./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae31ce-e46b-492f-8c43-0607c1db4747/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae31ce-e46b-492f-8c43-0607c1db4747/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_43ae31ce-e46b-492f-8c43-0607c1db4747/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae31ce-e46b-492f-8c43-0607c1db4747/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae31ce-e46b-492f-8c43-0607c1db4747/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae31ce-e46b-492f-8c43-0607c1db4747/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-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0c81340d9d0e66dca5ab126c254e84ac0eff8aac681c837312fa0969b8f7f2ee --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:01:38,871 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:01:38,951 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae31ce-e46b-492f-8c43-0607c1db4747/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2023-11-19 08:01:38,958 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:01:38,959 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:01:39,002 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:01:39,004 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:01:39,005 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:01:39,006 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:01:39,012 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:01:39,014 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:01:39,014 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:01:39,015 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:01:39,018 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:01:39,018 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:01:39,019 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:01:39,019 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:01:39,020 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:01:39,021 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:01:39,021 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:01:39,022 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 08:01:39,023 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 08:01:39,023 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:01:39,024 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:01:39,024 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 08:01:39,025 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:01:39,026 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:01:39,026 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:01:39,027 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:01:39,027 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:01:39,029 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:01:39,030 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:01:39,030 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:01:39,030 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:01:39,031 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:01:39,031 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:01:39,032 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:01:39,032 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:01:39,032 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:01:39,033 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:01:39,033 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:01:39,034 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_43ae31ce-e46b-492f-8c43-0607c1db4747/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae31ce-e46b-492f-8c43-0607c1db4747/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c81340d9d0e66dca5ab126c254e84ac0eff8aac681c837312fa0969b8f7f2ee [2023-11-19 08:01:39,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:01:39,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:01:39,401 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:01:39,402 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:01:39,403 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:01:39,404 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae31ce-e46b-492f-8c43-0607c1db4747/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-3.i [2023-11-19 08:01:42,440 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:01:42,817 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:01:42,818 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae31ce-e46b-492f-8c43-0607c1db4747/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-3.i [2023-11-19 08:01:42,848 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae31ce-e46b-492f-8c43-0607c1db4747/bin/uautomizer-verify-uCwYo4JHxu/data/5a5cbf942/95971f0824eb40d6bdd176582c25cbca/FLAGb13188c51 [2023-11-19 08:01:42,871 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae31ce-e46b-492f-8c43-0607c1db4747/bin/uautomizer-verify-uCwYo4JHxu/data/5a5cbf942/95971f0824eb40d6bdd176582c25cbca [2023-11-19 08:01:42,875 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:01:42,876 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:01:42,877 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:01:42,877 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:01:42,885 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:01:42,889 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:01:42" (1/1) ... [2023-11-19 08:01:42,891 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2800289e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:42, skipping insertion in model container [2023-11-19 08:01:42,891 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:01:42" (1/1) ... [2023-11-19 08:01:42,986 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:01:43,328 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 08:01:43,694 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:01:43,725 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 08:01:43,726 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5fd36eaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:43, skipping insertion in model container [2023-11-19 08:01:43,726 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:01:43,727 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 08:01:43,729 INFO L158 Benchmark]: Toolchain (without parser) took 851.70ms. Allocated memory is still 184.5MB. Free memory was 137.5MB in the beginning and 115.8MB in the end (delta: 21.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-19 08:01:43,731 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 138.4MB. Free memory is still 82.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:01:43,732 INFO L158 Benchmark]: CACSL2BoogieTranslator took 849.27ms. Allocated memory is still 184.5MB. Free memory was 137.5MB in the beginning and 115.8MB in the end (delta: 21.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-19 08:01:43,734 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 138.4MB. Free memory is still 82.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 849.27ms. Allocated memory is still 184.5MB. Free memory was 137.5MB in the beginning and 115.8MB in the end (delta: 21.