./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 527bcce2 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_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx --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 da01f7e29b47732481465e941f69a1c8f9dd5529ae81cb8448eb7568570e2356 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 20:58:20,017 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 20:58:20,177 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-21 20:58:20,189 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 20:58:20,190 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 20:58:20,238 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 20:58:20,239 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 20:58:20,239 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 20:58:20,240 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 20:58:20,248 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 20:58:20,249 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 20:58:20,250 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 20:58:20,250 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 20:58:20,252 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 20:58:20,253 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 20:58:20,253 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 20:58:20,254 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 20:58:20,254 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 20:58:20,255 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 20:58:20,255 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 20:58:20,255 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 20:58:20,256 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 20:58:20,257 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 20:58:20,257 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 20:58:20,257 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 20:58:20,258 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 20:58:20,259 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 20:58:20,259 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 20:58:20,260 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 20:58:20,260 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 20:58:20,262 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 20:58:20,262 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 20:58:20,262 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 20:58:20,263 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 20:58:20,263 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 20:58:20,263 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 20:58:20,263 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 20:58:20,264 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 20:58:20,264 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 20:58:20,264 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_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da01f7e29b47732481465e941f69a1c8f9dd5529ae81cb8448eb7568570e2356 [2023-11-21 20:58:20,607 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 20:58:20,634 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 20:58:20,639 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 20:58:20,641 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 20:58:20,641 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 20:58:20,643 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i [2023-11-21 20:58:23,844 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 20:58:24,240 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 20:58:24,241 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i [2023-11-21 20:58:24,271 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/data/e53feaa24/85791029d8b848e283bd7774b2c058ed/FLAG5581f553c [2023-11-21 20:58:24,289 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/data/e53feaa24/85791029d8b848e283bd7774b2c058ed [2023-11-21 20:58:24,295 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 20:58:24,298 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 20:58:24,300 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 20:58:24,300 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 20:58:24,306 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 20:58:24,307 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:58:24" (1/1) ... [2023-11-21 20:58:24,308 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38d032a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:24, skipping insertion in model container [2023-11-21 20:58:24,308 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:58:24" (1/1) ... [2023-11-21 20:58:24,401 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 20:58:25,187 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 20:58:25,200 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) [2023-11-21 20:58:25,201 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@74ab8551 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:25, skipping insertion in model container [2023-11-21 20:58:25,201 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 20:58:25,202 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-21 20:58:25,204 INFO L158 Benchmark]: Toolchain (without parser) took 905.60ms. Allocated memory is still 155.2MB. Free memory was 115.5MB in the beginning and 95.2MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-21 20:58:25,205 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 107.0MB. Free memory is still 80.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 20:58:25,206 INFO L158 Benchmark]: CACSL2BoogieTranslator took 902.38ms. Allocated memory is still 155.2MB. Free memory was 115.5MB in the beginning and 95.2MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-21 20:58:25,207 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 107.0MB. Free memory is still 80.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 902.38ms. Allocated memory is still 155.2MB. Free memory was 115.5MB in the beginning and 95.2MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. 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_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx --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 da01f7e29b47732481465e941f69a1c8f9dd5529ae81cb8448eb7568570e2356 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 20:58:27,748 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 20:58:27,888 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-21 20:58:27,908 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 20:58:27,909 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 20:58:27,944 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 20:58:27,945 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 20:58:27,946 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 20:58:27,947 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 20:58:27,948 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 20:58:27,949 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 20:58:27,949 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 20:58:27,950 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 20:58:27,951 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 20:58:27,951 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 20:58:27,952 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 20:58:27,953 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 20:58:27,953 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 20:58:27,954 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 20:58:27,955 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 20:58:27,955 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 20:58:27,956 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 20:58:27,957 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 20:58:27,957 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 20:58:27,958 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 20:58:27,958 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 20:58:27,959 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 20:58:27,960 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 20:58:27,960 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 20:58:27,961 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 20:58:27,961 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 20:58:27,962 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 20:58:27,962 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 20:58:27,963 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 20:58:27,964 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 20:58:27,964 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-21 20:58:27,965 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 20:58:27,965 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 20:58:27,966 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 20:58:27,966 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 20:58:27,971 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 20:58:27,972 