 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:09,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 147 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 219 Invalid, 0 Unknown, 86 Unchecked, 0.5s Time] [2023-11-19 07:55:09,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-11-19 07:55:09,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 78. [2023-11-19 07:55:09,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 60 states have (on average 1.5666666666666667) internal successors, (94), 69 states have internal predecessors, (94), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-19 07:55:09,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 109 transitions. [2023-11-19 07:55:09,854 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 109 transitions. Word has length 18 [2023-11-19 07:55:09,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:09,854 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 109 transitions. [2023-11-19 07:55:09,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 1.75) internal successors, (14), 9 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:55:09,855 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 109 transitions. [2023-11-19 07:55:09,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-19 07:55:09,856 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:09,856 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:09,864 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2023-11-19 07:55:10,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 07:55:10,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 07:55:10,259 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-19 07:55:10,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:10,259 INFO L85 PathProgramCache]: Analyzing trace with hash 881453185, now seen corresponding path program 1 times [2023-11-19 07:55:10,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:55:10,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [646269392] [2023-11-19 07:55:10,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:10,260 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 07:55:10,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:55:10,261 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 07:55:10,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 07:55:10,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:10,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:55:10,322 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:10,401 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:55:10,401 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:55:10,402 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:55:10,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [646269392] [2023-11-19 07:55:10,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [646269392] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:10,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:10,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:55:10,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203279828] [2023-11-19 07:55:10,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:10,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:55:10,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:55:10,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:55:10,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:55:10,404 INFO L87 Difference]: Start difference. First operand 78 states and 109 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:55:10,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:10,475 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2023-11-19 07:55:10,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:55:10,476 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2023-11-19 07:55:10,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:10,477 INFO L225 Difference]: With dead ends: 62 [2023-11-19 07:55:10,477 INFO L226 Difference]: Without dead ends: 60 [2023-11-19 07:55:10,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:55:10,478 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:10,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 154 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:55:10,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-11-19 07:55:10,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2023-11-19 07:55:10,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 45 states have (on average 1.5777777777777777) internal successors, (71), 55 states have internal predecessors, (71), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-19 07:55:10,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 79 transitions. [2023-11-19 07:55:10,486 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 79 transitions. Word has length 18 [2023-11-19 07:55:10,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:10,486 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 79 transitions. [2023-11-19 07:55:10,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:55:10,486 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 79 transitions. [2023-11-19 07:55:10,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-19 07:55:10,487 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:10,487 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:10,493 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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)] Ended with exit code 0 [2023-11-19 07:55:10,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 07:55:10,688 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-19 07:55:10,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:10,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1478437295, now seen corresponding path program 1 times [2023-11-19 07:55:10,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:55:10,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2002237283] [2023-11-19 07:55:10,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:10,690 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 07:55:10,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:55:10,690 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 07:55:10,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 07:55:10,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:10,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:55:10,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:10,791 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:55:10,791 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:55:10,791 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:55:10,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2002237283] [2023-11-19 07:55:10,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2002237283] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:10,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:10,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:55:10,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453622592] [2023-11-19 07:55:10,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:10,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:55:10,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:55:10,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:55:10,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:55:10,795 INFO L87 Difference]: Start difference. First operand 60 states and 79 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:55:10,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:10,857 INFO L93 Difference]: Finished difference Result 73 states and 95 transitions. [2023-11-19 07:55:10,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:55:10,858 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2023-11-19 07:55:10,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:10,859 INFO L225 Difference]: With dead ends: 73 [2023-11-19 07:55:10,859 INFO L226 Difference]: Without dead ends: 73 [2023-11-19 07:55:10,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:55:10,860 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 6 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:10,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 154 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:55:10,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-19 07:55:10,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 64. [2023-11-19 07:55:10,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 49 states have (on average 1.530612244897959) internal successors, (75), 57 states have internal predecessors, (75), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-19 07:55:10,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 83 transitions. [2023-11-19 07:55:10,878 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 83 transitions. Word has length 20 [2023-11-19 07:55:10,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:10,881 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 83 transitions. [2023-11-19 07:55:10,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:55:10,882 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 83 transitions. [2023-11-19 07:55:10,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-19 07:55:10,883 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:10,883 