./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc 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_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme --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 1ccd4b93de7420a1f7847638daedeeee3b82eb082e434a23182d7e5e0aee2085 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:42:33,775 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:42:33,906 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-26 10:42:33,915 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:42:33,916 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:42:33,957 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:42:33,958 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:42:33,958 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:42:33,959 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:42:33,964 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:42:33,965 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:42:33,966 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:42:33,967 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:42:33,969 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:42:33,969 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:42:33,969 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:42:33,970 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:42:33,970 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:42:33,971 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:42:33,971 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:42:33,972 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 10:42:33,972 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 10:42:33,973 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 10:42:33,973 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:42:33,973 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 10:42:33,974 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 10:42:33,974 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:42:33,975 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:42:33,976 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:42:33,976 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:42:33,977 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:42:33,977 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:42:33,978 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:42:33,978 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:42:33,978 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:42:33,978 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:42:33,979 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:42:33,979 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:42:33,979 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:42:33,979 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:42:33,980 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:42:33,980 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_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ccd4b93de7420a1f7847638daedeeee3b82eb082e434a23182d7e5e0aee2085 [2023-11-26 10:42:34,249 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:42:34,271 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:42:34,274 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:42:34,275 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:42:34,276 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:42:34,277 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i [2023-11-26 10:42:37,375 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:42:37,742 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:42:37,746 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i [2023-11-26 10:42:37,775 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/data/fd2f3a36e/0f732cf6af7542899c567f9d03d01a4e/FLAGf4e962ae9 [2023-11-26 10:42:37,795 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/data/fd2f3a36e/0f732cf6af7542899c567f9d03d01a4e [2023-11-26 10:42:37,800 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:42:37,802 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:42:37,805 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:42:37,806 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:42:37,811 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:42:37,812 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:42:37" (1/1) ... [2023-11-26 10:42:37,813 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@411470ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:37, skipping insertion in model container [2023-11-26 10:42:37,814 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:42:37" (1/1) ... [2023-11-26 10:42:37,904 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:42:38,594 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:42:38,615 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) [2023-11-26 10:42:38,617 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1c58d9d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:38, skipping insertion in model container [2023-11-26 10:42:38,618 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:42:38,618 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-26 10:42:38,621 INFO L158 Benchmark]: Toolchain (without parser) took 817.48ms. Allocated memory is still 197.1MB. Free memory was 147.5MB in the beginning and 127.9MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-26 10:42:38,622 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 151.0MB. Free memory is still 97.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:42:38,623 INFO L158 Benchmark]: CACSL2BoogieTranslator took 813.02ms. Allocated memory is still 197.1MB. Free memory was 147.5MB in the beginning and 127.9MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-26 10:42:38,625 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 151.0MB. Free memory is still 97.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 813.02ms. Allocated memory is still 197.1MB. Free memory was 147.5MB in the beginning and 127.9MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 815]: 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_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme --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 1ccd4b93de7420a1f7847638daedeeee3b82eb082e434a23182d7e5e0aee2085 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:42:41,210 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:42:41,339 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-26 10:42:41,348 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:42:41,349 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:42:41,401 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:42:41,402 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:42:41,402 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:42:41,403 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:42:41,408 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:42:41,409 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:42:41,410 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:42:41,410 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:42:41,412 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:42:41,413 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:42:41,413 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:42:41,414 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:42:41,414 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:42:41,414 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:42:41,415 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:42:41,415 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 10:42:41,416 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 10:42:41,416 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 10:42:41,417 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:42:41,417 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 10:42:41,418 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-26 10:42:41,418 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-26 10:42:41,419 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 10:42:41,419 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:42:41,420 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:42:41,422 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:42:41,422 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:42:41,422 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:42:41,422 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:42:41,423 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:42:41,423 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:42:41,424 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:42:41,424 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-26 10:42:41,425 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-26 10:42:41,425 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:42:41,425 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:42:41,426 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:42:41,426 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:42:41,426 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-26 10:42:41,427 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_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ccd4b93de7420a1f7847638daedeeee3b82eb082e434a23182d7e5e0aee2085 [2023-11-26 10:42:41,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:42:41,860 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:42:41,862 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:42:41,864 