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-21 20:58:27,972 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_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da01f7e29b47732481465e941f69a1c8f9dd5529ae81cb8448eb7568570e2356 [2023-11-21 20:58:28,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 20:58:28,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 20:58:28,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 20:58:28,415 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 20:58:28,416 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 20:58:28,417 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i [2023-11-21 20:58:31,595 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 20:58:31,959 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 20:58:31,960 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i [2023-11-21 20:58:32,000 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/data/9aa7fec85/28c6bebf76a94a68909319b1f4973026/FLAGa83287fa8 [2023-11-21 20:58:32,016 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/data/9aa7fec85/28c6bebf76a94a68909319b1f4973026 [2023-11-21 20:58:32,019 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 20:58:32,021 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 20:58:32,022 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 20:58:32,022 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 20:58:32,028 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 20:58:32,029 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:58:32" (1/1) ... [2023-11-21 20:58:32,030 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3620dac9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:32, skipping insertion in model container [2023-11-21 20:58:32,030 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:58:32" (1/1) ... [2023-11-21 20:58:32,135 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 20:58:32,994 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 20:58:33,019 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-21 20:58:33,038 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 20:58:33,158 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 20:58:33,164 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 20:58:33,264 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 20:58:33,320 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 20:58:33,328 INFO L206 MainTranslator]: Completed translation [2023-11-21 20:58:33,330 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:33 WrapperNode [2023-11-21 20:58:33,330 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 20:58:33,331 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 20:58:33,332 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 20:58:33,332 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 20:58:33,340 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:33" (1/1) ... [2023-11-21 20:58:33,397 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:33" (1/1) ... [2023-11-21 20:58:33,486 INFO L138 Inliner]: procedures = 211, calls = 288, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1060 [2023-11-21 20:58:33,489 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 20:58:33,491 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 20:58:33,491 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 20:58:33,491 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 20:58:33,501 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:33" (1/1) ... [2023-11-21 20:58:33,501 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:33" (1/1) ... [2023-11-21 20:58:33,522 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:33" (1/1) ... [2023-11-21 20:58:33,523 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:33" (1/1) ... [2023-11-21 20:58:33,580 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:33" (1/1) ... [2023-11-21 20:58:33,590 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:33" (1/1) ... [2023-11-21 20:58:33,596 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:33" (1/1) ... [2023-11-21 20:58:33,602 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:33" (1/1) ... [2023-11-21 20:58:33,624 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 20:58:33,632 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 20:58:33,632 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 20:58:33,632 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 20:58:33,633 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:33" (1/1) ... [2023-11-21 20:58:33,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 20:58:33,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:58:33,671 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 20:58:33,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 20:58:33,711 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-21 20:58:33,711 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-21 20:58:33,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-21 20:58:33,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-21 20:58:33,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-21 20:58:33,711 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-21 20:58:33,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 20:58:33,711 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-21 20:58:33,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 20:58:33,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 20:58:33,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-21 20:58:33,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-21 20:58:33,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-21 20:58:33,712 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-21 20:58:33,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 20:58:33,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 20:58:33,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 20:58:33,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 20:58:33,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 20:58:33,938 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 20:58:33,940 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 20:58:33,979 WARN L820 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-21 20:58:39,219 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 20:58:39,492 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 20:58:39,493 INFO L308 CfgBuilder]: Removed 63 assume(true) statements. [2023-11-21 20:58:39,495 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:58:39 BoogieIcfgContainer [2023-11-21 20:58:39,495 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 20:58:39,498 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 20:58:39,498 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 20:58:39,501 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 20:58:39,502 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 08:58:32" (1/3) ... [2023-11-21 20:58:39,503 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@246eaeec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:58:39, skipping insertion in model container [2023-11-21 20:58:39,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:33" (2/3) ... [2023-11-21 20:58:39,503 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@246eaeec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:58:39, skipping insertion in model container [2023-11-21 20:58:39,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:58:39" (3/3) ... [2023-11-21 20:58:39,505 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test2-2.i [2023-11-21 20:58:39,525 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 20:58:39,525 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 535 error locations. [2023-11-21 20:58:39,593 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 20:58:39,602 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;@5b0463b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 20:58:39,603 INFO L358 AbstractCegarLoop]: Starting to check reachability of 535 error locations. [2023-11-21 20:58:39,618 INFO L276 IsEmpty]: Start isEmpty. Operand has 979 states, 433 states have (on average 2.5173210161662816) internal successors, (1090), 972 states have internal predecessors, (1090), 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) [2023-11-21 20:58:39,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-21 20:58:39,629 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:58:39,630 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-21 20:58:39,630 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-21 20:58:39,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:58:39,638 INFO L85 PathProgramCache]: Analyzing trace with hash 55202, now seen corresponding path program 1 times [2023-11-21 20:58:39,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 20:58:39,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [756249928] [2023-11-21 20:58:39,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:58:39,652 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 [2023-11-21 20:58:39,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 