./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b 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_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 4a058bd9944921e52018f99044f11f694f824f3f09daf510330544b4558ba193 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:53:26,179 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:53:26,274 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 21:53:26,282 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:53:26,283 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:53:26,341 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:53:26,343 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:53:26,344 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:53:26,345 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:53:26,350 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:53:26,351 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:53:26,352 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:53:26,352 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:53:26,354 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:53:26,355 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:53:26,356 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:53:26,356 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:53:26,357 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:53:26,357 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 21:53:26,358 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 21:53:26,359 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 21:53:26,359 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:53:26,360 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 21:53:26,360 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:53:26,361 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:53:26,361 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:53:26,362 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:53:26,363 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:53:26,364 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:53:26,364 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:53:26,366 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:53:26,366 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:53:26,366 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:53:26,367 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:53:26,367 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:53:26,367 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:53:26,368 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:53:26,368 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:53:26,368 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_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a058bd9944921e52018f99044f11f694f824f3f09daf510330544b4558ba193 [2023-11-06 21:53:26,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:53:26,721 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:53:26,724 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:53:26,725 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:53:26,726 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:53:26,727 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i [2023-11-06 21:53:29,920 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:53:30,322 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:53:30,323 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i [2023-11-06 21:53:30,354 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/data/613ba4125/f2f3a33d3ac04d15a329ae11e378bf76/FLAG593143ef2 [2023-11-06 21:53:30,368 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/data/613ba4125/f2f3a33d3ac04d15a329ae11e378bf76 [2023-11-06 21:53:30,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:53:30,373 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:53:30,375 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:53:30,375 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:53:30,381 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:53:30,381 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:53:30" (1/1) ... [2023-11-06 21:53:30,382 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fa05300 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:30, skipping insertion in model container [2023-11-06 21:53:30,383 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:53:30" (1/1) ... [2023-11-06 21:53:30,459 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:53:31,277 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:53:31,300 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) [2023-11-06 21:53:31,300 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5ae4ea09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:31, skipping insertion in model container [2023-11-06 21:53:31,301 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:53:31,301 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-06 21:53:31,303 INFO L158 Benchmark]: Toolchain (without parser) took 929.27ms. Allocated memory is still 163.6MB. Free memory was 128.9MB in the beginning and 106.3MB in the end (delta: 22.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-06 21:53:31,304 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 130.0MB. Free memory was 103.3MB in the beginning and 103.2MB in the end (delta: 74.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:53:31,305 INFO L158 Benchmark]: CACSL2BoogieTranslator took 926.33ms. Allocated memory is still 163.6MB. Free memory was 128.6MB in the beginning and 106.6MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-06 21:53:31,306 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 130.0MB. Free memory was 103.3MB in the beginning and 103.2MB in the end (delta: 74.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 926.33ms. Allocated memory is still 163.6MB. Free memory was 128.6MB in the beginning and 106.6MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 990]: 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_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 4a058bd9944921e52018f99044f11f694f824f3f09daf510330544b4558ba193 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:53:33,789 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:53:33,920 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-06 21:53:33,929 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:53:33,930 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:53:33,982 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:53:33,983 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:53:33,984 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:53:33,985 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:53:33,990 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:53:33,991 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:53:33,991 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:53:33,992 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:53:33,994 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:53:33,994 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:53:33,995 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:53:33,995 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:53:33,996 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:53:33,996 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 21:53:33,997 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 21:53:33,997 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 21:53:33,998 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:53:33,999 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 21:53:33,999 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 21:53:34,000 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 21:53:34,001 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:53:34,001 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:53:34,002 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:53:34,003 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:53:34,003 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:53:34,005 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:53:34,005 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:53:34,005 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:53:34,006 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:53:34,006 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-06 21:53:34,006 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 21:53:34,007 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:53:34,007 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:53:34,007 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:53:34,008 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-06 21:53:34,009 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:53:34,009 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_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a058bd9944921e52018f99044f11f694f824f3f09daf510330544b4558ba193 [2023-11-06 21:53:34,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:53:34,491 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:53:34,494 