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:42:41,865 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:42:41,866 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i [2023-11-26 10:42:45,110 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:42:45,538 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:42:45,539 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i [2023-11-26 10:42:45,560 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/data/81b2d6841/99c68399b6da4bc48e715d1022fe1bf2/FLAGda512b8fa [2023-11-26 10:42:45,574 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/data/81b2d6841/99c68399b6da4bc48e715d1022fe1bf2 [2023-11-26 10:42:45,577 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:42:45,579 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:42:45,583 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:42:45,584 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:42:45,588 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:42:45,589 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:42:45" (1/1) ... [2023-11-26 10:42:45,590 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@427fc4e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:45, skipping insertion in model container [2023-11-26 10:42:45,590 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:42:45" (1/1) ... [2023-11-26 10:42:45,665 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:42:46,470 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:42:46,502 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-26 10:42:46,520 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:42:46,673 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:42:46,678 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:42:46,801 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:42:46,870 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:42:46,879 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:42:46,879 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:46 WrapperNode [2023-11-26 10:42:46,880 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:42:46,881 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:42:46,881 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:42:46,881 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:42:46,889 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:46" (1/1) ... [2023-11-26 10:42:46,947 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:46" (1/1) ... [2023-11-26 10:42:47,043 INFO L138 Inliner]: procedures = 211, calls = 237, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 893 [2023-11-26 10:42:47,043 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:42:47,044 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:42:47,045 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:42:47,045 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:42:47,057 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:46" (1/1) ... [2023-11-26 10:42:47,057 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:46" (1/1) ... [2023-11-26 10:42:47,066 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:46" (1/1) ... [2023-11-26 10:42:47,171 INFO L175 MemorySlicer]: Split 213 memory accesses to 4 slices as follows [2, 172, 5, 34]. 81 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 47 writes are split as follows [0, 42, 1, 4]. [2023-11-26 10:42:47,184 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:46" (1/1) ... [2023-11-26 10:42:47,184 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:46" (1/1) ... [2023-11-26 10:42:47,247 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:46" (1/1) ... [2023-11-26 10:42:47,258 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:46" (1/1) ... [2023-11-26 10:42:47,264 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:46" (1/1) ... [2023-11-26 10:42:47,271 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:46" (1/1) ... [2023-11-26 10:42:47,283 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:42:47,284 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:42:47,284 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:42:47,284 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:42:47,285 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:46" (1/1) ... [2023-11-26 10:42:47,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:42:47,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:42:47,357 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:42:47,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:42:47,417 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-26 10:42:47,417 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-26 10:42:47,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-11-26 10:42:47,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-11-26 10:42:47,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-11-26 10:42:47,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-11-26 10:42:47,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-26 10:42:47,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-26 10:42:47,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-26 10:42:47,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-26 10:42:47,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2023-11-26 10:42:47,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2023-11-26 10:42:47,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2023-11-26 10:42:47,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2023-11-26 10:42:47,423 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2023-11-26 10:42:47,423 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2023-11-26 10:42:47,424 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2023-11-26 10:42:47,425 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2023-11-26 10:42:47,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 10:42:47,425 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-26 10:42:47,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-26 10:42:47,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-26 10:42:47,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-26 10:42:47,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-26 10:42:47,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 10:42:47,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-26 10:42:47,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-26 10:42:47,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-26 10:42:47,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-26 10:42:47,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-26 10:42:47,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-26 10:42:47,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-26 10:42:47,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-26 10:42:47,431 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-26 10:42:47,431 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-26 10:42:47,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 10:42:47,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:42:47,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-26 10:42:47,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-26 10:42:47,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-26 10:42:47,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-26 10:42:47,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:42:47,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:42:47,749 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:42:47,752 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:42:47,795 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-26 10:42:47,849 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-26 10:42:47,886 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-26 10:42:47,920 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-26 10:42:52,473 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:42:52,701 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:42:52,701 INFO L309 CfgBuilder]: Removed 54 assume(true) statements. [2023-11-26 10:42:52,702 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:42:52 BoogieIcfgContainer [2023-11-26 10:42:52,703 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:42:52,706 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:42:52,706 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:42:52,709 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:42:52,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:42:45" (1/3) ... [2023-11-26 10:42:52,710 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@731c5f17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:42:52, skipping insertion in model container [2023-11-26 10:42:52,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:46" (2/3) ... [2023-11-26 10:42:52,713 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@731c5f17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:42:52, skipping insertion in model container [2023-11-26 10:42:52,713 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:42:52" (3/3) ... [2023-11-26 10:42:52,716 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test2-1.i [2023-11-26 10:42:52,737 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:42:52,738 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 430 error locations. [2023-11-26 10:42:52,825 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:42:52,833 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;@e6dd59e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:42:52,833 INFO L358 AbstractCegarLoop]: Starting to check reachability of 