20:58:39,653 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 20:58:39,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 20:58:39,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:39,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 20:58:39,818 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:58:39,897 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 [2023-11-21 20:58:39,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:58:39,911 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:58:39,912 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 20:58:39,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [756249928] [2023-11-21 20:58:39,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [756249928] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:58:39,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:58:39,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 20:58:39,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513570105] [2023-11-21 20:58:39,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:58:39,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 20:58:39,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 20:58:39,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 20:58:39,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:58:39,951 INFO L87 Difference]: Start difference. First operand has 979 states, 433 states have (on average 2.5173210161662816) internal successors, (1090), 972 states have internal predecessors, (1090), 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) [2023-11-21 20:58:42,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:58:42,598 INFO L93 Difference]: Finished difference Result 1130 states and 1206 transitions. [2023-11-21 20:58:42,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 20:58:42,606 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 [2023-11-21 20:58:42,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:58:42,632 INFO L225 Difference]: With dead ends: 1130 [2023-11-21 20:58:42,632 INFO L226 Difference]: Without dead ends: 1129 [2023-11-21 20:58:42,634 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 [2023-11-21 20:58:42,638 INFO L413 NwaCegarLoop]: 537 mSDtfsCounter, 901 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-21 20:58:42,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 664 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-21 20:58:42,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2023-11-21 20:58:42,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 965. [2023-11-21 20:58:42,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 436 states have (on average 2.3279816513761467) internal successors, (1015), 958 states have internal predecessors, (1015), 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) [2023-11-21 20:58:42,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1033 transitions. [2023-11-21 20:58:42,741 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1033 transitions. Word has length 2 [2023-11-21 20:58:42,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:58:42,741 INFO L495 AbstractCegarLoop]: Abstraction has 965 states and 1033 transitions. [2023-11-21 20:58:42,741 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) [2023-11-21 20:58:42,742 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1033 transitions. [2023-11-21 20:58:42,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-21 20:58:42,742 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:58:42,742 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-21 20:58:42,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-21 20:58:42,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:58:42,951 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-21 20:58:42,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:58:42,952 INFO L85 PathProgramCache]: Analyzing trace with hash 55203, now seen corresponding path program 1 times [2023-11-21 20:58:42,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 20:58:42,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1907535786] [2023-11-21 20:58:42,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:58:42,953 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 [2023-11-21 20:58:42,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 20:58:42,958 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 20:58:43,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 20:58:43,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:43,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 20:58:43,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:58:43,167 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 [2023-11-21 20:58:43,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:58:43,180 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:58:43,180 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 20:58:43,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1907535786] [2023-11-21 20:58:43,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1907535786] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:58:43,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:58:43,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 20:58:43,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253034462] [2023-11-21 20:58:43,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:58:43,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 20:58:43,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 20:58:43,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 20:58:43,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:58:43,184 INFO L87 Difference]: Start difference. First operand 965 states and 1033 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) [2023-11-21 20:58:47,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:58:47,115 INFO L93 Difference]: Finished difference Result 1344 states and 1455 transitions. [2023-11-21 20:58:47,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 20:58:47,116 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 [2023-11-21 20:58:47,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:58:47,124 INFO L225 Difference]: With dead ends: 1344 [2023-11-21 20:58:47,124 INFO L226 Difference]: Without dead ends: 1344 [2023-11-21 20:58:47,125 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 [2023-11-21 20:58:47,126 INFO L413 NwaCegarLoop]: 765 mSDtfsCounter, 411 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 1255 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-21 20:58:47,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 1255 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-21 20:58:47,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1344 states. [2023-11-21 20:58:47,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1344 to 1076. [2023-11-21 20:58:47,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1076 states, 543 states have (on average 2.268876611418048) internal successors, (1232), 1069 states have internal predecessors, (1232), 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) [2023-11-21 20:58:47,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1260 transitions. [2023-11-21 20:58:47,169 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1260 transitions. Word has length 2 [2023-11-21 20:58:47,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:58:47,169 INFO L495 AbstractCegarLoop]: Abstraction has 1076 states and 1260 transitions. [2023-11-21 20:58:47,170 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) [2023-11-21 20:58:47,170 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1260 transitions. [2023-11-21 20:58:47,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-21 20:58:47,170 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:58:47,171 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 20:58:47,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-21 20:58:47,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:58:47,373 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-21 20:58:47,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:58:47,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1644576548, now seen corresponding path program 1 times [2023-11-21 20:58:47,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 20:58:47,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [577178810] [2023-11-21 20:58:47,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:58:47,375 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 [2023-11-21 20:58:47,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 20:58:47,380 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 20:58:47,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 20:58:47,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:47,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 20:58:47,548 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:58:47,562 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 [2023-11-21 20:58:47,574 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 [2023-11-21 20:58:47,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:58:47,655 