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 740]: 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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae31ce-e46b-492f-8c43-0607c1db4747/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae31ce-e46b-492f-8c43-0607c1db4747/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_43ae31ce-e46b-492f-8c43-0607c1db4747/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae31ce-e46b-492f-8c43-0607c1db4747/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae31ce-e46b-492f-8c43-0607c1db4747/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae31ce-e46b-492f-8c43-0607c1db4747/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-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0c81340d9d0e66dca5ab126c254e84ac0eff8aac681c837312fa0969b8f7f2ee --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:01:46,388 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:01:46,529 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae31ce-e46b-492f-8c43-0607c1db4747/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf [2023-11-19 08:01:46,538 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:01:46,542 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:01:46,586 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:01:46,587 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:01:46,588 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:01:46,589 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:01:46,596 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:01:46,597 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:01:46,597 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:01:46,598 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:01:46,600 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:01:46,600 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:01:46,601 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:01:46,601 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:01:46,602 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:01:46,602 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:01:46,603 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:01:46,604 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 08:01:46,604 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 08:01:46,605 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:01:46,605 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:01:46,605 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 08:01:46,606 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 08:01:46,606 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 08:01:46,606 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:01:46,607 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:01:46,607 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:01:46,608 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:01:46,609 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:01:46,609 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:01:46,609 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:01:46,610 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:01:46,610 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:01:46,610 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:01:46,610 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-19 08:01:46,611 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 08:01:46,612 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:01:46,612 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:01:46,612 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:01:46,612 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-19 08:01:46,613 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:01:46,613 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_43ae31ce-e46b-492f-8c43-0607c1db4747/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae31ce-e46b-492f-8c43-0607c1db4747/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c81340d9d0e66dca5ab126c254e84ac0eff8aac681c837312fa0969b8f7f2ee [2023-11-19 08:01:47,056 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:01:47,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:01:47,086 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:01:47,088 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:01:47,089 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:01:47,090 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae31ce-e46b-492f-8c43-0607c1db4747/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-3.i [2023-11-19 08:01:50,330 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:01:50,853 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:01:50,854 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae31ce-e46b-492f-8c43-0607c1db4747/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-3.i [2023-11-19 08:01:50,883 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae31ce-e46b-492f-8c43-0607c1db4747/bin/uautomizer-verify-uCwYo4JHxu/data/125b981a4/b352950e60ee4218a80bb15354ce4b0f/FLAG1106465ec [2023-11-19 08:01:50,908 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae31ce-e46b-492f-8c43-0607c1db4747/bin/uautomizer-verify-uCwYo4JHxu/data/125b981a4/b352950e60ee4218a80bb15354ce4b0f [2023-11-19 08:01:50,916 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:01:50,919 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:01:50,921 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:01:50,921 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:01:50,932 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:01:50,932 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:01:50" (1/1) ... [2023-11-19 08:01:50,934 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fe3f43c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:50, skipping insertion in model container [2023-11-19 08:01:50,934 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:01:50" (1/1) ... [2023-11-19 08:01:51,051 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:01:51,513 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 08:01:52,140 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:01:52,157 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 08:01:52,176 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:01:52,197 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 08:01:52,372 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:01:52,377 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:01:52,397 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 08:01:52,466 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:01:52,513 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:01:52,521 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:01:52,521 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:52 WrapperNode [2023-11-19 08:01:52,522 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:01:52,523 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:01:52,523 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:01:52,523 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:01:52,531 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:52" (1/1) ... [2023-11-19 08:01:52,585 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:52" (1/1) ... [2023-11-19 08:01:52,701 INFO L138 Inliner]: procedures = 181, calls = 440, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1422 [2023-11-19 08:01:52,702 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:01:52,704 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:01:52,704 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:01:52,705 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:01:52,716 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:52" (1/1) ... [2023-11-19 08:01:52,716 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:52" (1/1) ... [2023-11-19 08:01:52,735 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:52" (1/1) ... [2023-11-19 08:01:52,735 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:52" (1/1) ... [2023-11-19 08:01:52,820 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:52" (1/1) ... [2023-11-19 08:01:52,837 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:52" (1/1) ... [2023-11-19 08:01:52,845 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:52" (1/1) ... [2023-11-19 08:01:52,855 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:52" (1/1) ... [2023-11-19 08:01:52,870 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:01:52,871 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:01:52,871 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:01:52,871 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:01:52,872 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:52" (1/1) ... [2023-11-19 08:01:52,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:01:52,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae31ce-e46b-492f-8c43-0607c1db4747/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:52,914 