./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-1.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_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/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_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/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_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/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 501447f5c37550c3f5e8fdfcef22269dce5065ef789f4faf9fbe7fcfc263a044 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:56:48,092 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:56:48,187 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:56:48,194 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:56:48,198 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:56:48,240 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:56:48,243 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:56:48,244 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:56:48,245 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:56:48,248 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:56:48,250 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:56:48,250 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:56:48,251 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:56:48,256 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:56:48,256 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:56:48,257 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:56:48,257 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:56:48,258 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:56:48,258 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:56:48,259 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:56:48,259 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:56:48,260 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:56:48,260 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:56:48,261 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:56:48,261 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:56:48,261 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:56:48,262 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:56:48,262 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:56:48,263 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:56:48,263 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:56:48,263 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:56:48,264 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:56:48,264 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:56:48,283 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:56:48,283 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:56:48,283 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:56:48,284 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:56:48,284 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:56:48,284 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_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 501447f5c37550c3f5e8fdfcef22269dce5065ef789f4faf9fbe7fcfc263a044 [2023-11-19 07:56:48,548 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:56:48,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:56:48,575 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:56:48,576 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:56:48,577 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:56:48,579 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-1.i [2023-11-19 07:56:51,675 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:56:52,147 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:56:52,148 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-1.i [2023-11-19 07:56:52,180 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/bin/uautomizer-verify-uCwYo4JHxu/data/588f39544/262c3e0e64ff403e8c671b4a70bb2b52/FLAG9e32b7ce3 [2023-11-19 07:56:52,201 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/bin/uautomizer-verify-uCwYo4JHxu/data/588f39544/262c3e0e64ff403e8c671b4a70bb2b52 [2023-11-19 07:56:52,207 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:56:52,210 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:56:52,216 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:56:52,216 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:56:52,222 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:56:52,224 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:56:52" (1/1) ... [2023-11-19 07:56:52,226 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@243ae9a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:52, skipping insertion in model container [2023-11-19 07:56:52,226 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:56:52" (1/1) ... [2023-11-19 07:56:52,336 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:56:53,313 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:56:53,334 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 07:56:53,335 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@53d3472c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:53, skipping insertion in model container [2023-11-19 07:56:53,335 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:56:53,336 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 07:56:53,339 INFO L158 Benchmark]: Toolchain (without parser) took 1127.64ms. Allocated memory was 117.4MB in the beginning and 188.7MB in the end (delta: 71.3MB). Free memory was 72.1MB in the beginning and 154.8MB in the end (delta: -82.7MB). Peak memory consumption was 39.4MB. Max. memory is 16.1GB. [2023-11-19 07:56:53,339 INFO L158 Benchmark]: CDTParser took 0.45ms. Allocated memory is still 117.4MB. Free memory is still 86.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:56:53,341 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1120.14ms. Allocated memory was 117.4MB in the beginning and 188.7MB in the end (delta: 71.3MB). Free memory was 71.8MB in the beginning and 154.8MB in the end (delta: -83.0MB). Peak memory consumption was 39.4MB. Max. memory is 16.1GB. [2023-11-19 07:56:53,343 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45ms. Allocated memory is still 117.4MB. Free memory is still 86.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1120.14ms. Allocated memory was 117.4MB in the beginning and 188.7MB in the end (delta: 71.3MB). Free memory was 71.8MB in the beginning and 154.8MB in the end (delta: -83.0MB). Peak memory consumption was 39.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2221]: 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_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/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_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/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_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/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 501447f5c37550c3f5e8fdfcef22269dce5065ef789f4faf9fbe7fcfc263a044 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:56:55,917 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:56:56,045 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-19 07:56:56,054 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:56:56,055 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:56:56,113 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:56:56,114 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:56:56,114 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:56:56,116 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:56:56,121 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:56:56,121 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:56:56,122 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:56:56,122 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:56:56,124 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:56:56,125 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:56:56,125 