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 [2023-11-21 20:58:47,680 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-21 20:58:47,681 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 [2023-11-21 20:58:47,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:58:47,698 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:58:47,699 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 20:58:47,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [577178810] [2023-11-21 20:58:47,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [577178810] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:58:47,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:58:47,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 20:58:47,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829106340] [2023-11-21 20:58:47,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:58:47,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 20:58:47,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 20:58:47,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 20:58:47,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 20:58:47,702 INFO L87 Difference]: Start difference. First operand 1076 states and 1260 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:58:51,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:58:51,497 INFO L93 Difference]: Finished difference Result 1229 states and 1421 transitions. [2023-11-21 20:58:51,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 20:58:51,498 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-21 20:58:51,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:58:51,505 INFO L225 Difference]: With dead ends: 1229 [2023-11-21 20:58:51,505 INFO L226 Difference]: Without dead ends: 1229 [2023-11-21 20:58:51,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 20:58:51,507 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 1153 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1161 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 1002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-21 20:58:51,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1161 Valid, 342 Invalid, 1002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 986 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-21 20:58:51,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2023-11-21 20:58:51,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 954. [2023-11-21 20:58:51,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 954 states, 436 states have (on average 2.30045871559633) internal successors, (1003), 947 states have internal predecessors, (1003), 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) [2023-11-21 20:58:51,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1021 transitions. [2023-11-21 20:58:51,538 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1021 transitions. Word has length 5 [2023-11-21 20:58:51,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:58:51,538 INFO L495 AbstractCegarLoop]: Abstraction has 954 states and 1021 transitions. [2023-11-21 20:58:51,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:58:51,539 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1021 transitions. [2023-11-21 20:58:51,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-21 20:58:51,539 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:58:51,540 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-21 20:58:51,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-21 20:58:51,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:58:51,743 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-21 20:58:51,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:58:51,743 INFO L85 PathProgramCache]: Analyzing trace with hash -557734581, now seen corresponding path program 1 times [2023-11-21 20:58:51,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 20:58:51,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [575824261] [2023-11-21 20:58:51,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:58:51,745 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 [2023-11-21 20:58:51,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 20:58:51,746 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 20:58:51,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 20:58:51,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:51,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 20:58:51,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:58:51,898 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 [2023-11-21 20:58:51,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:58:51,909 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:58:51,910 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 20:58:51,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [575824261] [2023-11-21 20:58:51,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [575824261] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:58:51,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:58:51,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 20:58:51,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104554696] [2023-11-21 20:58:51,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:58:51,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 20:58:51,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 20:58:51,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 20:58:51,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:58:51,913 INFO L87 Difference]: Start difference. First operand 954 states and 1021 transitions. Second operand has 3 states, 2 states have (on average 3.0) 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) [2023-11-21 20:58:54,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:58:54,130 INFO L93 Difference]: Finished difference Result 1106 states and 1205 transitions. [2023-11-21 20:58:54,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 20:58:54,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) 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 [2023-11-21 20:58:54,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:58:54,139 INFO L225 Difference]: With dead ends: 1106 [2023-11-21 20:58:54,140 INFO L226 Difference]: Without dead ends: 1106 [2023-11-21 20:58:54,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:58:54,141 INFO L413 NwaCegarLoop]: 729 mSDtfsCounter, 729 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-21 20:58:54,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 967 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-21 20:58:54,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2023-11-21 20:58:54,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 907. [2023-11-21 20:58:54,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 436 states have (on average 2.1926605504587156) internal successors, (956), 900 states have internal predecessors, (956), 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) [2023-11-21 20:58:54,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 974 transitions. [2023-11-21 20:58:54,170 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 974 transitions. Word has length 6 [2023-11-21 20:58:54,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:58:54,171 INFO L495 AbstractCegarLoop]: Abstraction has 907 states and 974 transitions. [2023-11-21 20:58:54,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) 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) [2023-11-21 20:58:54,171 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 974 transitions. [2023-11-21 20:58:54,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-21 20:58:54,172 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:58:54,172 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-21 20:58:54,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 20:58:54,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:58:54,374 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-21 20:58:54,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:58:54,375 INFO L85 PathProgramCache]: Analyzing trace with hash -557734580, now seen corresponding path program 1 times [2023-11-21 20:58:54,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 20:58:54,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [820831446] [2023-11-21 20:58:54,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:58:54,376 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 [2023-11-21 20:58:54,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 20:58:54,377 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 20:58:54,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 20:58:54,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:54,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 20:58:54,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:58:54,534 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 [2023-11-21 20:58:54,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:58:54,559 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:58:54,559 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 