430 error locations. [2023-11-26 10:42:52,841 INFO L276 IsEmpty]: Start isEmpty. Operand has 801 states, 360 states have (on average 2.4944444444444445) internal successors, (898), 794 states have internal predecessors, (898), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-26 10:42:52,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-26 10:42:52,848 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:42:52,848 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-26 10:42:52,849 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)] === [2023-11-26 10:42:52,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:52,855 INFO L85 PathProgramCache]: Analyzing trace with hash 47665, now seen corresponding path program 1 times [2023-11-26 10:42:52,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:42:52,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [75641341] [2023-11-26 10:42:52,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:52,870 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 [2023-11-26 10:42:52,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:42:52,873 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 10:42:52,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 10:42:53,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:53,112 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:42:53,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:42:53,187 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 [2023-11-26 10:42:53,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:42:53,206 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:42:53,206 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:42:53,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [75641341] [2023-11-26 10:42:53,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [75641341] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:53,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:53,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 10:42:53,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782291107] [2023-11-26 10:42:53,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:53,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:42:53,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:42:53,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:42:53,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:42:53,249 INFO L87 Difference]: Start difference. First operand has 801 states, 360 states have (on average 2.4944444444444445) internal successors, (898), 794 states have internal predecessors, (898), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-26 10:42:55,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:42:55,353 INFO L93 Difference]: Finished difference Result 789 states and 845 transitions. [2023-11-26 10:42:55,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:42:55,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2023-11-26 10:42:55,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:42:55,394 INFO L225 Difference]: With dead ends: 789 [2023-11-26 10:42:55,395 INFO L226 Difference]: Without dead ends: 788 [2023-11-26 10:42:55,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:42:55,401 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 729 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:42:55,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 483 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-26 10:42:55,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2023-11-26 10:42:55,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 787. [2023-11-26 10:42:55,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 363 states have (on average 2.275482093663912) internal successors, (826), 780 states have internal predecessors, (826), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 10:42:55,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 844 transitions. [2023-11-26 10:42:55,498 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 844 transitions. Word has length 2 [2023-11-26 10:42:55,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:42:55,499 INFO L495 AbstractCegarLoop]: Abstraction has 787 states and 844 transitions. [2023-11-26 10:42:55,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-26 10:42:55,500 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 844 transitions. [2023-11-26 10:42:55,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-26 10:42:55,500 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:42:55,500 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-26 10:42:55,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 10:42:55,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:42:55,707 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)] === [2023-11-26 10:42:55,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:55,708 INFO L85 PathProgramCache]: Analyzing trace with hash 47666, now seen corresponding path program 1 times [2023-11-26 10:42:55,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:42:55,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [969171251] [2023-11-26 10:42:55,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:55,709 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 [2023-11-26 10:42:55,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:42:55,711 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 10:42:55,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 10:42:55,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:55,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 10:42:55,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:42:55,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-26 10:42:55,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:42:55,909 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:42:55,909 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:42:55,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [969171251] [2023-11-26 10:42:55,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [969171251] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:55,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:55,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 10:42:55,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507044375] [2023-11-26 10:42:55,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:55,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:42:55,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:42:55,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:42:55,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:42:55,914 INFO L87 Difference]: Start difference. First operand 787 states and 844 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-26 10:42:58,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:42:58,971 INFO L93 Difference]: Finished difference Result 985 states and 1074 transitions. [2023-11-26 10:42:58,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:42:58,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2023-11-26 10:42:58,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:42:58,978 INFO L225 Difference]: With dead ends: 985 [2023-11-26 10:42:58,979 INFO L226 Difference]: Without dead ends: 985 [2023-11-26 10:42:58,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:42:58,980 INFO L413 NwaCegarLoop]: 678 mSDtfsCounter, 219 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:42:58,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 1080 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-26 10:42:58,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 985 states. [2023-11-26 10:42:59,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 985 to 899. [2023-11-26 10:42:59,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 471 states have (on average 2.21656050955414) internal successors, (1044), 892 states have internal predecessors, (1044), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-26 10:42:59,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1072 transitions. [2023-11-26 10:42:59,020 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1072 transitions. Word has length 2 [2023-11-26 10:42:59,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:42:59,021 INFO L495 AbstractCegarLoop]: Abstraction has 899 states and 1072 transitions. [2023-11-26 10:42:59,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-26 10:42:59,021 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1072 transitions. [2023-11-26 10:42:59,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-26 10:42:59,022 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:42:59,022 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-26 10:42:59,029 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 10:42:59,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:42:59,224 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)] === [2023-11-26 10:42:59,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:59,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1070701435, now seen corresponding path program 1 times [2023-11-26 10:42:59,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:42:59,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [717903846] [2023-11-26 10:42:59,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:59,226 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 [2023-11-26 10:42:59,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:42:59,233 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 10:42:59,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 