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:10,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:55:11,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 07:55:11,086 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-19 07:55:11,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:11,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1073719666, now seen corresponding path program 1 times [2023-11-19 07:55:11,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:55:11,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [206491669] [2023-11-19 07:55:11,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:11,087 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 07:55:11,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:55:11,089 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 07:55:11,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 07:55:11,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:11,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:55:11,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:11,193 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:55:11,193 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:55:11,194 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:55:11,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [206491669] [2023-11-19 07:55:11,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [206491669] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:11,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:11,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:55:11,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103029549] [2023-11-19 07:55:11,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:11,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:55:11,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:55:11,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:55:11,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:55:11,196 INFO L87 Difference]: Start difference. First operand 64 states and 83 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:55:11,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:11,288 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2023-11-19 07:55:11,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:55:11,289 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2023-11-19 07:55:11,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:11,290 INFO L225 Difference]: With dead ends: 61 [2023-11-19 07:55:11,290 INFO L226 Difference]: Without dead ends: 61 [2023-11-19 07:55:11,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 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 07:55:11,291 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 13 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:11,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 97 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:55:11,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-11-19 07:55:11,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 56. [2023-11-19 07:55:11,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 41 states have (on average 1.4390243902439024) internal successors, (59), 49 states have internal predecessors, (59), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-19 07:55:11,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2023-11-19 07:55:11,297 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 20 [2023-11-19 07:55:11,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:11,298 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2023-11-19 07:55:11,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:55:11,298 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2023-11-19 07:55:11,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-19 07:55:11,299 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:11,299 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:11,307 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-11-19 07:55:11,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 07:55:11,502 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-19 07:55:11,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:11,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1074427268, now seen corresponding path program 1 times [2023-11-19 07:55:11,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:55:11,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2086448344] [2023-11-19 07:55:11,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:11,503 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 07:55:11,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:55:11,504 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 07:55:11,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 07:55:11,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:11,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:55:11,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:11,887 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:55:11,888 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:55:12,048 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:55:12,048 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:55:12,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2086448344] [2023-11-19 07:55:12,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2086448344] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:55:12,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:55:12,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 9 [2023-11-19 07:55:12,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463006650] [2023-11-19 07:55:12,049 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:55:12,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:55:12,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:55:12,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:55:12,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:55:12,051 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 07:55:12,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:12,361 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2023-11-19 07:55:12,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:55:12,362 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 21 [2023-11-19 07:55:12,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:12,363 INFO L225 Difference]: With dead ends: 59 [2023-11-19 07:55:12,363 INFO L226 Difference]: Without dead ends: 57 [2023-11-19 07:55:12,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:55:12,364 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 25 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:12,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 130 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:55:12,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-11-19 07:55:12,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2023-11-19 07:55:12,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 43 states have (on average 1.372093023255814) internal successors, (59), 49 states have internal predecessors, (59), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-19 07:55:12,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2023-11-19 07:55:12,384 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 21 [2023-11-19 07:55:12,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:12,385 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2023-11-19 07:55:12,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 07:55:12,386 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2023-11-19 07:55:12,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-19 07:55:12,387 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:12,387 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:12,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 07:55:12,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 07:55:12,588 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-19 07:55:12,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:12,588 INFO L85 PathProgramCache]: Analyzing trace with hash -807401739, now seen corresponding path program 1 times [2023-11-19 07:55:12,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:55:12,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [928833891] [2023-11-19 07:55:12,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:12,589 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 07:55:12,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:55:12,590 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 07:55:12,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 07:55:12,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:12,671 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:55:12,673 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:12,769 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:55:12,770 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:55:12,875 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:55:12,875 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:55:12,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [928833891] [2023-11-19 07:55:12,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [928833891] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:55:12,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:55:12,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-19 