20:58:54,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [820831446] [2023-11-21 20:58:54,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [820831446] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:58:54,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:58:54,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 20:58:54,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023559049] [2023-11-21 20:58:54,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:58:54,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 20:58:54,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 20:58:54,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 20:58:54,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:58:54,562 INFO L87 Difference]: Start difference. First operand 907 states and 974 transitions. Second operand has 3 states, 2 states have (on average 3.0) 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) [2023-11-21 20:58:57,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:58:57,800 INFO L93 Difference]: Finished difference Result 1164 states and 1266 transitions. [2023-11-21 20:58:57,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 20:58:57,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) 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 [2023-11-21 20:58:57,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:58:57,809 INFO L225 Difference]: With dead ends: 1164 [2023-11-21 20:58:57,809 INFO L226 Difference]: Without dead ends: 1164 [2023-11-21 20:58:57,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:58:57,810 INFO L413 NwaCegarLoop]: 889 mSDtfsCounter, 448 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 1249 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-21 20:58:57,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 1249 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-21 20:58:57,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2023-11-21 20:58:57,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 920. [2023-11-21 20:58:57,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 920 states, 459 states have (on average 2.185185185185185) internal successors, (1003), 913 states have internal predecessors, (1003), 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) [2023-11-21 20:58:57,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 1021 transitions. [2023-11-21 20:58:57,838 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 1021 transitions. Word has length 6 [2023-11-21 20:58:57,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:58:57,838 INFO L495 AbstractCegarLoop]: Abstraction has 920 states and 1021 transitions. [2023-11-21 20:58:57,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) 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) [2023-11-21 20:58:57,839 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 1021 transitions. [2023-11-21 20:58:57,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-21 20:58:57,839 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:58:57,840 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:58:57,843 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-21 20:58:58,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:58:58,044 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr428REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-21 20:58:58,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:58:58,044 INFO L85 PathProgramCache]: Analyzing trace with hash -864044681, now seen corresponding path program 1 times [2023-11-21 20:58:58,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 20:58:58,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1405910645] [2023-11-21 20:58:58,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:58:58,045 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 [2023-11-21 20:58:58,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 20:58:58,047 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 20:58:58,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 20:58:58,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:58,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 20:58:58,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:58:58,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:58:58,286 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:58:58,286 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 20:58:58,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1405910645] [2023-11-21 20:58:58,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1405910645] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:58:58,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:58:58,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 20:58:58,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420852892] [2023-11-21 20:58:58,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:58:58,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 20:58:58,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 20:58:58,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 20:58:58,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:58:58,289 INFO L87 Difference]: Start difference. First operand 920 states and 1021 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:58:59,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:58:59,756 INFO L93 Difference]: Finished difference Result 1347 states and 1494 transitions. [2023-11-21 20:58:59,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 20:58:59,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-21 20:58:59,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:58:59,764 INFO L225 Difference]: With dead ends: 1347 [2023-11-21 20:58:59,765 INFO L226 Difference]: Without dead ends: 1347 [2023-11-21 20:58:59,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:58:59,766 INFO L413 NwaCegarLoop]: 891 mSDtfsCounter, 512 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 1601 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-21 20:58:59,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 1601 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-21 20:58:59,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1347 states. [2023-11-21 20:58:59,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1347 to 1071. [2023-11-21 20:58:59,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 605 states have (on average 2.1107438016528928) internal successors, (1277), 1064 states have internal predecessors, (1277), 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) [2023-11-21 20:58:59,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1305 transitions. [2023-11-21 20:58:59,799 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1305 transitions. Word has length 10 [2023-11-21 20:58:59,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:58:59,800 INFO L495 AbstractCegarLoop]: Abstraction has 1071 states and 1305 transitions. [2023-11-21 20:58:59,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:58:59,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1305 transitions. [2023-11-21 20:58:59,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-21 20:58:59,801 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:58:59,801 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:58:59,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-21 20:59:00,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:00,005 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr533ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-21 20:59:00,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:00,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1418006396, now seen corresponding path program 1 times [2023-11-21 20:59:00,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 20:59:00,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1409536286] [2023-11-21 20:59:00,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:00,006 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 [2023-11-21 20:59:00,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 20:59:00,007 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 20:59:00,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 20:59:00,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:00,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 20:59:00,215 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:59:00,224 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-21 20:59:00,225 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-21 20:59:00,226 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-21 20:59:00,235 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 [2023-11-21 20:59:00,301 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 20:59:00,302 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 [2023-11-21 20:59:00,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:00,323 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:59:00,324 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 20:59:00,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1409536286] [2023-11-21 