10:42:59,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:59,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 10:42:59,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:42:59,406 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 [2023-11-26 10:42:59,413 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 [2023-11-26 10:42:59,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:59,490 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 [2023-11-26 10:42:59,511 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-26 10:42:59,512 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 [2023-11-26 10:42:59,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:42:59,533 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:42:59,533 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:42:59,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [717903846] [2023-11-26 10:42:59,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [717903846] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:59,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:59,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:42:59,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613867819] [2023-11-26 10:42:59,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:59,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:42:59,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:42:59,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:42:59,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:42:59,536 INFO L87 Difference]: Start difference. First operand 899 states and 1072 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:02,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:02,215 INFO L93 Difference]: Finished difference Result 889 states and 1061 transitions. [2023-11-26 10:43:02,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:43:02,216 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-26 10:43:02,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:02,221 INFO L225 Difference]: With dead ends: 889 [2023-11-26 10:43:02,222 INFO L226 Difference]: Without dead ends: 889 [2023-11-26 10:43:02,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:43:02,223 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 794 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:02,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 257 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-26 10:43:02,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2023-11-26 10:43:02,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 776. [2023-11-26 10:43:02,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 363 states have (on average 2.242424242424242) internal successors, (814), 769 states have internal predecessors, (814), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 10:43:02,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 832 transitions. [2023-11-26 10:43:02,250 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 832 transitions. Word has length 6 [2023-11-26 10:43:02,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:02,251 INFO L495 AbstractCegarLoop]: Abstraction has 776 states and 832 transitions. [2023-11-26 10:43:02,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:02,252 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 832 transitions. [2023-11-26 10:43:02,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-26 10:43:02,252 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:02,252 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:02,259 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 10:43:02,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:02,455 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)] === [2023-11-26 10:43:02,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:02,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1167993873, now seen corresponding path program 1 times [2023-11-26 10:43:02,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:43:02,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [207067276] [2023-11-26 10:43:02,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:02,457 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:02,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:43:02,458 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 10:43:02,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 10:43:02,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:02,613 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:43:02,615 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:02,623 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 [2023-11-26 10:43:02,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:02,636 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:02,636 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:43:02,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [207067276] [2023-11-26 10:43:02,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [207067276] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:02,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:02,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:43:02,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318432875] [2023-11-26 10:43:02,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:02,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:43:02,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:43:02,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:43:02,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:43:02,639 INFO L87 Difference]: Start difference. First operand 776 states and 832 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2023-11-26 10:43:04,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:04,728 INFO L93 Difference]: Finished difference Result 929 states and 1017 transitions. [2023-11-26 10:43:04,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:43:04,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 [2023-11-26 10:43:04,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:04,736 INFO L225 Difference]: With dead ends: 929 [2023-11-26 10:43:04,736 INFO L226 Difference]: Without dead ends: 929 [2023-11-26 10:43:04,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:43:04,737 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 732 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:04,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 722 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-26 10:43:04,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2023-11-26 10:43:04,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 729. [2023-11-26 10:43:04,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 363 states have (on average 2.112947658402204) internal successors, (767), 722 states have internal predecessors, (767), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 10:43:04,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 785 transitions. [2023-11-26 10:43:04,761 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 785 transitions. Word has length 7 [2023-11-26 10:43:04,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:04,761 INFO L495 AbstractCegarLoop]: Abstraction has 729 states and 785 transitions. [2023-11-26 10:43:04,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2023-11-26 10:43:04,762 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 785 transitions. [2023-11-26 10:43:04,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-26 10:43:04,762 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:04,763 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:04,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 10:43:04,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:04,965 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)] === [2023-11-26 10:43:04,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:04,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1167993872, now seen corresponding path program 1 times [2023-11-26 10:43:04,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:43:04,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [455149890] [2023-11-26 10:43:04,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:04,966 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 [2023-11-26 10:43:04,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:43:04,968 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 10:43:04,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 10:43:05,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:05,102 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 10:43:05,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:05,114 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 [2023-11-26 10:43:05,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:05,138 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:05,138 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:43:05,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [455149890] [2023-11-26 10:43:05,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [455149890] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:05,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:05,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:43:05,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530595111] [2023-11-26 10:43:05,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:05,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:43:05,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:43:05,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:43:05,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:43:05,141 INFO L87 