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:53:34,496 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:53:34,496 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:53:34,498 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i [2023-11-06 21:53:37,852 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:53:38,315 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:53:38,321 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i [2023-11-06 21:53:38,356 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/data/c0931e94f/f6b78bd3c6c7443883f8cf0414ce7ae8/FLAG6509205a7 [2023-11-06 21:53:38,374 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/data/c0931e94f/f6b78bd3c6c7443883f8cf0414ce7ae8 [2023-11-06 21:53:38,380 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:53:38,382 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:53:38,387 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:53:38,387 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:53:38,393 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:53:38,394 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:53:38" (1/1) ... [2023-11-06 21:53:38,395 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25e85c95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:38, skipping insertion in model container [2023-11-06 21:53:38,395 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:53:38" (1/1) ... [2023-11-06 21:53:38,488 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:53:39,649 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:53:39,681 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-06 21:53:39,700 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:53:39,829 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:53:39,836 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:53:39,913 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:53:40,025 WARN L672 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:53:40,033 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:53:40,034 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:40 WrapperNode [2023-11-06 21:53:40,034 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:53:40,036 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:53:40,036 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:53:40,036 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:53:40,044 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:40" (1/1) ... [2023-11-06 21:53:40,105 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:40" (1/1) ... [2023-11-06 21:53:40,191 INFO L138 Inliner]: procedures = 285, calls = 351, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1213 [2023-11-06 21:53:40,192 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:53:40,193 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:53:40,193 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:53:40,193 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:53:40,204 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:40" (1/1) ... [2023-11-06 21:53:40,204 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:40" (1/1) ... [2023-11-06 21:53:40,217 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:40" (1/1) ... [2023-11-06 21:53:40,218 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:40" (1/1) ... [2023-11-06 21:53:40,296 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:40" (1/1) ... [2023-11-06 21:53:40,321 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:40" (1/1) ... [2023-11-06 21:53:40,338 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:40" (1/1) ... [2023-11-06 21:53:40,345 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:40" (1/1) ... [2023-11-06 21:53:40,366 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:53:40,367 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:53:40,368 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:53:40,369 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:53:40,370 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:40" (1/1) ... [2023-11-06 21:53:40,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:53:40,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:53:40,409 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:53:40,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:53:40,469 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-06 21:53:40,469 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-06 21:53:40,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-06 21:53:40,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-06 21:53:40,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:53:40,470 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-06 21:53:40,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 21:53:40,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:53:40,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-06 21:53:40,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 21:53:40,473 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2023-11-06 21:53:40,474 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2023-11-06 21:53:40,474 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-06 21:53:40,474 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-06 21:53:40,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 21:53:40,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:53:40,475 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2023-11-06 21:53:40,475 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2023-11-06 21:53:40,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 21:53:40,476 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2023-11-06 21:53:40,476 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2023-11-06 21:53:40,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:53:40,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:53:40,817 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:53:40,819 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:53:47,295 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:53:47,319 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:53:47,320 INFO L302 CfgBuilder]: Removed 72 assume(true) statements. [2023-11-06 21:53:47,324 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:53:47 BoogieIcfgContainer [2023-11-06 21:53:47,324 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:53:47,328 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:53:47,328 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:53:47,332 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:53:47,332 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:53:38" (1/3) ... [2023-11-06 21:53:47,333 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45bc9d1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:53:47, skipping insertion in model container [2023-11-06 21:53:47,333 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:40" (2/3) ... [2023-11-06 21:53:47,335 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45bc9d1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:53:47, skipping insertion in model container [2023-11-06 21:53:47,336 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:53:47" (3/3) ... [2023-11-06 21:53:47,337 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test6-2.i [2023-11-06 21:53:47,360 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:53:47,360 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 631 error locations. [2023-11-06 21:53:47,461 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:53:47,469 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;@4566517f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:53:47,469 INFO L358 AbstractCegarLoop]: Starting to check reachability of 631 error locations. [2023-11-06 21:53:47,482 INFO L276 IsEmpty]: Start isEmpty. Operand has 1291 states, 635 states have (on average 2.222047244094488) internal successors, (1411), 1269 states have internal predecessors, (1411), 20 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-06 21:53:47,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-06 21:53:47,489 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:53:47,490 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-06 21:53:47,491 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-11-06 21:53:47,501 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:53:47,501 INFO L85 PathProgramCache]: Analyzing trace with hash 85465, now seen corresponding path program 1 times [2023-11-06 21:53:47,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:53:47,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [409312783] [2023-11-06 21:53:47,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:47,517 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 [2023-11-06 21:53:47,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:53:47,523 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 21:53:47,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 21:53:47,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:47,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 21:53:47,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:53:47,784 INFO L351 