20:59:00,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1409536286] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:00,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:00,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 20:59:00,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25875222] [2023-11-21 20:59:00,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:00,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 20:59:00,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 20:59:00,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 20:59:00,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 20:59:00,326 INFO L87 Difference]: Start difference. First operand 1071 states and 1305 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2023-11-21 20:59:02,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:02,537 INFO L93 Difference]: Finished difference Result 1419 states and 1706 transitions. [2023-11-21 20:59:02,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 20:59:02,544 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2023-11-21 20:59:02,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:02,552 INFO L225 Difference]: With dead ends: 1419 [2023-11-21 20:59:02,552 INFO L226 Difference]: Without dead ends: 1419 [2023-11-21 20:59:02,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 20:59:02,553 INFO L413 NwaCegarLoop]: 827 mSDtfsCounter, 355 mSDsluCounter, 1602 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 2429 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:02,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 2429 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-21 20:59:02,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2023-11-21 20:59:02,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 1070. [2023-11-21 20:59:02,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 604 states have (on average 2.1109271523178808) internal successors, (1275), 1063 states have internal predecessors, (1275), 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) [2023-11-21 20:59:02,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1303 transitions. [2023-11-21 20:59:02,598 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1303 transitions. Word has length 12 [2023-11-21 20:59:02,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:02,598 INFO L495 AbstractCegarLoop]: Abstraction has 1070 states and 1303 transitions. [2023-11-21 20:59:02,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2023-11-21 20:59:02,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1303 transitions. [2023-11-21 20:59:02,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-21 20:59:02,599 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:02,599 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:02,615 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-11-21 20:59:02,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:02,804 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-21 20:59:02,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:02,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1956189507, now seen corresponding path program 1 times [2023-11-21 20:59:02,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 20:59:02,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2132627039] [2023-11-21 20:59:02,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:02,807 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 [2023-11-21 20:59:02,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 20:59:02,808 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 20:59:02,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 20:59:03,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:03,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 20:59:03,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:59:03,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:03,030 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:59:03,030 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 20:59:03,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2132627039] [2023-11-21 20:59:03,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2132627039] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:03,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:03,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 20:59:03,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127491422] [2023-11-21 20:59:03,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:03,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 20:59:03,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 20:59:03,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 20:59:03,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:59:03,032 INFO L87 Difference]: Start difference. First operand 1070 states and 1303 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-11-21 20:59:04,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:04,074 INFO L93 Difference]: Finished difference Result 1016 states and 1223 transitions. [2023-11-21 20:59:04,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 20:59:04,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 14 [2023-11-21 20:59:04,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:04,080 INFO L225 Difference]: With dead ends: 1016 [2023-11-21 20:59:04,081 INFO L226 Difference]: Without dead ends: 1016 [2023-11-21 20:59:04,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:59:04,082 INFO L413 NwaCegarLoop]: 796 mSDtfsCounter, 69 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1543 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:04,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 1543 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-21 20:59:04,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2023-11-21 20:59:04,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 1016. [2023-11-21 20:59:04,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1016 states, 574 states have (on average 2.081881533101045) internal successors, (1195), 1009 states have internal predecessors, (1195), 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) [2023-11-21 20:59:04,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1223 transitions. [2023-11-21 20:59:04,107 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1223 transitions. Word has length 14 [2023-11-21 20:59:04,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:04,107 INFO L495 AbstractCegarLoop]: Abstraction has 1016 states and 1223 transitions. [2023-11-21 20:59:04,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-11-21 20:59:04,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1223 transitions. [2023-11-21 20:59:04,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-21 20:59:04,109 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:04,109 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:04,122 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 20:59:04,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:04,313 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-21 20:59:04,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:04,313 INFO L85 PathProgramCache]: Analyzing trace with hash 514051754, now seen corresponding path program 1 times [2023-11-21 20:59:04,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 20:59:04,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [647184143] [2023-11-21 20:59:04,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:04,314 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:04,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 20:59:04,315 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 20:59:04,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 20:59:04,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:04,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 20:59:04,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:59:04,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:04,559 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:59:04,559 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 20:59:04,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [647184143] [2023-11-21 20:59:04,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [647184143] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:04,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:04,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 20:59:04,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634970233] [2023-11-21 20:59:04,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:04,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 20:59:04,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 20:59:04,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 20:59:04,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 20:59:04,564 INFO L87 Difference]: Start difference. First operand 1016 states and 1223 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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) [2023-11-21 20:59:05,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:05,798 INFO L93 