07:55:12,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631532779] [2023-11-19 07:55:12,876 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:55:12,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:55:12,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:55:12,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:55:12,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:55:12,878 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 07:55:13,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:13,066 INFO L93 Difference]: Finished difference Result 127 states and 151 transitions. [2023-11-19 07:55:13,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:55:13,067 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 22 [2023-11-19 07:55:13,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:13,068 INFO L225 Difference]: With dead ends: 127 [2023-11-19 07:55:13,068 INFO L226 Difference]: Without dead ends: 127 [2023-11-19 07:55:13,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:55:13,069 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 320 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:13,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 132 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:55:13,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-11-19 07:55:13,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 75. [2023-11-19 07:55:13,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 59 states have (on average 1.3389830508474576) internal successors, (79), 63 states have internal predecessors, (79), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (9), 9 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-19 07:55:13,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 93 transitions. [2023-11-19 07:55:13,077 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 93 transitions. Word has length 22 [2023-11-19 07:55:13,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:13,078 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 93 transitions. [2023-11-19 07:55:13,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 07:55:13,078 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 93 transitions. [2023-11-19 07:55:13,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-19 07:55:13,079 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:13,080 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:13,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 07:55:13,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 07:55:13,283 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-19 07:55:13,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:13,284 INFO L85 PathProgramCache]: Analyzing trace with hash -2128418719, now seen corresponding path program 1 times [2023-11-19 07:55:13,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:55:13,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [690720196] [2023-11-19 07:55:13,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:13,284 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 07:55:13,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:55:13,286 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 07:55:13,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 07:55:13,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:13,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 07:55:13,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:13,590 WARN L876 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_entry_point_~array~0#1.base| (_ BitVec 32))) (and (= (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~array~0#1.base| (_ bv0 1)) |c_#valid|) (= (select |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~array~0#1.base|) (_ bv0 1)))) is different from true [2023-11-19 07:55:13,600 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:55:13,601 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:55:13,730 INFO L349 Elim1Store]: treesize reduction 30, result has 21.1 percent of original size [2023-11-19 07:55:13,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 38 [2023-11-19 07:55:13,973 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:55:13,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [690720196] [2023-11-19 07:55:13,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [690720196] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:55:13,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [812272873] [2023-11-19 07:55:13,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:13,974 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 07:55:13,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu/cvc4 [2023-11-19 07:55:13,981 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 07:55:14,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2023-11-19 07:55:14,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:14,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 07:55:14,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:14,534 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:55:14,534 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:55:14,646 INFO L349 Elim1Store]: treesize reduction 30, result has 21.1 percent of original size [2023-11-19 07:55:14,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 38 [2023-11-19 07:55:14,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [812272873] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:55:14,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:55:14,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2023-11-19 07:55:14,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337789137] [2023-11-19 07:55:14,856 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:55:14,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:55:14,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:55:14,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:55:14,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=106, Unknown=1, NotChecked=20, Total=156 [2023-11-19 07:55:14,858 INFO L87 Difference]: Start difference. First operand 75 states and 93 transitions. Second operand has 12 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 07:55:15,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:15,341 INFO L93 Difference]: Finished difference Result 114 states and 144 transitions. [2023-11-19 07:55:15,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:55:15,343 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 24 [2023-11-19 07:55:15,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:15,346 INFO L225 Difference]: With dead ends: 114 [2023-11-19 07:55:15,346 INFO L226 Difference]: Without dead ends: 107 [2023-11-19 07:55:15,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 65 SyntacticMatches, 7 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=63, Invalid=246, Unknown=1, NotChecked=32, Total=342 [2023-11-19 07:55:15,347 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 79 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:15,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 156 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 132 Invalid, 0 Unknown, 68 Unchecked, 0.3s Time] [2023-11-19 07:55:15,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-11-19 07:55:15,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 96. [2023-11-19 07:55:15,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 77 states have (on average 1.3506493506493507) internal successors, (104), 81 states have internal predecessors, (104), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (15), 12 states have call predecessors, (15), 8 states have call successors, (15) [2023-11-19 07:55:15,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 127 transitions. [2023-11-19 07:55:15,356 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 127 transitions. Word has length 24 [2023-11-19 07:55:15,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:15,357 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 127 transitions. [2023-11-19 07:55:15,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 07:55:15,357 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 127 transitions. [2023-11-19 07:55:15,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 07:55:15,359 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:15,359 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:15,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2023-11-19 07:55:15,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 07:55:15,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 07:55:15,761 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-19 07:55:15,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:15,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1844216072, now seen corresponding path program 1 times [2023-11-19 07:55:15,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:55:15,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [896688678] [2023-11-19 07:55:15,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:15,762 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 07:55:15,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:55:15,763 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 