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 [2023-11-06 21:53:47,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:53:47,801 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:53:47,802 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:53:47,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [409312783] [2023-11-06 21:53:47,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [409312783] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:53:47,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:53:47,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:53:47,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536621529] [2023-11-06 21:53:47,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:53:47,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:53:47,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:53:47,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:53:47,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:53:47,844 INFO L87 Difference]: Start difference. First operand has 1291 states, 635 states have (on average 2.222047244094488) internal successors, (1411), 1269 states have internal predecessors, (1411), 20 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:53:51,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:53:51,075 INFO L93 Difference]: Finished difference Result 1552 states and 1644 transitions. [2023-11-06 21:53:51,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:53:51,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-06 21:53:51,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:53:51,102 INFO L225 Difference]: With dead ends: 1552 [2023-11-06 21:53:51,102 INFO L226 Difference]: Without dead ends: 1550 [2023-11-06 21:53:51,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:53:51,108 INFO L413 NwaCegarLoop]: 921 mSDtfsCounter, 915 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:53:51,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 1273 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-06 21:53:51,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1550 states. [2023-11-06 21:53:51,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1550 to 1312. [2023-11-06 21:53:51,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1312 states, 671 states have (on average 2.0864381520119224) internal successors, (1400), 1292 states have internal predecessors, (1400), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-06 21:53:51,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 1434 transitions. [2023-11-06 21:53:51,272 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 1434 transitions. Word has length 3 [2023-11-06 21:53:51,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:53:51,272 INFO L495 AbstractCegarLoop]: Abstraction has 1312 states and 1434 transitions. [2023-11-06 21:53:51,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:53:51,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 1434 transitions. [2023-11-06 21:53:51,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-06 21:53:51,274 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:53:51,274 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-06 21:53:51,289 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-11-06 21:53:51,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 21:53:51,483 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-11-06 21:53:51,483 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:53:51,484 INFO L85 PathProgramCache]: Analyzing trace with hash 85466, now seen corresponding path program 1 times [2023-11-06 21:53:51,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:53:51,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [762450737] [2023-11-06 21:53:51,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:51,485 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 [2023-11-06 21:53:51,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:53:51,486 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 21:53:51,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 21:53:51,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:51,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 21:53:51,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:53:51,656 INFO L351 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 [2023-11-06 21:53:51,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:53:51,669 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:53:51,670 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:53:51,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [762450737] [2023-11-06 21:53:51,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [762450737] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:53:51,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:53:51,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:53:51,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833518918] [2023-11-06 21:53:51,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:53:51,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:53:51,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:53:51,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:53:51,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:53:51,674 INFO L87 Difference]: Start difference. First operand 1312 states and 1434 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:53:56,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:53:56,432 INFO L93 Difference]: Finished difference Result 1908 states and 2079 transitions. [2023-11-06 21:53:56,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:53:56,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-06 21:53:56,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:53:56,444 INFO L225 Difference]: With dead ends: 1908 [2023-11-06 21:53:56,444 INFO L226 Difference]: Without dead ends: 1908 [2023-11-06 21:53:56,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:53:56,446 INFO L413 NwaCegarLoop]: 1059 mSDtfsCounter, 629 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 1771 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-06 21:53:56,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [636 Valid, 1771 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-11-06 21:53:56,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2023-11-06 21:53:56,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 1521. [2023-11-06 21:53:56,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1521 states, 879 states have (on average 2.0671217292377704) internal successors, (1817), 1499 states have internal predecessors, (1817), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-06 21:53:56,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 1855 transitions. [2023-11-06 21:53:56,498 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 1855 transitions. Word has length 3 [2023-11-06 21:53:56,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:53:56,498 INFO L495 AbstractCegarLoop]: Abstraction has 1521 states and 1855 transitions. [2023-11-06 21:53:56,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:53:56,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 1855 transitions. [2023-11-06 21:53:56,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-06 21:53:56,499 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:53:56,500 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:53:56,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 21:53:56,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 21:53:56,717 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-11-06 21:53:56,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:53:56,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1307350193, now seen corresponding path program 1 times [2023-11-06 21:53:56,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:53:56,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1107293954] [2023-11-06 21:53:56,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:56,719 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 [2023-11-06 21:53:56,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:53:56,723 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 21:53:56,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 21:53:56,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:56,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 21:53:56,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:53:56,957 INFO L351 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 [2023-11-06 21:53:56,964 INFO L351 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 [2023-11-06 21:53:57,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:53:57,092 INFO L351 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 [2023-11-06 21:53:57,117 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-06 21:53:57,117 INFO L351 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 [2023-11-06 21:53:57,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:53:57,154 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:53:57,155 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:53:57,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1107293954] [2023-11-06 