Difference]: Finished difference Result 1002 states and 1181 transitions. [2023-11-21 20:59:05,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 20:59:05,800 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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 [2023-11-21 20:59:05,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:05,804 INFO L225 Difference]: With dead ends: 1002 [2023-11-21 20:59:05,804 INFO L226 Difference]: Without dead ends: 1002 [2023-11-21 20:59:05,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 20:59:05,805 INFO L413 NwaCegarLoop]: 765 mSDtfsCounter, 58 mSDsluCounter, 1506 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 2271 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:05,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 2271 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-21 20:59:05,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2023-11-21 20:59:05,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 1000. [2023-11-21 20:59:05,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1000 states, 572 states have (on average 2.012237762237762) internal successors, (1151), 993 states have internal predecessors, (1151), 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) [2023-11-21 20:59:05,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1179 transitions. [2023-11-21 20:59:05,831 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1179 transitions. Word has length 15 [2023-11-21 20:59:05,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:05,831 INFO L495 AbstractCegarLoop]: Abstraction has 1000 states and 1179 transitions. [2023-11-21 20:59:05,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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) [2023-11-21 20:59:05,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1179 transitions. [2023-11-21 20:59:05,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-21 20:59:05,833 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:05,833 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] [2023-11-21 20:59:05,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 20:59:06,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:06,037 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-21 20:59:06,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:06,037 INFO L85 PathProgramCache]: Analyzing trace with hash -170410632, now seen corresponding path program 1 times [2023-11-21 20:59:06,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 20:59:06,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1589028659] [2023-11-21 20:59:06,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:06,038 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 [2023-11-21 20:59:06,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 20:59:06,039 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 20:59:06,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 20:59:06,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:06,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 20:59:06,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:59:06,265 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 [2023-11-21 20:59:06,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:06,383 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:59:06,383 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 20:59:06,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1589028659] [2023-11-21 20:59:06,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1589028659] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:06,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:06,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 20:59:06,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911399013] [2023-11-21 20:59:06,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:06,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 20:59:06,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 20:59:06,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 20:59:06,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 20:59:06,389 INFO L87 Difference]: Start difference. First operand 1000 states and 1179 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 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) [2023-11-21 20:59:09,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:09,335 INFO L93 Difference]: Finished difference Result 1276 states and 1557 transitions. [2023-11-21 20:59:09,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 20:59:09,336 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 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 29 [2023-11-21 20:59:09,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:09,342 INFO L225 Difference]: With dead ends: 1276 [2023-11-21 20:59:09,342 INFO L226 Difference]: Without dead ends: 1276 [2023-11-21 20:59:09,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 20:59:09,343 INFO L413 NwaCegarLoop]: 495 mSDtfsCounter, 662 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 1101 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 1086 SdHoareTripleChecker+Invalid, 1109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:09,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [670 Valid, 1086 Invalid, 1109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1101 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-21 20:59:09,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2023-11-21 20:59:09,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 996. [2023-11-21 20:59:09,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 572 states have (on average 1.9982517482517483) internal successors, (1143), 989 states have internal predecessors, (1143), 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) [2023-11-21 20:59:09,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1171 transitions. [2023-11-21 20:59:09,371 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1171 transitions. Word has length 29 [2023-11-21 20:59:09,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:09,372 INFO L495 AbstractCegarLoop]: Abstraction has 996 states and 1171 transitions. [2023-11-21 20:59:09,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 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) [2023-11-21 20:59:09,372 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1171 transitions. [2023-11-21 20:59:09,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-21 20:59:09,373 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:09,373 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] [2023-11-21 20:59:09,381 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat -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)] Ended with exit code 0 [2023-11-21 20:59:09,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:09,577 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-21 20:59:09,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:09,577 INFO L85 PathProgramCache]: Analyzing trace with hash -170410631, now seen corresponding path program 1 times [2023-11-21 20:59:09,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 20:59:09,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1287842684] [2023-11-21 20:59:09,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:09,578 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 [2023-11-21 20:59:09,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 20:59:09,579 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 20:59:09,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 20:59:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:09,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 20:59:09,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:59:09,804 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 [2023-11-21 20:59:10,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:10,063 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:59:10,064 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 20:59:10,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1287842684] [2023-11-21 20:59:10,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1287842684] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:10,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:10,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 20:59:10,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890105127] [2023-11-21 20:59:10,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:10,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 20:59:10,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 20:59:10,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 20:59:10,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 20:59:10,065 INFO L87 Difference]: Start difference. First operand 996 states and 1171 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 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) [2023-11-21 20:59:14,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:14,441 INFO L93 Difference]: Finished difference Result 1317 states and 1563 transitions. [2023-11-21 