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae31ce-e46b-492f-8c43-0607c1db4747/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:52,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae31ce-e46b-492f-8c43-0607c1db4747/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:01:52,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-19 08:01:52,967 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 08:01:52,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 08:01:52,969 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 08:01:52,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 08:01:52,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:01:52,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:01:52,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 08:01:52,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 08:01:52,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:01:52,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 08:01:52,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 08:01:52,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:01:52,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:01:53,308 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:01:53,312 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:02:09,643 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:02:09,662 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:02:09,663 INFO L302 CfgBuilder]: Removed 77 assume(true) statements. [2023-11-19 08:02:09,677 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:02:09 BoogieIcfgContainer [2023-11-19 08:02:09,679 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:02:09,682 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:02:09,682 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:02:09,686 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:02:09,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:01:50" (1/3) ... [2023-11-19 08:02:09,688 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51463124 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:02:09, skipping insertion in model container [2023-11-19 08:02:09,688 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:52" (2/3) ... [2023-11-19 08:02:09,690 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51463124 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:02:09, skipping insertion in model container [2023-11-19 08:02:09,690 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:02:09" (3/3) ... [2023-11-19 08:02:09,692 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_nondet_test4-3.i [2023-11-19 08:02:09,715 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:02:09,715 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 08:02:09,797 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:02:09,805 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;@349ba837, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:02:09,806 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 08:02:09,813 INFO L276 IsEmpty]: Start isEmpty. Operand has 251 states, 241 states have (on average 1.6556016597510372) internal successors, (399), 243 states have internal predecessors, (399), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 08:02:09,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 08:02:09,820 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:09,822 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 08:02:09,822 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 08:02:09,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:09,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1172867, now seen corresponding path program 1 times [2023-11-19 08:02:09,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:02:09,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [215382693] [2023-11-19 08:02:09,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:09,847 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 08:02:09,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae31ce-e46b-492f-8c43-0607c1db4747/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:02:09,850 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae31ce-e46b-492f-8c43-0607c1db4747/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 08:02:09,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae31ce-e46b-492f-8c43-0607c1db4747/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 08:02:10,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:10,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 08:02:10,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:10,146 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 08:02:10,146 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:02:10,147 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:02:10,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [215382693] [2023-11-19 08:02:10,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [215382693] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:10,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:10,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:02:10,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039612176] [2023-11-19 08:02:10,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:10,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:02:10,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:02:10,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:02:10,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:02:10,209 INFO L87 Difference]: Start difference. First operand has 251 states, 241 states have (on average 1.6556016597510372) internal successors, (399), 243 states have internal predecessors, (399), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 08:02:12,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 08:02:14,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 08:02:16,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 08:02:16,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:16,141 INFO L93 Difference]: Finished difference Result 314 states and 409 transitions. [2023-11-19 08:02:16,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:02:16,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2023-11-19 08:02:16,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:16,165 INFO L225 Difference]: With dead ends: 314 [2023-11-19 08:02:16,166 INFO L226 Difference]: Without dead ends: 310 [2023-11-19 08:02:16,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 08:02:16,175 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 83 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-11-19 08:02:16,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 656 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 2 Unknown, 0 Unchecked, 5.8s Time] [2023-11-19 08:02:16,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2023-11-19 08:02:16,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 260. [2023-11-19 08:02:16,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 251 states have (on average 1.298804780876494) internal successors, (326), 252 states have internal predecessors, (326), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 08:02:16,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 338 transitions. [2023-11-19 08:02:16,288 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 338 transitions. Word has length 4 [2023-11-19 08:02:16,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:16,289 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 338 transitions. [2023-11-19 08:02:16,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 08:02:16,289 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 338 transitions. [2023-11-19 08:02:16,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 08:02:16,291 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:16,291 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:16,295 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae31ce-e46b-492f-8c43-0607c1db4747/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-11-19 08:02:16,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae31ce-e46b-492f-8c43-0607c1db4747/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 