Difference]: Start difference. First operand 729 states and 785 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2023-11-26 10:43:08,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:08,106 INFO L93 Difference]: Finished difference Result 989 states and 1079 transitions. [2023-11-26 10:43:08,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:43:08,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 [2023-11-26 10:43:08,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:08,113 INFO L225 Difference]: With dead ends: 989 [2023-11-26 10:43:08,113 INFO L226 Difference]: Without dead ends: 989 [2023-11-26 10:43:08,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:43:08,114 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 452 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:08,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 1005 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-26 10:43:08,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 989 states. [2023-11-26 10:43:08,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 989 to 742. [2023-11-26 10:43:08,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 386 states have (on average 2.1088082901554404) internal successors, (814), 735 states have internal predecessors, (814), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 10:43:08,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 832 transitions. [2023-11-26 10:43:08,138 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 832 transitions. Word has length 7 [2023-11-26 10:43:08,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:08,139 INFO L495 AbstractCegarLoop]: Abstraction has 742 states and 832 transitions. [2023-11-26 10:43:08,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2023-11-26 10:43:08,139 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 832 transitions. [2023-11-26 10:43:08,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-26 10:43:08,140 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:08,140 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:08,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:08,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:08,343 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)] === [2023-11-26 10:43:08,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:08,344 INFO L85 PathProgramCache]: Analyzing trace with hash -648164610, now seen corresponding path program 1 times [2023-11-26 10:43:08,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:43:08,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [610801678] [2023-11-26 10:43:08,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:08,345 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 [2023-11-26 10:43:08,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:43:08,346 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 10:43:08,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 10:43:08,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:08,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 10:43:08,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:08,583 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-26 10:43:08,584 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-26 10:43:08,585 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-26 10:43:08,593 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 [2023-11-26 10:43:08,676 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-26 10:43:08,677 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 [2023-11-26 10:43:08,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:08,705 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:08,705 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:43:08,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [610801678] [2023-11-26 10:43:08,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [610801678] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:08,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:08,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:43:08,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999930923] [2023-11-26 10:43:08,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:08,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:43:08,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:43:08,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:43:08,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:43:08,708 INFO L87 Difference]: Start difference. First operand 742 states and 832 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2023-11-26 10:43:11,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:11,208 INFO L93 Difference]: Finished difference Result 1468 states and 1649 transitions. [2023-11-26 10:43:11,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:43:11,209 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2023-11-26 10:43:11,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:11,217 INFO L225 Difference]: With dead ends: 1468 [2023-11-26 10:43:11,217 INFO L226 Difference]: Without dead ends: 1468 [2023-11-26 10:43:11,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:43:11,219 INFO L413 NwaCegarLoop]: 841 mSDtfsCounter, 732 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 2330 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:11,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 2330 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-26 10:43:11,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1468 states. [2023-11-26 10:43:11,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1468 to 744. [2023-11-26 10:43:11,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 388 states have (on average 2.1030927835051547) internal successors, (816), 737 states have internal predecessors, (816), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 10:43:11,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 834 transitions. [2023-11-26 10:43:11,245 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 834 transitions. Word has length 9 [2023-11-26 10:43:11,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:11,245 INFO L495 AbstractCegarLoop]: Abstraction has 744 states and 834 transitions. [2023-11-26 10:43:11,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2023-11-26 10:43:11,246 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 834 transitions. [2023-11-26 10:43:11,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-26 10:43:11,247 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:11,247 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:11,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -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)] Ended with exit code 0 [2023-11-26 10:43:11,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:11,451 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 427 more)] === [2023-11-26 10:43:11,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:11,451 INFO L85 PathProgramCache]: Analyzing trace with hash -305951994, now seen corresponding path program 1 times [2023-11-26 10:43:11,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:43:11,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [493705534] [2023-11-26 10:43:11,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:11,452 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 [2023-11-26 10:43:11,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:43:11,459 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 10:43:11,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 10:43:11,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:11,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 10:43:11,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:11,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:11,734 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:11,735 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:43:11,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [493705534] [2023-11-26 10:43:11,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [493705534] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:11,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:11,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:43:11,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721187887] [2023-11-26 10:43:11,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:11,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:43:11,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:43:11,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:43:11,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:43:11,739 INFO L87 Difference]: Start difference. First operand 744 states and 834 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2023-11-26 10:43:12,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:12,616 INFO L93 Difference]: Finished difference Result 705 states and 794 transitions. [2023-11-26 10:43:12,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:43:12,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 15 [2023-11-26 10:43:12,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:12,622 INFO L225 Difference]: With dead ends: 705 [2023-11-26 10:43:12,622 INFO L226 Difference]: Without dead ends: 705 [2023-11-26 10:43:12,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:43:12,623 INFO L413 NwaCegarLoop]: 629 mSDtfsCounter, 70 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:12,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 1209 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-26 10:43:12,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2023-11-26 