21:53:57,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1107293954] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:53:57,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:53:57,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:53:57,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312837820] [2023-11-06 21:53:57,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:53:57,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:53:57,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:53:57,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:53:57,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:53:57,159 INFO L87 Difference]: Start difference. First operand 1521 states and 1855 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:05,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:05,105 INFO L93 Difference]: Finished difference Result 2599 states and 3013 transitions. [2023-11-06 21:54:05,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:54:05,106 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-06 21:54:05,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:05,120 INFO L225 Difference]: With dead ends: 2599 [2023-11-06 21:54:05,120 INFO L226 Difference]: Without dead ends: 2599 [2023-11-06 21:54:05,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:54:05,122 INFO L413 NwaCegarLoop]: 720 mSDtfsCounter, 1121 mSDsluCounter, 1106 mSDsCounter, 0 mSdLazyCounter, 2210 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1127 SdHoareTripleChecker+Valid, 1826 SdHoareTripleChecker+Invalid, 2223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:05,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1127 Valid, 1826 Invalid, 2223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2210 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2023-11-06 21:54:05,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2599 states. [2023-11-06 21:54:05,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2599 to 1670. [2023-11-06 21:54:05,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1670 states, 1028 states have (on average 2.046692607003891) internal successors, (2104), 1648 states have internal predecessors, (2104), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-06 21:54:05,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1670 states to 1670 states and 2142 transitions. [2023-11-06 21:54:05,176 INFO L78 Accepts]: Start accepts. Automaton has 1670 states and 2142 transitions. Word has length 8 [2023-11-06 21:54:05,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:05,177 INFO L495 AbstractCegarLoop]: Abstraction has 1670 states and 2142 transitions. [2023-11-06 21:54:05,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:05,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1670 states and 2142 transitions. [2023-11-06 21:54:05,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-06 21:54:05,178 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:05,178 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:05,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 21:54:05,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 21:54:05,391 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-11-06 21:54:05,396 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:05,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1873150296, now seen corresponding path program 1 times [2023-11-06 21:54:05,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:54:05,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1113134275] [2023-11-06 21:54:05,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:05,397 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 [2023-11-06 21:54:05,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:54:05,399 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 21:54:05,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 21:54:05,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:05,577 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 21:54:05,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:54:05,591 INFO L351 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 [2023-11-06 21:54:05,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:05,623 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:54:05,624 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:54:05,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1113134275] [2023-11-06 21:54:05,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1113134275] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:05,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:05,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:54:05,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693450403] [2023-11-06 21:54:05,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:05,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:54:05,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:54:05,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:54:05,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:54:05,628 INFO L87 Difference]: Start difference. First operand 1670 states and 2142 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:10,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:10,452 INFO L93 Difference]: Finished difference Result 2849 states and 3555 transitions. [2023-11-06 21:54:10,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:54:10,454 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-06 21:54:10,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:10,468 INFO L225 Difference]: With dead ends: 2849 [2023-11-06 21:54:10,468 INFO L226 Difference]: Without dead ends: 2849 [2023-11-06 21:54:10,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:54:10,469 INFO L413 NwaCegarLoop]: 1337 mSDtfsCounter, 2355 mSDsluCounter, 1283 mSDsCounter, 0 mSdLazyCounter, 1786 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2361 SdHoareTripleChecker+Valid, 2620 SdHoareTripleChecker+Invalid, 1843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:10,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2361 Valid, 2620 Invalid, 1843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1786 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-11-06 21:54:10,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2849 states. [2023-11-06 21:54:10,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2849 to 1625. [2023-11-06 21:54:10,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1625 states, 1028 states have (on average 1.9892996108949417) internal successors, (2045), 1603 states have internal predecessors, (2045), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-06 21:54:10,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1625 states to 1625 states and 2083 transitions. [2023-11-06 21:54:10,523 INFO L78 Accepts]: Start accepts. Automaton has 1625 states and 2083 transitions. Word has length 9 [2023-11-06 21:54:10,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:10,523 INFO L495 AbstractCegarLoop]: Abstraction has 1625 states and 2083 transitions. [2023-11-06 21:54:10,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2023-11-06 21:54:10,524 INFO L276 IsEmpty]: Start isEmpty. Operand 1625 states and 2083 transitions. [2023-11-06 21:54:10,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-06 21:54:10,524 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:10,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:10,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 21:54:10,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 21:54:10,736 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-11-06 21:54:10,736 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:10,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1873150295, now seen corresponding path program 1 times [2023-11-06 21:54:10,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:54:10,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [333995333] [2023-11-06 21:54:10,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:10,737 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 [2023-11-06 21:54:10,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:54:10,739 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 21:54:10,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 21:54:10,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:10,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 21:54:10,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:54:10,936 INFO L351 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 [2023-11-06 21:54:10,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:10,985 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:54:10,990 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:54:10,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [333995333] [2023-11-06 21:54:10,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [333995333] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:10,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:10,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:54:10,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922773064] [2023-11-06 