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:56:56,125 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:56:56,126 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:56:56,126 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:56:56,127 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:56:56,128 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:56:56,128 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:56:56,129 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:56:56,129 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 07:56:56,130 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 07:56:56,130 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:56:56,131 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:56:56,131 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:56:56,132 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:56:56,132 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:56:56,134 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:56:56,134 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:56:56,135 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:56:56,135 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:56:56,136 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-19 07:56:56,136 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 07:56:56,136 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:56:56,136 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:56:56,137 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:56:56,138 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-19 07:56:56,138 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:56:56,138 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_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 501447f5c37550c3f5e8fdfcef22269dce5065ef789f4faf9fbe7fcfc263a044 [2023-11-19 07:56:56,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:56:56,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:56:56,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:56:56,545 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:56:56,546 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:56:56,547 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-1.i [2023-11-19 07:56:59,731 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:57:00,252 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:57:00,253 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-1.i [2023-11-19 07:57:00,285 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/bin/uautomizer-verify-uCwYo4JHxu/data/513b57035/e58a86be907f42f0a06ae3364976704a/FLAG1dc06b6ef [2023-11-19 07:57:00,303 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/bin/uautomizer-verify-uCwYo4JHxu/data/513b57035/e58a86be907f42f0a06ae3364976704a [2023-11-19 07:57:00,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:57:00,311 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:57:00,314 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:57:00,315 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:57:00,320 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:57:00,321 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:57:00" (1/1) ... [2023-11-19 07:57:00,322 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@528b5d9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:00, skipping insertion in model container [2023-11-19 07:57:00,323 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:57:00" (1/1) ... [2023-11-19 07:57:00,426 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:57:01,456 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:57:01,490 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 07:57:01,521 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:57:01,730 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:57:01,737 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:57:01,892 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:57:01,938 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:57:01,947 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:57:01,947 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:01 WrapperNode [2023-11-19 07:57:01,948 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:57:01,949 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:57:01,949 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:57:01,949 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:57:01,957 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:01" (1/1) ... [2023-11-19 07:57:02,036 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:01" (1/1) ... [2023-11-19 07:57:02,209 INFO L138 Inliner]: procedures = 180, calls = 732, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2873 [2023-11-19 07:57:02,210 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:57:02,211 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:57:02,211 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:57:02,211 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:57:02,220 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:01" (1/1) ... [2023-11-19 07:57:02,220 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:01" (1/1) ... [2023-11-19 07:57:02,234 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:01" (1/1) ... [2023-11-19 07:57:02,234 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:01" (1/1) ... [2023-11-19 07:57:02,313 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:01" (1/1) ... [2023-11-19 07:57:02,347 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:01" (1/1) ... [2023-11-19 07:57:02,365 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:01" (1/1) ... [2023-11-19 07:57:02,384 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:01" (1/1) ... [2023-11-19 07:57:02,404 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:57:02,406 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:57:02,406 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:57:02,406 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:57:02,408 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:01" (1/1) ... [2023-11-19 07:57:02,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:57:02,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:02,443 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:57:02,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:57:02,495 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-19 07:57:02,496 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-19 07:57:02,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-19 07:57:02,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 07:57:02,496 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 07:57:02,497 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 07:57:02,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 07:57:02,497 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 07:57:02,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:57:02,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:57:02,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 07:57:02,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:57:02,499 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-19 07:57:02,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:57:02,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:57:02,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 07:57:02,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 07:57:02,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:57:02,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:57:02,789 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:57:02,791 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:57:02,828 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-19 07:57:09,390 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:57:09,414 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:57:09,415 