10:43:12,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 705. [2023-11-26 10:43:12,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 373 states have (on average 2.0804289544235925) internal successors, (776), 698 states have internal predecessors, (776), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 10:43:12,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 794 transitions. [2023-11-26 10:43:12,640 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 794 transitions. Word has length 15 [2023-11-26 10:43:12,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:12,641 INFO L495 AbstractCegarLoop]: Abstraction has 705 states and 794 transitions. [2023-11-26 10:43:12,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2023-11-26 10:43:12,641 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 794 transitions. [2023-11-26 10:43:12,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-26 10:43:12,642 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:12,642 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:12,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:12,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:12,847 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 427 more)] === [2023-11-26 10:43:12,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:12,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1962092576, now seen corresponding path program 1 times [2023-11-26 10:43:12,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:43:12,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1479821473] [2023-11-26 10:43:12,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:12,849 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 [2023-11-26 10:43:12,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:43:12,850 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 10:43:12,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-26 10:43:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:13,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:43:13,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:13,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:13,072 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:13,073 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:43:13,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1479821473] [2023-11-26 10:43:13,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1479821473] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:13,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:13,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:43:13,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251037837] [2023-11-26 10:43:13,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:13,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:43:13,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:43:13,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:43:13,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:43:13,075 INFO L87 Difference]: Start difference. First operand 705 states and 794 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:14,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:14,085 INFO L93 Difference]: Finished difference Result 691 states and 773 transitions. [2023-11-26 10:43:14,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:43:14,087 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-26 10:43:14,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:14,090 INFO L225 Difference]: With dead ends: 691 [2023-11-26 10:43:14,091 INFO L226 Difference]: Without dead ends: 691 [2023-11-26 10:43:14,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:43:14,092 INFO L413 NwaCegarLoop]: 598 mSDtfsCounter, 58 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 1770 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:14,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 1770 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-26 10:43:14,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2023-11-26 10:43:14,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 690. [2023-11-26 10:43:14,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 372 states have (on average 2.0268817204301075) internal successors, (754), 683 states have internal predecessors, (754), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 10:43:14,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 772 transitions. [2023-11-26 10:43:14,110 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 772 transitions. Word has length 17 [2023-11-26 10:43:14,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:14,111 INFO L495 AbstractCegarLoop]: Abstraction has 690 states and 772 transitions. [2023-11-26 10:43:14,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:14,111 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 772 transitions. [2023-11-26 10:43:14,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-26 10:43:14,112 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:14,112 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:14,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-11-26 10:43:14,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:14,316 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 427 more)] === [2023-11-26 10:43:14,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:14,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1060196302, now seen corresponding path program 1 times [2023-11-26 10:43:14,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:43:14,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1256986369] [2023-11-26 10:43:14,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:14,318 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 [2023-11-26 10:43:14,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:43:14,320 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 10:43:14,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-26 10:43:14,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:14,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 10:43:14,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:14,564 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 [2023-11-26 10:43:14,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:14,698 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:14,698 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:43:14,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1256986369] [2023-11-26 10:43:14,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1256986369] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:14,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:14,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:43:14,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249134064] [2023-11-26 10:43:14,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:14,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:43:14,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:43:14,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:43:14,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:43:14,701 INFO L87 Difference]: Start difference. First operand 690 states and 772 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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) [2023-11-26 10:43:17,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:17,203 INFO L93 Difference]: Finished difference Result 886 states and 1000 transitions. [2023-11-26 10:43:17,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:43:17,204 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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 31 [2023-11-26 10:43:17,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:17,209 INFO L225 Difference]: With dead ends: 886 [2023-11-26 10:43:17,209 INFO L226 Difference]: Without dead ends: 886 [2023-11-26 10:43:17,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:43:17,210 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 665 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 866 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:17,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [673 Valid, 750 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 866 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-26 10:43:17,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2023-11-26 10:43:17,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 686. [2023-11-26 10:43:17,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 372 states have (on average 2.0161290322580645) internal successors, (750), 679 states have internal predecessors, (750), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 10:43:17,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 768 transitions. [2023-11-26 10:43:17,228 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 768 transitions. Word has length 31 [2023-11-26 10:43:17,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:17,229 INFO L495 AbstractCegarLoop]: Abstraction has 686 states and 768 transitions. [2023-11-26 10:43:17,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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) [2023-11-26 10:43:17,229 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 768 transitions. [2023-11-26 10:43:17,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-26 10:43:17,230 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:17,230 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:17,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:17,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:17,435 