21:54:10,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:10,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:54:10,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:54:11,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:54:11,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:54:11,001 INFO L87 Difference]: Start difference. First operand 1625 states and 2083 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:16,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:16,669 INFO L93 Difference]: Finished difference Result 2471 states and 3140 transitions. [2023-11-06 21:54:16,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:54:16,676 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-06 21:54:16,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:16,690 INFO L225 Difference]: With dead ends: 2471 [2023-11-06 21:54:16,690 INFO L226 Difference]: Without dead ends: 2471 [2023-11-06 21:54:16,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:54:16,691 INFO L413 NwaCegarLoop]: 1531 mSDtfsCounter, 1598 mSDsluCounter, 1228 mSDsCounter, 0 mSdLazyCounter, 1630 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1603 SdHoareTripleChecker+Valid, 2759 SdHoareTripleChecker+Invalid, 1647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:16,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1603 Valid, 2759 Invalid, 1647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1630 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-11-06 21:54:16,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2471 states. [2023-11-06 21:54:16,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2471 to 1615. [2023-11-06 21:54:16,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1615 states, 1028 states have (on average 1.965953307392996) internal successors, (2021), 1593 states have internal predecessors, (2021), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-06 21:54:16,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 2059 transitions. [2023-11-06 21:54:16,741 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 2059 transitions. Word has length 9 [2023-11-06 21:54:16,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:16,741 INFO L495 AbstractCegarLoop]: Abstraction has 1615 states and 2059 transitions. [2023-11-06 21:54:16,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2023-11-06 21:54:16,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 2059 transitions. [2023-11-06 21:54:16,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-06 21:54:16,742 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:16,743 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:16,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-06 21:54:16,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 21:54:16,943 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-11-06 21:54:16,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:16,944 INFO L85 PathProgramCache]: Analyzing trace with hash 910828941, now seen corresponding path program 1 times [2023-11-06 21:54:16,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:54:16,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1479677734] [2023-11-06 21:54:16,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:16,945 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 [2023-11-06 21:54:16,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:54:16,946 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 21:54:16,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 21:54:17,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:17,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 21:54:17,152 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:54:17,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:17,235 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:54:17,235 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:54:17,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1479677734] [2023-11-06 21:54:17,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1479677734] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:17,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:17,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:54:17,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255115573] [2023-11-06 21:54:17,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:17,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:54:17,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:54:17,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:54:17,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:54:17,241 INFO L87 Difference]: Start difference. First operand 1615 states and 2059 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:18,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:18,381 INFO L93 Difference]: Finished difference Result 2291 states and 2839 transitions. [2023-11-06 21:54:18,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:54:18,382 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-06 21:54:18,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:18,395 INFO L225 Difference]: With dead ends: 2291 [2023-11-06 21:54:18,395 INFO L226 Difference]: Without dead ends: 2291 [2023-11-06 21:54:18,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:54:18,396 INFO L413 NwaCegarLoop]: 1458 mSDtfsCounter, 755 mSDsluCounter, 2436 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 3894 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:18,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [766 Valid, 3894 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-06 21:54:18,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2023-11-06 21:54:18,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 1878. [2023-11-06 21:54:18,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1878 states, 1288 states have (on average 1.970496894409938) internal successors, (2538), 1853 states have internal predecessors, (2538), 24 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-06 21:54:18,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 2582 transitions. [2023-11-06 21:54:18,449 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 2582 transitions. Word has length 13 [2023-11-06 21:54:18,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:18,450 INFO L495 AbstractCegarLoop]: Abstraction has 1878 states and 2582 transitions. [2023-11-06 21:54:18,450 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:18,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 2582 transitions. [2023-11-06 21:54:18,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-06 21:54:18,451 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:18,451 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:18,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 21:54:18,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 21:54:18,663 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr332REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-11-06 21:54:18,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:18,663 INFO L85 PathProgramCache]: Analyzing trace with hash 321620140, now seen corresponding path program 1 times [2023-11-06 21:54:18,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:54:18,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [590233190] [2023-11-06 21:54:18,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:18,664 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 [2023-11-06 21:54:18,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:54:18,665 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 21:54:18,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 21:54:18,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:18,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 21:54:18,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:54:18,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:18,848 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:54:18,848 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:54:18,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [590233190] [2023-11-06 21:54:18,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [590233190] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:18,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:18,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:54:18,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889218841] [2023-11-06 21:54:18,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:18,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:54:18,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:54:18,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:54:18,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:54:18,851 INFO L87 Difference]: Start difference. First operand 1878 states and 2582 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2023-11-06 21:54:18,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:18,920 INFO L93 Difference]: Finished difference Result 1782 states and 2410 transitions. [2023-11-06 21:54:18,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:54:18,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 