INFO L302 CfgBuilder]: Removed 54 assume(true) statements. [2023-11-19 07:57:09,427 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:57:09 BoogieIcfgContainer [2023-11-19 07:57:09,427 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:57:09,430 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:57:09,430 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:57:09,433 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:57:09,433 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:57:00" (1/3) ... [2023-11-19 07:57:09,434 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@369e9d7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:57:09, skipping insertion in model container [2023-11-19 07:57:09,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:01" (2/3) ... [2023-11-19 07:57:09,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@369e9d7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:57:09, skipping insertion in model container [2023-11-19 07:57:09,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:57:09" (3/3) ... [2023-11-19 07:57:09,437 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test9-1.i [2023-11-19 07:57:09,456 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:57:09,457 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 430 error locations. [2023-11-19 07:57:09,588 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:57:09,594 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;@144a114c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:57:09,594 INFO L358 AbstractCegarLoop]: Starting to check reachability of 430 error locations. [2023-11-19 07:57:09,605 INFO L276 IsEmpty]: Start isEmpty. Operand has 1881 states, 945 states have (on average 2.093121693121693) internal successors, (1978), 1874 states have internal predecessors, (1978), 505 states have call successors, (505), 3 states have call predecessors, (505), 3 states have return successors, (505), 6 states have call predecessors, (505), 505 states have call successors, (505) [2023-11-19 07:57:09,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 07:57:09,612 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:09,613 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 07:57:09,613 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 427 more)] === [2023-11-19 07:57:09,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:09,619 INFO L85 PathProgramCache]: Analyzing trace with hash 47731, now seen corresponding path program 1 times [2023-11-19 07:57:09,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:57:09,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [226304954] [2023-11-19 07:57:09,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:09,639 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:57:09,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:57:09,642 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:57:09,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-19 07:57:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:09,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:57:09,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:09,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-19 07:57:09,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:09,928 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:09,930 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:57:09,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [226304954] [2023-11-19 07:57:09,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [226304954] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:09,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:09,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:57:09,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584523085] [2023-11-19 07:57:09,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:09,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:09,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:57:09,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:09,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:09,989 INFO L87 Difference]: Start difference. First operand has 1881 states, 945 states have (on average 2.093121693121693) internal successors, (1978), 1874 states have internal predecessors, (1978), 505 states have call successors, (505), 3 states have call predecessors, (505), 3 states have return successors, (505), 6 states have call predecessors, (505), 505 states have call successors, (505) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:13,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:13,275 INFO L93 Difference]: Finished difference Result 1869 states and 2915 transitions. [2023-11-19 07:57:13,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:13,278 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-19 07:57:13,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:13,321 INFO L225 Difference]: With dead ends: 1869 [2023-11-19 07:57:13,321 INFO L226 Difference]: Without dead ends: 1867 [2023-11-19 07:57:13,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:13,327 INFO L413 NwaCegarLoop]: 2522 mSDtfsCounter, 1798 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2301 SdHoareTripleChecker+Valid, 2574 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:13,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2301 Valid, 2574 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-19 07:57:13,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1867 states. [2023-11-19 07:57:13,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1867 to 1866. [2023-11-19 07:57:13,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1866 states, 947 states have (on average 2.0116156282998943) internal successors, (1905), 1859 states have internal predecessors, (1905), 505 states have call successors, (505), 3 states have call predecessors, (505), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2023-11-19 07:57:13,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1866 states to 1866 states and 2913 transitions. [2023-11-19 07:57:13,984 INFO L78 Accepts]: Start accepts. Automaton has 1866 states and 2913 transitions. Word has length 3 [2023-11-19 07:57:13,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:13,984 INFO L495 AbstractCegarLoop]: Abstraction has 1866 states and 2913 transitions. [2023-11-19 07:57:13,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:13,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1866 states and 2913 transitions. [2023-11-19 07:57:13,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 07:57:13,985 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:13,985 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 07:57:14,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:14,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:57:14,198 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 427 more)] === [2023-11-19 07:57:14,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:14,199 INFO L85 PathProgramCache]: Analyzing trace with hash 47732, now seen corresponding path program 1 times [2023-11-19 07:57:14,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:57:14,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1048929042] [2023-11-19 07:57:14,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:14,201 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:57:14,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:57:14,202 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:57:14,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-19 07:57:14,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:14,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:57:14,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:14,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-19 07:57:14,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:14,358 