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 427 more)] === [2023-11-26 10:43:17,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:17,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1060196303, now seen corresponding path program 1 times [2023-11-26 10:43:17,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:43:17,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1898602709] [2023-11-26 10:43:17,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:17,437 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 [2023-11-26 10:43:17,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:43:17,440 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 10:43:17,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-26 10:43:17,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:17,655 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:43:17,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:17,674 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 [2023-11-26 10:43:17,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:17,906 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:17,906 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:43:17,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1898602709] [2023-11-26 10:43:17,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1898602709] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:17,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:17,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:43:17,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029412537] [2023-11-26 10:43:17,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:17,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:43:17,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:43:17,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:43:17,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:43:17,908 INFO L87 Difference]: Start difference. First operand 686 states and 768 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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) [2023-11-26 10:43:21,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:21,387 INFO L93 Difference]: Finished difference Result 929 states and 1011 transitions. [2023-11-26 10:43:21,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:43:21,388 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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 31 [2023-11-26 10:43:21,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:21,393 INFO L225 Difference]: With dead ends: 929 [2023-11-26 10:43:21,393 INFO L226 Difference]: Without dead ends: 929 [2023-11-26 10:43:21,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:43:21,394 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 387 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 1046 SdHoareTripleChecker+Invalid, 911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:21,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 1046 Invalid, 911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-26 10:43:21,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2023-11-26 10:43:21,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 682. [2023-11-26 10:43:21,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 372 states have (on average 2.0053763440860215) internal successors, (746), 675 states have internal predecessors, (746), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 10:43:21,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 764 transitions. [2023-11-26 10:43:21,413 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 764 transitions. Word has length 31 [2023-11-26 10:43:21,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:21,413 INFO L495 AbstractCegarLoop]: Abstraction has 682 states and 764 transitions. [2023-11-26 10:43:21,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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) [2023-11-26 10:43:21,414 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 764 transitions. [2023-11-26 10:43:21,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-26 10:43:21,415 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:21,415 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:21,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:21,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:21,620 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 427 more)] === [2023-11-26 10:43:21,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:21,620 INFO L85 PathProgramCache]: Analyzing trace with hash 319790408, now seen corresponding path program 1 times [2023-11-26 10:43:21,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:43:21,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [241681909] [2023-11-26 10:43:21,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:21,621 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 [2023-11-26 10:43:21,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:43:21,622 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 10:43:21,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-26 10:43:21,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:21,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:43:21,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:21,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:21,969 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:21,969 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:43:21,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [241681909] [2023-11-26 10:43:21,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [241681909] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:21,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:21,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:43:21,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153760813] [2023-11-26 10:43:21,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:21,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:43:21,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:43:21,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:43:21,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:43:21,972 INFO L87 Difference]: Start difference. First operand 682 states and 764 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2023-11-26 10:43:23,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:23,016 INFO L93 Difference]: Finished difference Result 676 states and 754 transitions. [2023-11-26 10:43:23,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:43:23,019 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 47 [2023-11-26 10:43:23,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:23,026 INFO L225 Difference]: With dead ends: 676 [2023-11-26 10:43:23,026 INFO L226 Difference]: Without dead ends: 676 [2023-11-26 10:43:23,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:43:23,027 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 23 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 1756 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:23,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 1756 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-26 10:43:23,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2023-11-26 10:43:23,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 676. [2023-11-26 10:43:23,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 366 states have (on average 2.010928961748634) internal successors, (736), 669 states have internal predecessors, (736), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 10:43:23,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 754 transitions. [2023-11-26 10:43:23,052 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 754 transitions. Word has length 47 [2023-11-26 10:43:23,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:23,052 INFO L495 AbstractCegarLoop]: Abstraction has 676 states and 754 transitions. [2023-11-26 10:43:23,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2023-11-26 10:43:23,053 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 754 transitions. [2023-11-26 10:43:23,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-26 10:43:23,060 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:23,061 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:23,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:23,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:23,265 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 427 more)] === [2023-11-26 10:43:23,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:23,266 INFO L85 PathProgramCache]: Analyzing trace with hash 193945193, now seen corresponding path program 1 times [2023-11-26 10:43:23,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:43:23,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [348544843] [2023-11-26 10:43:23,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:23,267 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 [2023-11-26 10:43:23,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:43:23,268 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 10:43:23,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-26 10:43:23,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:23,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:43:23,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:23,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:23,909 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:23,909 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:43:23,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [348544843] [2023-11-26 