08:02:16,494 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 08:02:16,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:16,494 INFO L85 PathProgramCache]: Analyzing trace with hash 310602656, now seen corresponding path program 1 times [2023-11-19 08:02:16,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:02:16,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [414801366] [2023-11-19 08:02:16,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:16,495 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 08:02:16,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae31ce-e46b-492f-8c43-0607c1db4747/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:02:16,497 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae31ce-e46b-492f-8c43-0607c1db4747/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 08:02:16,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae31ce-e46b-492f-8c43-0607c1db4747/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 08:02:16,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:16,684 INFO L262 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 08:02:16,688 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:16,789 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 08:02:16,789 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:02:16,792 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:02:16,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [414801366] [2023-11-19 08:02:16,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [414801366] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:16,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:16,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:02:16,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605558791] [2023-11-19 08:02:16,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:16,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:02:16,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:02:16,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:02:16,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:02:16,797 INFO L87 Difference]: Start difference. First operand 260 states and 338 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:19,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 08:02:21,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 08:02:23,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 08:02:27,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 08:02:27,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:27,999 INFO L93 Difference]: Finished difference Result 433 states and 563 transitions. [2023-11-19 08:02:28,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:02:28,004 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-19 08:02:28,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:28,008 INFO L225 Difference]: With dead ends: 433 [2023-11-19 08:02:28,008 INFO L226 Difference]: Without dead ends: 433 [2023-11-19 08:02:28,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:02:28,010 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 245 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 5 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:02:28,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 873 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 73 Invalid, 3 Unknown, 0 Unchecked, 11.1s Time] [2023-11-19 08:02:28,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2023-11-19 08:02:28,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 379. [2023-11-19 08:02:28,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 367 states have (on average 1.2915531335149864) internal successors, (474), 368 states have internal predecessors, (474), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 08:02:28,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 492 transitions. [2023-11-19 08:02:28,035 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 492 transitions. Word has length 11 [2023-11-19 08:02:28,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:28,035 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 492 transitions. [2023-11-19 08:02:28,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:28,036 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 492 transitions. [2023-11-19 08:02:28,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 08:02:28,037 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:28,037 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:28,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae31ce-e46b-492f-8c43-0607c1db4747/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:28,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae31ce-e46b-492f-8c43-0607c1db4747/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 08:02:28,240 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 08:02:28,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:28,241 INFO L85 PathProgramCache]: Analyzing trace with hash -401982605, now seen corresponding path program 1 times [2023-11-19 08:02:28,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:02:28,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1749524273] [2023-11-19 08:02:28,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:28,242 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 08:02:28,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae31ce-e46b-492f-8c43-0607c1db4747/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:02:28,244 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae31ce-e46b-492f-8c43-0607c1db4747/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 08:02:28,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae31ce-e46b-492f-8c43-0607c1db4747/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 08:02:28,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:28,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:02:28,448 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:28,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:02:28,529 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:02:28,529 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:02:28,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1749524273] [2023-11-19 08:02:28,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1749524273] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:28,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:28,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:02:28,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868461573] [2023-11-19 08:02:28,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:28,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:02:28,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:02:28,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:02:28,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:02:28,532 INFO L87 Difference]: Start difference. First operand 379 states and 492 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:29,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:29,559 INFO L93 Difference]: Finished difference Result 431 states and 559 transitions. [2023-11-19 08:02:29,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:02:29,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-11-19 08:02:29,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:29,568 INFO L225 Difference]: With dead ends: 431 [2023-11-19 08:02:29,568 INFO L226 Difference]: Without dead ends: 431 [2023-11-19 08:02:29,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 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 08:02:29,569 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 128 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:02:29,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 600 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-19 08:02:29,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2023-11-19 08:02:29,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 377. [2023-11-19 08:02:29,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 