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:14,358 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:57:14,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1048929042] [2023-11-19 07:57:14,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1048929042] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:14,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:14,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:57:14,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315393862] [2023-11-19 07:57:14,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:14,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:14,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:57:14,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:14,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:14,367 INFO L87 Difference]: Start difference. First operand 1866 states and 2913 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:18,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:18,463 INFO L93 Difference]: Finished difference Result 3077 states and 5146 transitions. [2023-11-19 07:57:18,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:18,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-19 07:57:18,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:18,490 INFO L225 Difference]: With dead ends: 3077 [2023-11-19 07:57:18,490 INFO L226 Difference]: Without dead ends: 3077 [2023-11-19 07:57:18,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:18,492 INFO L413 NwaCegarLoop]: 2935 mSDtfsCounter, 1232 mSDsluCounter, 1975 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1732 SdHoareTripleChecker+Valid, 4910 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:18,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1732 Valid, 4910 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1019 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-19 07:57:18,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3077 states. [2023-11-19 07:57:18,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3077 to 2991. [2023-11-19 07:57:18,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2991 states, 1573 states have (on average 1.9936427209154481) internal successors, (3136), 2984 states have internal predecessors, (3136), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2023-11-19 07:57:18,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2991 states to 2991 states and 5144 transitions. [2023-11-19 07:57:18,933 INFO L78 Accepts]: Start accepts. Automaton has 2991 states and 5144 transitions. Word has length 3 [2023-11-19 07:57:18,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:18,933 INFO L495 AbstractCegarLoop]: Abstraction has 2991 states and 5144 transitions. [2023-11-19 07:57:18,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:18,933 INFO L276 IsEmpty]: Start isEmpty. Operand 2991 states and 5144 transitions. [2023-11-19 07:57:18,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 07:57:18,934 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:18,934 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:18,942 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/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 07:57:19,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:57:19,137 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 427 more)] === [2023-11-19 07:57:19,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:19,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1130822653, now seen corresponding path program 1 times [2023-11-19 07:57:19,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:57:19,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [657160331] [2023-11-19 07:57:19,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:19,139 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:57:19,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:57:19,141 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:57:19,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-19 07:57:19,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:19,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:57:19,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:19,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-19 07:57:19,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-19 07:57:19,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:57:19,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-19 07:57:19,430 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-19 07:57:19,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-19 07:57:19,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:19,454 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:19,454 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:57:19,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [657160331] [2023-11-19 07:57:19,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [657160331] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:19,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:19,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:57:19,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206429966] [2023-11-19 07:57:19,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:19,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:57:19,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:57:19,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:57:19,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:57:19,457 INFO L87 Difference]: Start difference. First operand 2991 states and 5144 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:24,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:24,918 INFO L93 Difference]: Finished difference Result 2981 states and 5133 transitions. [2023-11-19 07:57:24,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:57:24,919 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-19 07:57:24,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:24,946 INFO L225 Difference]: With dead ends: 2981 [2023-11-19 07:57:24,947 INFO L226 Difference]: Without dead ends: 2981 [2023-11-19 07:57:24,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:57:24,948 INFO L413 NwaCegarLoop]: 2299 mSDtfsCounter, 3655 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 1167 mSolverCounterSat, 523 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4158 SdHoareTripleChecker+Valid, 2330 SdHoareTripleChecker+Invalid, 1690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 523 IncrementalHoareTripleChecker+Valid, 1167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:24,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4158 Valid, 2330 Invalid, 1690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [523 Valid, 1167 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-11-19 07:57:24,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2023-11-19 07:57:25,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 1855. [2023-11-19 07:57:25,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1855 states, 947 states have (on average 1.9989440337909188) internal successors, (1893), 1848 states have internal predecessors, (1893), 505 states have call successors, (505), 3 states have call predecessors, (505), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2023-11-19 07:57:25,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1855 states to 1855 states and 2901 transitions. [2023-11-19 07:57:25,246 INFO L78 Accepts]: Start accepts. Automaton has 1855 states and 2901 transitions. Word has length 7 [2023-11-19 07:57:25,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:25,247 INFO L495 AbstractCegarLoop]: Abstraction has 1855 states and 2901 transitions. [2023-11-19 07:57:25,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:25,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1855 states and 2901 transitions. [2023-11-19 