13 [2023-11-06 21:54:18,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:18,933 INFO L225 Difference]: With dead ends: 1782 [2023-11-06 21:54:18,933 INFO L226 Difference]: Without dead ends: 1782 [2023-11-06 21:54:18,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:54:18,935 INFO L413 NwaCegarLoop]: 1236 mSDtfsCounter, 81 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 2400 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:18,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 2400 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:54:18,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1782 states. [2023-11-06 21:54:18,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1782 to 1782. [2023-11-06 21:54:18,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1782 states, 1216 states have (on average 1.9457236842105263) internal successors, (2366), 1757 states have internal predecessors, (2366), 24 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-06 21:54:18,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1782 states to 1782 states and 2410 transitions. [2023-11-06 21:54:18,982 INFO L78 Accepts]: Start accepts. Automaton has 1782 states and 2410 transitions. Word has length 13 [2023-11-06 21:54:18,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:18,982 INFO L495 AbstractCegarLoop]: Abstraction has 1782 states and 2410 transitions. [2023-11-06 21:54:18,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2023-11-06 21:54:18,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1782 states and 2410 transitions. [2023-11-06 21:54:18,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-06 21:54:18,984 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:18,985 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:19,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-06 21:54:19,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 21:54:19,198 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-11-06 21:54:19,199 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:19,199 INFO L85 PathProgramCache]: Analyzing trace with hash -917031865, now seen corresponding path program 1 times [2023-11-06 21:54:19,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:54:19,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1863974888] [2023-11-06 21:54:19,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:19,200 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 [2023-11-06 21:54:19,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:54:19,201 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 21:54:19,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 21:54:19,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:19,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 21:54:19,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:54:19,422 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:54:19,422 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:54:19,423 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:54:19,428 INFO L351 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 [2023-11-06 21:54:19,490 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:54:19,490 INFO L351 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 [2023-11-06 21:54:19,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:19,507 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:54:19,507 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:54:19,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1863974888] [2023-11-06 21:54:19,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1863974888] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:19,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:19,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:54:19,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683137041] [2023-11-06 21:54:19,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:19,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:54:19,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:54:19,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:54:19,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:54:19,510 INFO L87 Difference]: Start difference. First operand 1782 states and 2410 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:21,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:21,718 INFO L93 Difference]: Finished difference Result 1919 states and 2305 transitions. [2023-11-06 21:54:21,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:54:21,721 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-06 21:54:21,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:21,729 INFO L225 Difference]: With dead ends: 1919 [2023-11-06 21:54:21,729 INFO L226 Difference]: Without dead ends: 1919 [2023-11-06 21:54:21,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:54:21,729 INFO L413 NwaCegarLoop]: 1230 mSDtfsCounter, 462 mSDsluCounter, 2296 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 3526 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:21,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 3526 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-06 21:54:21,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1919 states. [2023-11-06 21:54:21,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1919 to 1451. [2023-11-06 21:54:21,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1451 states, 887 states have (on average 1.940248027057497) internal successors, (1721), 1428 states have internal predecessors, (1721), 22 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-06 21:54:21,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1451 states to 1451 states and 1761 transitions. [2023-11-06 21:54:21,795 INFO L78 Accepts]: Start accepts. Automaton has 1451 states and 1761 transitions. Word has length 16 [2023-11-06 21:54:21,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:21,795 INFO L495 AbstractCegarLoop]: Abstraction has 1451 states and 1761 transitions. [2023-11-06 21:54:21,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:21,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1451 states and 1761 transitions. [2023-11-06 21:54:21,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-06 21:54:21,796 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:21,797 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:21,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-06 21:54:22,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 21:54:22,009 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-11-06 21:54:22,010 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:22,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1057218028, now seen corresponding path program 1 times [2023-11-06 21:54:22,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:54:22,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1733533695] [2023-11-06 21:54:22,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:22,011 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 [2023-11-06 21:54:22,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:54:22,012 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 21:54:22,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 21:54:22,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:22,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 21:54:22,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:54:22,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:22,234 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:54:22,234 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:54:22,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1733533695] [2023-11-06 21:54:22,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1733533695] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:22,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:22,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:54:22,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904201883] [2023-11-06 21:54:22,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:22,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:54:22,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:54:22,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:54:22,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:54:22,237 INFO L87 Difference]: Start difference. First operand 1451 states and 1761 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2023-11-06 21:54:22,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:22,273 INFO L93 Difference]: Finished difference Result 1391 states and 1675 transitions. [2023-11-06 21:54:22,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:54:22,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 19 [2023-11-06 21:54:22,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:22,281 INFO L225 Difference]: With dead ends: 1391 [2023-11-06 21:54:22,281 INFO L226 Difference]: Without dead ends: 1391 [2023-11-06 21:54:22,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:54:22,281 INFO L413 NwaCegarLoop]: 1193 mSDtfsCounter, 81 mSDsluCounter, 1121 