10:43:23,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [348544843] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:23,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:23,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:43:23,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724713151] [2023-11-26 10:43:23,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:23,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:43:23,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:43:23,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:43:23,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:43:23,911 INFO L87 Difference]: Start difference. First operand 676 states and 754 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:24,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:24,956 INFO L93 Difference]: Finished difference Result 857 states and 958 transitions. [2023-11-26 10:43:24,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:43:24,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-11-26 10:43:24,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:24,961 INFO L225 Difference]: With dead ends: 857 [2023-11-26 10:43:24,962 INFO L226 Difference]: Without dead ends: 857 [2023-11-26 10:43:24,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:43:24,962 INFO L413 NwaCegarLoop]: 716 mSDtfsCounter, 205 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 1227 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:24,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 1227 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-26 10:43:24,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2023-11-26 10:43:24,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 803. [2023-11-26 10:43:24,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 488 states have (on average 1.8995901639344261) internal successors, (927), 796 states have internal predecessors, (927), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-26 10:43:24,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 955 transitions. [2023-11-26 10:43:24,987 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 955 transitions. Word has length 51 [2023-11-26 10:43:24,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:24,989 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 955 transitions. [2023-11-26 10:43:24,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:24,990 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 955 transitions. [2023-11-26 10:43:24,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-26 10:43:24,991 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:24,992 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:25,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:25,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:25,198 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 427 more)] === [2023-11-26 10:43:25,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:25,198 INFO L85 PathProgramCache]: Analyzing trace with hash 982802402, now seen corresponding path program 1 times [2023-11-26 10:43:25,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:43:25,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1962804970] [2023-11-26 10:43:25,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:25,199 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 [2023-11-26 10:43:25,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:43:25,200 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 10:43:25,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-26 10:43:25,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:25,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 10:43:25,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:25,647 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 [2023-11-26 10:43:25,654 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 [2023-11-26 10:43:26,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:43:26,271 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 [2023-11-26 10:43:26,283 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-26 10:43:26,284 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 [2023-11-26 10:43:26,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:26,309 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:26,309 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:43:26,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1962804970] [2023-11-26 10:43:26,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1962804970] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:26,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:26,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:43:26,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4199773] [2023-11-26 10:43:26,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:26,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:43:26,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:43:26,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:43:26,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:43:26,313 INFO L87 Difference]: Start difference. First operand 803 states and 955 transitions. Second operand has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:28,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:28,951 INFO L93 Difference]: Finished difference Result 1046 states and 1304 transitions. [2023-11-26 10:43:28,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:43:28,952 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-11-26 10:43:28,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:28,958 INFO L225 Difference]: With dead ends: 1046 [2023-11-26 10:43:28,958 INFO L226 Difference]: Without dead ends: 1046 [2023-11-26 10:43:28,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:43:28,959 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 1354 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1367 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:28,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1367 Valid, 295 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-26 10:43:28,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2023-11-26 10:43:28,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 742. [2023-11-26 10:43:28,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 465 states have (on average 1.789247311827957) internal successors, (832), 735 states have internal predecessors, (832), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-26 10:43:28,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 860 transitions. [2023-11-26 10:43:28,980 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 860 transitions. Word has length 54 [2023-11-26 10:43:28,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:28,980 INFO L495 AbstractCegarLoop]: Abstraction has 742 states and 860 transitions. [2023-11-26 10:43:28,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:28,981 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 860 transitions. [2023-11-26 10:43:28,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-26 10:43:28,982 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:28,982 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:28,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:29,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:29,189 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 427 more)] === [2023-11-26 10:43:29,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:29,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1507704915, now seen corresponding path program 1 times [2023-11-26 10:43:29,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:43:29,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [764953506] [2023-11-26 10:43:29,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:29,191 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:43:29,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:43:29,192 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 10:43:29,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607b0c61-61a2-4520-bcc1-67eaba45245d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-26 10:43:29,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:29,556 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:43:29,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:29,567 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 [2023-11-26 10:43:29,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-26 10:43:29,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-26 10:43:29,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:29,634 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:29,635 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:43:29,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [764953506] [2023-11-26 10:43:29,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [764953506] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:29,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:29,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:43:29,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108931317] [2023-11-26 10:43:29,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:29,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:43:29,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:43:29,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:43:29,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:43:29,637 INFO L87 Difference]: Start difference. First operand 742 states and 860 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)