07:57:25,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 07:57:25,250 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:25,250 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:25,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-19 07:57:25,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:57:25,453 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 427 more)] === [2023-11-19 07:57:25,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:25,454 INFO L85 PathProgramCache]: Analyzing trace with hash 695763858, now seen corresponding path program 1 times [2023-11-19 07:57:25,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:57:25,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1672084969] [2023-11-19 07:57:25,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:25,455 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:57:25,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:57:25,456 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:57:25,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-19 07:57:25,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:25,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:57:25,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:25,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-19 07:57:25,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:25,627 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:25,628 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:57:25,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1672084969] [2023-11-19 07:57:25,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1672084969] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:25,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:25,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:57:25,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390553538] [2023-11-19 07:57:25,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:25,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:25,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:57:25,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:25,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:25,632 INFO L87 Difference]: Start difference. First operand 1855 states and 2901 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:28,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:28,794 INFO L93 Difference]: Finished difference Result 3023 states and 5091 transitions. [2023-11-19 07:57:28,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:28,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-19 07:57:28,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:28,819 INFO L225 Difference]: With dead ends: 3023 [2023-11-19 07:57:28,820 INFO L226 Difference]: Without dead ends: 3023 [2023-11-19 07:57:28,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:28,821 INFO L413 NwaCegarLoop]: 4560 mSDtfsCounter, 1808 mSDsluCounter, 2164 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2311 SdHoareTripleChecker+Valid, 6724 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:28,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2311 Valid, 6724 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-19 07:57:28,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3023 states. [2023-11-19 07:57:29,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3023 to 1808. [2023-11-19 07:57:29,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1808 states, 947 states have (on average 1.9493136219640972) internal successors, (1846), 1801 states have internal predecessors, (1846), 505 states have call successors, (505), 3 states have call predecessors, (505), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2023-11-19 07:57:29,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1808 states to 1808 states and 2854 transitions. [2023-11-19 07:57:29,136 INFO L78 Accepts]: Start accepts. Automaton has 1808 states and 2854 transitions. Word has length 8 [2023-11-19 07:57:29,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:29,137 INFO L495 AbstractCegarLoop]: Abstraction has 1808 states and 2854 transitions. [2023-11-19 07:57:29,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:29,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1808 states and 2854 transitions. [2023-11-19 07:57:29,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 07:57:29,138 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:29,138 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:29,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:29,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:57:29,341 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 427 more)] === [2023-11-19 07:57:29,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:29,342 INFO L85 PathProgramCache]: Analyzing trace with hash 695763859, now seen corresponding path program 1 times [2023-11-19 07:57:29,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:57:29,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1485057860] [2023-11-19 07:57:29,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:29,343 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:57:29,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:57:29,344 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:57:29,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-19 07:57:29,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:29,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:57:29,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:29,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-19 07:57:29,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:29,507 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:29,508 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:57:29,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1485057860] [2023-11-19 07:57:29,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1485057860] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:29,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:29,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:57:29,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908429088] [2023-11-19 07:57:29,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:29,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:29,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:57:29,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:29,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:29,510 INFO L87 Difference]: Start difference. First operand 1808 states and 2854 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:33,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:33,336 INFO L93 Difference]: Finished difference Result 3093 states and 5163 transitions. [2023-11-19 07:57:33,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:33,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-19 07:57:33,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:33,360 INFO L225 Difference]: With dead ends: 3093 [2023-11-19 07:57:33,360 INFO L226 Difference]: Without dead ends: 3093 [2023-11-19 07:57:33,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:33,361 INFO L413 NwaCegarLoop]: 4754 mSDtfsCounter, 1497 mSDsluCounter, 2326 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1997 SdHoareTripleChecker+Valid, 7080 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:33,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1997 Valid, 7080 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1039 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-19 07:57:33,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3093 states. [2023-11-19 07:57:33,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3093 to 1830. [2023-11-19 07:57:33,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1830 states, 979 states have (on average 1.9427987742594484) internal successors, (1902), 1823 states have internal predecessors, (1902), 