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 2314 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:22,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 2314 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:54:22,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2023-11-06 21:54:22,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1391. [2023-11-06 21:54:22,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 851 states have (on average 1.9212690951821387) internal successors, (1635), 1368 states have internal predecessors, (1635), 22 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-06 21:54:22,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 1675 transitions. [2023-11-06 21:54:22,310 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 1675 transitions. Word has length 19 [2023-11-06 21:54:22,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:22,310 INFO L495 AbstractCegarLoop]: Abstraction has 1391 states and 1675 transitions. [2023-11-06 21:54:22,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2023-11-06 21:54:22,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 1675 transitions. [2023-11-06 21:54:22,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-06 21:54:22,312 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:22,312 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] [2023-11-06 21:54:22,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 21:54:22,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 21:54:22,525 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-11-06 21:54:22,526 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:22,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1920722190, now seen corresponding path program 1 times [2023-11-06 21:54:22,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:54:22,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [739929067] [2023-11-06 21:54:22,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:22,527 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 [2023-11-06 21:54:22,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:54:22,528 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 21:54:22,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 21:54:22,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:22,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 21:54:22,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:54:22,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:22,771 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:54:22,772 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:54:22,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [739929067] [2023-11-06 21:54:22,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [739929067] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:22,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:22,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:54:22,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304259461] [2023-11-06 21:54:22,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:22,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:54:22,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:54:22,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:54:22,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:54:22,774 INFO L87 Difference]: Start difference. First operand 1391 states and 1675 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2023-11-06 21:54:22,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:22,865 INFO L93 Difference]: Finished difference Result 1363 states and 1619 transitions. [2023-11-06 21:54:22,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:54:22,866 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 21 [2023-11-06 21:54:22,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:22,873 INFO L225 Difference]: With dead ends: 1363 [2023-11-06 21:54:22,873 INFO L226 Difference]: Without dead ends: 1363 [2023-11-06 21:54:22,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:54:22,874 INFO L413 NwaCegarLoop]: 1148 mSDtfsCounter, 62 mSDsluCounter, 2262 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 3410 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:22,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 3410 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:54:22,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2023-11-06 21:54:22,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1361. [2023-11-06 21:54:22,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1361 states, 835 states have (on average 1.888622754491018) internal successors, (1577), 1338 states have internal predecessors, (1577), 22 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-06 21:54:22,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 1617 transitions. [2023-11-06 21:54:22,901 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 1617 transitions. Word has length 21 [2023-11-06 21:54:22,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:22,902 INFO L495 AbstractCegarLoop]: Abstraction has 1361 states and 1617 transitions. [2023-11-06 21:54:22,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2023-11-06 21:54:22,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 1617 transitions. [2023-11-06 21:54:22,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-06 21:54:22,903 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:22,903 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] [2023-11-06 21:54:22,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-06 21:54:23,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 21:54:23,116 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-11-06 21:54:23,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:23,117 INFO L85 PathProgramCache]: Analyzing trace with hash -956254243, now seen corresponding path program 1 times [2023-11-06 21:54:23,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:54:23,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [625590352] [2023-11-06 21:54:23,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:23,117 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 [2023-11-06 21:54:23,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:54:23,118 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 21:54:23,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 21:54:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:23,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 21:54:23,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:54:23,406 INFO L351 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 [2023-11-06 21:54:23,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:23,672 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:54:23,673 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:54:23,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [625590352] [2023-11-06 21:54:23,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [625590352] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:23,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:23,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:54:23,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501326516] [2023-11-06 21:54:23,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:23,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:54:23,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:54:23,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:54:23,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:54:23,674 INFO L87 Difference]: Start difference. First operand 1361 states and 1617 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 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) [2023-11-06 21:54:30,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:30,861 INFO L93 Difference]: Finished difference Result 2110 states and 2511 transitions. [2023-11-06 21:54:30,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:54:30,862 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 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 35 [2023-11-06 21:54:30,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:30,874 INFO L225 Difference]: With dead ends: 2110 [2023-11-06 21:54:30,875 INFO L226 Difference]: Without dead ends: 2110 [2023-11-06 21:54:30,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:54:30,876 INFO L413 NwaCegarLoop]: 1501 mSDtfsCounter, 1365 mSDsluCounter, 2130 mSDsCounter, 0 mSdLazyCounter, 2384 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1370 SdHoareTripleChecker+Valid, 3631 SdHoareTripleChecker+Invalid, 2392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 2384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:30,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1370 Valid, 3631 Invalid, 2392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 2384 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2023-11-06 21:54:30,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2110 states. [2023-11-06 21:54:30,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2110 to 1357. [2023-11-06 21:54:30,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1357 states, 835 