07:55:15,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 07:55:15,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:15,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-19 07:55:15,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:15,895 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 07:55:15,902 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 07:55:16,138 WARN L876 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|))) is different from true [2023-11-19 07:55:16,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:55:16,175 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 07:55:16,191 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-19 07:55:16,191 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 07:55:16,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:55:16,414 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 07:55:16,430 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-19 07:55:16,431 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 07:55:16,503 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 4 not checked. [2023-11-19 07:55:16,503 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:55:20,946 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:55:20,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [896688678] [2023-11-19 07:55:20,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [896688678] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:55:20,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1758086301] [2023-11-19 07:55:20,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:20,947 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 07:55:20,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu/cvc4 [2023-11-19 07:55:20,948 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 07:55:20,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2023-11-19 07:55:21,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:21,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-19 07:55:21,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:21,145 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 07:55:21,155 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 07:55:21,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:55:21,324 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 07:55:21,341 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-19 07:55:21,341 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 07:55:21,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:55:21,494 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 07:55:21,516 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-19 07:55:21,516 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 07:55:21,547 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 4 not checked. [2023-11-19 07:55:21,548 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:55:23,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1758086301] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:55:23,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:55:23,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2023-11-19 07:55:23,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273850560] [2023-11-19 07:55:23,921 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:55:23,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:55:23,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:55:23,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:55:23,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=124, Unknown=3, NotChecked=22, Total=182 [2023-11-19 07:55:23,922 INFO L87 Difference]: Start difference. First operand 96 states and 127 transitions. Second operand has 12 states, 10 states have (on average 1.9) internal successors, (19), 11 states have internal predecessors, (19), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 07:55:24,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:24,777 INFO L93 Difference]: Finished difference Result 123 states and 154 transitions. [2023-11-19 07:55:24,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:55:24,778 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.9) internal successors, (19), 11 states have internal predecessors, (19), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 28 [2023-11-19 07:55:24,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:24,779 INFO L225 Difference]: With dead ends: 123 [2023-11-19 07:55:24,780 INFO L226 Difference]: Without dead ends: 122 [2023-11-19 07:55:24,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=71, Invalid=310, Unknown=3, NotChecked=36, Total=420 [2023-11-19 07:55:24,781 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 96 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:24,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 165 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 253 Invalid, 0 Unknown, 88 Unchecked, 0.6s Time] [2023-11-19 07:55:24,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-11-19 07:55:24,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 109. [2023-11-19 07:55:24,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 90 states have (on average 1.3666666666666667) internal successors, (123), 94 states have internal predecessors, (123), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (15), 12 states have call predecessors, (15), 8 states have call successors, (15) [2023-11-19 07:55:24,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 146 transitions. [2023-11-19 07:55:24,791 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 146 transitions. Word has length 28 [2023-11-19 07:55:24,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:24,791 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 146 transitions. [2023-11-19 07:55:24,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.9) internal successors, (19), 11 states have internal predecessors, (19), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 07:55:24,792 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 146 transitions. [2023-11-19 07:55:24,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-19 07:55:24,793 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:24,794 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:24,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 07:55:24,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2023-11-19 07:55:25,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu/cvc4 --incremental --print-success --lang smt [2023-11-19 07:55:25,197 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-19 07:55:25,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:25,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1022360221, now seen corresponding path program 1 times [2023-11-19 07:55:25,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:55:25,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [956691577] [2023-11-19 07:55:25,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:25,198 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 07:55:25,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:55:25,199 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 07:55:25,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 07:55:25,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:25,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 07:55:25,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:25,531 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:55:25,531 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:55:26,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2023-11-19 07:55:26,448 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:55:26,448 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:55:26,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [956691577] [2023-11-19 07:55:26,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [956691577] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:55:26,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:55:26,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-19 07:55:26,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425615470] [2023-11-19 07:55:26,449 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:55:26,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-19 07:55:26,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:55:26,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-19 07:55:26,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-11-19 07:55:26,451 INFO L87 Difference]: Start difference. First operand 109 states and 146 transitions. Second operand has 16 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 14 states have internal predecessors, (41), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-19 07:55:28,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:28,940 INFO L93 Difference]: Finished difference Result 171 states and 206 transitions. [2023-11-19 07:55:28,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-19 07:55:28,941 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 14 states have internal predecessors, (41), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 30 [2023-11-19 07:55:28,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:28,947 INFO L225 Difference]: With dead ends: 171 [2023-11-19 07:55:28,948 INFO L226 Difference]: Without dead ends: 171 [2023-11-19 07:55:28,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2023-11-19 07:55:28,954 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 106 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:28,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 246 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-19 07:55:28,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-11-19 07:55:28,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 106. [2023-11-19 07:55:28,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 87 states have (on average 1.3448275862068966) internal successors, (117), 91 states have internal predecessors, (117), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (15), 12 states have call predecessors, (15), 8 states have call successors, (15) [2023-11-19 07:55:28,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 140 transitions. [2023-11-19 07:55:28,979 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 140 transitions. Word has length 30 [2023-11-19 07:55:28,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:28,980 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 140 transitions. [2023-11-19 07:55:28,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 14 states have internal predecessors, (41), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-19 07:55:28,980 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 140 transitions. [2023-11-19 07:55:28,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-19 07:55:28,987 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:28,987 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:28,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 07:55:29,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 07:55:29,190 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-19 07:55:29,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:29,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1628395789, now seen corresponding path program 1 times [2023-11-19 07:55:29,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:55:29,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [645312459] [2023-11-19 07:55:29,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:29,191 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 07:55:29,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:55:29,192 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 07:55:29,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 07:55:29,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:29,274 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-19 07:55:29,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:29,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-19 07:55:29,689 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:55:29,690 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:55:29,967 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 07:55:29,967 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:55:29,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [645312459] [2023-11-19 07:55:29,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [645312459] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:55:29,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:55:29,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 16 [2023-11-19 07:55:29,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738919005] [2023-11-19 07:55:29,968 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:55:29,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-19 07:55:29,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:55:29,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-19 07:55:29,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:55:29,970 INFO L87 Difference]: Start difference. First operand 106 states and 140 transitions. Second operand has 17 states, 16 states have (on average 2.375) internal successors, (38), 14 states have internal predecessors, (38), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-19 07:55:33,019 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 07:55:35,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 07:55:35,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:35,964 INFO L93 Difference]: Finished difference Result 172 states and 200 transitions. [2023-11-19 07:55:35,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-19 07:55:35,965 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.375) internal successors, (38), 14 states have internal predecessors, (38), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 31 [2023-11-19 07:55:35,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:35,966 INFO L225 Difference]: With dead ends: 172 [2023-11-19 07:55:35,967 INFO L226 Difference]: Without dead ends: 172 [2023-11-19 07:55:35,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=239, Invalid=1321, Unknown=0, NotChecked=0, Total=1560 [2023-11-19 07:55:35,968 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 270 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 17 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:35,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 180 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 482 Invalid, 2 Unknown, 0 Unchecked, 5.0s Time] [2023-11-19 07:55:35,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-11-19 07:55:35,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 114. [2023-11-19 07:55:35,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 93 states have (on average 1.3333333333333333) internal successors, (124), 98 states have internal predecessors, (124), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (15), 12 states have call predecessors, (15), 8 states have call successors, (15) [2023-11-19 07:55:35,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 147 transitions. [2023-11-19 07:55:35,976 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 147 transitions. Word has length 31 [2023-11-19 07:55:35,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:35,976 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 147 transitions. [2023-11-19 07:55:35,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.375) internal successors, (38), 14 states have internal predecessors, (38), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-19 07:55:35,977 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 147 transitions. [2023-11-19 07:55:35,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-19 07:55:35,978 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:35,978 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:35,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 07:55:36,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 07:55:36,181 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-19 07:55:36,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:36,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1059338178, now seen corresponding path program 1 times [2023-11-19 07:55:36,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:55:36,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [642395780] [2023-11-19 07:55:36,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:36,183 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 07:55:36,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:55:36,184 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 07:55:36,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe14b5e-600b-4a03-86d5-c387c7ed879c/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 07:55:36,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:36,281 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 07:55:36,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:36,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 07:55:37,803 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 15 treesize of output 7 [2023-11-19 07:55:37,923 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:55:37,924 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:55:38,547 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 07:55:38,547 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:55:38,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [642395780] [2023-11-19 07:55:38,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [642395780] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:55:38,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:55:38,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 21 [2023-11-19 07:55:38,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947970850] [2023-11-19 07:55:38,548 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:55:38,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-19 07:55:38,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:55:38,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-19 07:55:38,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2023-11-19 07:55:38,550 INFO L87 Difference]: Start difference. First operand 114 states and 147 transitions. Second operand has 22 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 19 states have internal predecessors, (49), 5 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-19 07:55:40,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 07:55:43,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]