505 states have call successors, (505), 3 states have call predecessors, (505), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2023-11-19 07:57:33,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1830 states to 1830 states and 2910 transitions. [2023-11-19 07:57:33,751 INFO L78 Accepts]: Start accepts. Automaton has 1830 states and 2910 transitions. Word has length 8 [2023-11-19 07:57:33,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:33,752 INFO L495 AbstractCegarLoop]: Abstraction has 1830 states and 2910 transitions. [2023-11-19 07:57:33,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:33,752 INFO L276 IsEmpty]: Start isEmpty. Operand 1830 states and 2910 transitions. [2023-11-19 07:57:33,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 07:57:33,753 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:33,753 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:33,756 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/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)] Ended with exit code 0 [2023-11-19 07:57:33,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:57:33,956 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr428ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 427 more)] === [2023-11-19 07:57:33,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:33,956 INFO L85 PathProgramCache]: Analyzing trace with hash -578253375, now seen corresponding path program 1 times [2023-11-19 07:57:33,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:57:33,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [85749122] [2023-11-19 07:57:33,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:33,957 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:57:33,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:57:33,958 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:57:33,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-19 07:57:34,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:34,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:57:34,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:34,146 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:57:34,147 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:57:34,148 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:57:34,154 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 30 treesize of output 39 [2023-11-19 07:57:34,227 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:57:34,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2023-11-19 07:57:34,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:34,248 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:34,248 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:57:34,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [85749122] [2023-11-19 07:57:34,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [85749122] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:34,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:34,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:57:34,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595302508] [2023-11-19 07:57:34,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:34,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:57:34,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:57:34,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:57:34,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:57:34,252 INFO L87 Difference]: Start difference. First operand 1830 states and 2910 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:37,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:37,867 INFO L93 Difference]: Finished difference Result 3043 states and 5144 transitions. [2023-11-19 07:57:37,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:57:37,868 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-19 07:57:37,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:37,887 INFO L225 Difference]: With dead ends: 3043 [2023-11-19 07:57:37,888 INFO L226 Difference]: Without dead ends: 3043 [2023-11-19 07:57:37,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:57:37,889 INFO L413 NwaCegarLoop]: 2850 mSDtfsCounter, 1230 mSDsluCounter, 5044 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1730 SdHoareTripleChecker+Valid, 7894 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:37,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1730 Valid, 7894 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-19 07:57:37,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3043 states. [2023-11-19 07:57:38,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3043 to 1832. [2023-11-19 07:57:38,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1832 states, 981 states have (on average 1.9408766564729867) internal successors, (1904), 1825 states have internal predecessors, (1904), 505 states have call successors, (505), 3 states have call predecessors, (505), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2023-11-19 07:57:38,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1832 states to 1832 states and 2912 transitions. [2023-11-19 07:57:38,236 INFO L78 Accepts]: Start accepts. Automaton has 1832 states and 2912 transitions. Word has length 10 [2023-11-19 07:57:38,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:38,236 INFO L495 AbstractCegarLoop]: Abstraction has 1832 states and 2912 transitions. [2023-11-19 07:57:38,237 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:38,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1832 states and 2912 transitions. [2023-11-19 07:57:38,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-19 07:57:38,238 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:38,238 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:38,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:38,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:57:38,443 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 427 more)] === [2023-11-19 07:57:38,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:38,443 INFO L85 PathProgramCache]: Analyzing trace with hash -168464001, now seen corresponding path program 1 times [2023-11-19 07:57:38,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:57:38,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [169922542] [2023-11-19 07:57:38,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:38,444 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:57:38,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:57:38,445 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:57:38,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae003450-fdf5-4df8-b8f1-d6b3308fda7c/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-19 07:57:38,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:38,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:57:38,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:38,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:38,643 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:38,643 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:57:38,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [169922542] [2023-11-19 07:57:38,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [169922542] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:38,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:38,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:57:38,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593442759] [2023-11-19 07:57:38,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:38,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:38,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:57:38,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:38,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:38,648 INFO L87 Difference]: Start difference. First operand 1832 states and 2912 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)