365 states have (on average 1.2876712328767124) internal successors, (470), 366 states have internal predecessors, (470), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 08:02:29,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 488 transitions. [2023-11-19 08:02:29,593 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 488 transitions. Word has length 27 [2023-11-19 08:02:29,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:29,593 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 488 transitions. [2023-11-19 08:02:29,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:29,594 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 488 transitions. [2023-11-19 08:02:29,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 08:02:29,606 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:29,607 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:29,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae31ce-e46b-492f-8c43-0607c1db4747/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:29,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae31ce-e46b-492f-8c43-0607c1db4747/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 08:02:29,810 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 08:02:29,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:29,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1219631055, now seen corresponding path program 1 times [2023-11-19 08:02:29,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:02:29,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1262246220] [2023-11-19 08:02:29,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:29,811 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 08:02:29,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae31ce-e46b-492f-8c43-0607c1db4747/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:02:29,812 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae31ce-e46b-492f-8c43-0607c1db4747/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 08:02:29,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae31ce-e46b-492f-8c43-0607c1db4747/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 08:02:30,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:30,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 08:02:30,039 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:30,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:30,165 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:02:30,166 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:02:30,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1262246220] [2023-11-19 08:02:30,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1262246220] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:30,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:30,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:02:30,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150724558] [2023-11-19 08:02:30,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:30,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:02:30,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:02:30,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:02:30,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:02:30,168 INFO L87 Difference]: Start difference. First operand 377 states and 488 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:32,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 08:02:35,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 08:02:39,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:39,256 INFO L93 Difference]: Finished difference Result 431 states and 558 transitions. [2023-11-19 08:02:39,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:02:39,260 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-11-19 08:02:39,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:39,263 INFO L225 Difference]: With dead ends: 431 [2023-11-19 08:02:39,263 INFO L226 Difference]: Without dead ends: 425 [2023-11-19 08:02:39,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 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 08:02:39,265 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 132 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:02:39,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 904 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 103 Invalid, 2 Unknown, 0 Unchecked, 9.0s Time] [2023-11-19 08:02:39,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2023-11-19 08:02:39,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 371. [2023-11-19 08:02:39,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 359 states have (on average 1.2896935933147633) internal successors, (463), 360 states have internal predecessors, (463), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 08:02:39,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 481 transitions. [2023-11-19 08:02:39,285 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 481 transitions. Word has length 27 [2023-11-19 08:02:39,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:39,285 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 481 transitions. [2023-11-19 08:02:39,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:39,286 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 481 transitions. [2023-11-19 08:02:39,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-19 08:02:39,294 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:39,294 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:39,302 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae31ce-e46b-492f-8c43-0607c1db4747/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-11-19 08:02:39,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae31ce-e46b-492f-8c43-0607c1db4747/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 08:02:39,497 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 08:02:39,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:39,498 INFO L85 PathProgramCache]: Analyzing trace with hash -157580521, now seen corresponding path program 1 times [2023-11-19 08:02:39,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:02:39,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1387532969] [2023-11-19 08:02:39,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:39,501 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 08:02:39,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae31ce-e46b-492f-8c43-0607c1db4747/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:02:39,502 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae31ce-e46b-492f-8c43-0607c1db4747/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 08:02:39,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae31ce-e46b-492f-8c43-0607c1db4747/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 08:02:40,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:40,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 771 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:02:40,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:40,484 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 08:02:40,488 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:02:40,488 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:02:40,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1387532969] [2023-11-19 08:02:40,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1387532969] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:40,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:40,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:02:40,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906104020] [2023-11-19 08:02:40,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:40,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:02:40,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:02:40,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:02:40,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:02:40,497 INFO L87 Difference]: Start difference. First operand 371 states and 481 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4)