20:59:14,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 20:59:14,442 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 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 29 [2023-11-21 20:59:14,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:14,447 INFO L225 Difference]: With dead ends: 1317 [2023-11-21 20:59:14,447 INFO L226 Difference]: Without dead ends: 1317 [2023-11-21 20:59:14,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 20:59:14,448 INFO L413 NwaCegarLoop]: 916 mSDtfsCounter, 383 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 1310 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 1820 SdHoareTripleChecker+Invalid, 1313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:14,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 1820 Invalid, 1313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1310 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-11-21 20:59:14,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2023-11-21 20:59:14,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 992. [2023-11-21 20:59:14,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 992 states, 572 states have (on average 1.9842657342657342) internal successors, (1135), 985 states have internal predecessors, (1135), 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) [2023-11-21 20:59:14,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 1163 transitions. [2023-11-21 20:59:14,473 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 1163 transitions. Word has length 29 [2023-11-21 20:59:14,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:14,474 INFO L495 AbstractCegarLoop]: Abstraction has 992 states and 1163 transitions. [2023-11-21 20:59:14,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 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) [2023-11-21 20:59:14,474 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 1163 transitions. [2023-11-21 20:59:14,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-21 20:59:14,478 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:14,479 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] [2023-11-21 20:59:14,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 20:59:14,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:14,683 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-21 20:59:14,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:14,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1802927874, now seen corresponding path program 1 times [2023-11-21 20:59:14,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 20:59:14,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1870730214] [2023-11-21 20:59:14,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:14,684 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 [2023-11-21 20:59:14,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 20:59:14,685 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 20:59:14,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 20:59:14,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:14,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 20:59:14,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:59:15,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:15,004 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:59:15,004 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 20:59:15,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1870730214] [2023-11-21 20:59:15,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1870730214] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:15,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:15,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 20:59:15,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062757201] [2023-11-21 20:59:15,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:15,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 20:59:15,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 20:59:15,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 20:59:15,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 20:59:15,007 INFO L87 Difference]: Start difference. First operand 992 states and 1163 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2023-11-21 20:59:16,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:16,287 INFO L93 Difference]: Finished difference Result 980 states and 1143 transitions. [2023-11-21 20:59:16,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 20:59:16,292 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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 48 [2023-11-21 20:59:16,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:16,299 INFO L225 Difference]: With dead ends: 980 [2023-11-21 20:59:16,299 INFO L226 Difference]: Without dead ends: 980 [2023-11-21 20:59:16,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 20:59:16,301 INFO L413 NwaCegarLoop]: 759 mSDtfsCounter, 23 mSDsluCounter, 1498 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2257 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:16,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2257 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-21 20:59:16,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2023-11-21 20:59:16,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 980. [2023-11-21 20:59:16,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 980 states, 560 states have (on average 1.9910714285714286) internal successors, (1115), 973 states have internal predecessors, (1115), 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) [2023-11-21 20:59:16,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1143 transitions. [2023-11-21 20:59:16,323 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1143 transitions. Word has length 48 [2023-11-21 20:59:16,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:16,324 INFO L495 AbstractCegarLoop]: Abstraction has 980 states and 1143 transitions. [2023-11-21 20:59:16,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2023-11-21 20:59:16,324 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1143 transitions. [2023-11-21 20:59:16,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-21 20:59:16,325 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:16,325 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] [2023-11-21 20:59:16,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 20:59:16,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:16,531 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-21 20:59:16,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:16,531 INFO L85 PathProgramCache]: Analyzing trace with hash 659605309, now seen corresponding path program 1 times [2023-11-21 20:59:16,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 20:59:16,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [296654649] [2023-11-21 20:59:16,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:16,533 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 [2023-11-21 20:59:16,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 20:59:16,534 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 20:59:16,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a184eb8d-0d46-42f1-81c3-989b473757e1/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 20:59:16,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:16,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 20:59:16,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:59:16,938 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 [2023-11-21 20:59:16,945 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 [2023-11-21 20:59:17,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:17,635 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 [2023-11-21 20:59:17,654 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-21 20:59:17,654 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 [2023-11-21 20:59:17,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:17,673 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:59:17,673 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 20:59:17,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [296654649] [2023-11-21 20:59:17,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [296654649] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:17,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:17,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 20:59:17,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719538578] [2023-11-21 20:59:17,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:17,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 20:59:17,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 20:59:17,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 20:59:17,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 20:59:17,676 INFO L87 Difference]: Start difference. First operand 980 states and 1143 transitions. Second operand has 4 states, 3 states have (on average 17.333333333333332) internal successors, (52), 4 states have internal predecessors, (52), 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)