states have (on average 1.8790419161676646) internal successors, (1569), 1334 states have internal predecessors, (1569), 22 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-06 21:54:30,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 1609 transitions. [2023-11-06 21:54:30,923 INFO L78 Accepts]: Start accepts. Automaton has 1357 states and 1609 transitions. Word has length 35 [2023-11-06 21:54:30,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:30,923 INFO L495 AbstractCegarLoop]: Abstraction has 1357 states and 1609 transitions. [2023-11-06 21:54:30,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 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) [2023-11-06 21:54:30,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1357 states and 1609 transitions. [2023-11-06 21:54:30,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-06 21:54:30,925 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:30,925 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] [2023-11-06 21:54:30,942 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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)] Ended with exit code 0 [2023-11-06 21:54:31,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 21:54:31,138 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-11-06 21:54:31,138 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:31,138 INFO L85 PathProgramCache]: Analyzing trace with hash -956254244, now seen corresponding path program 1 times [2023-11-06 21:54:31,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:54:31,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1171047646] [2023-11-06 21:54:31,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:31,140 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 [2023-11-06 21:54:31,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:54:31,141 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 21:54:31,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 21:54:31,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:31,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 21:54:31,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:54:31,429 INFO L351 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 [2023-11-06 21:54:31,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:31,539 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:54:31,539 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:54:31,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1171047646] [2023-11-06 21:54:31,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1171047646] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:31,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:31,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:54:31,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973247877] [2023-11-06 21:54:31,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:31,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:54:31,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:54:31,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:54:31,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:54:31,542 INFO L87 Difference]: Start difference. First operand 1357 states and 1609 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 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) [2023-11-06 21:54:37,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:37,310 INFO L93 Difference]: Finished difference Result 2444 states and 2925 transitions. [2023-11-06 21:54:37,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:54:37,312 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 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 35 [2023-11-06 21:54:37,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:37,324 INFO L225 Difference]: With dead ends: 2444 [2023-11-06 21:54:37,324 INFO L226 Difference]: Without dead ends: 2444 [2023-11-06 21:54:37,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:54:37,325 INFO L413 NwaCegarLoop]: 1124 mSDtfsCounter, 1591 mSDsluCounter, 1939 mSDsCounter, 0 mSdLazyCounter, 2564 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1597 SdHoareTripleChecker+Valid, 3063 SdHoareTripleChecker+Invalid, 2574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:37,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1597 Valid, 3063 Invalid, 2574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 2564 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-11-06 21:54:37,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2444 states. [2023-11-06 21:54:37,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2444 to 1353. [2023-11-06 21:54:37,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1353 states, 835 states have (on average 1.8694610778443115) internal successors, (1561), 1330 states have internal predecessors, (1561), 22 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-06 21:54:37,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1353 states to 1353 states and 1601 transitions. [2023-11-06 21:54:37,368 INFO L78 Accepts]: Start accepts. Automaton has 1353 states and 1601 transitions. Word has length 35 [2023-11-06 21:54:37,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:37,369 INFO L495 AbstractCegarLoop]: Abstraction has 1353 states and 1601 transitions. [2023-11-06 21:54:37,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 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) [2023-11-06 21:54:37,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1353 states and 1601 transitions. [2023-11-06 21:54:37,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-06 21:54:37,371 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:37,371 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:37,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 21:54:37,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 21:54:37,589 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-11-06 21:54:37,589 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:37,589 INFO L85 PathProgramCache]: Analyzing trace with hash 103981850, now seen corresponding path program 1 times [2023-11-06 21:54:37,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:54:37,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1246702028] [2023-11-06 21:54:37,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:37,590 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 [2023-11-06 21:54:37,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:54:37,592 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 21:54:37,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 21:54:37,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:37,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 21:54:37,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:54:37,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:37,998 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:54:37,998 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:54:37,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1246702028] [2023-11-06 21:54:37,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1246702028] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:37,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:37,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:54:37,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347867543] [2023-11-06 21:54:37,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:38,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:54:38,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:54:38,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:54:38,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:54:38,001 INFO L87 Difference]: Start difference. First operand 1353 states and 1601 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:38,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:38,076 INFO L93 Difference]: Finished difference Result 1341 states and 1581 transitions. [2023-11-06 21:54:38,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:54:38,077 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-11-06 21:54:38,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:38,093 INFO L225 Difference]: With dead ends: 1341 [2023-11-06 21:54:38,093 INFO L226 Difference]: Without dead ends: 1341 [2023-11-06 21:54:38,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:54:38,094 INFO L413 NwaCegarLoop]: 1142 mSDtfsCounter, 31 mSDsluCounter, 2246 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3388 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:38,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3388 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:54:38,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2023-11-06 21:54:38,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1341. [2023-11-06 21:54:38,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1341 states, 823 states have (on average 1.8724179829890644) internal successors, (1541), 1318 states have internal predecessors, (1541), 22 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-06 21:54:38,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 1581 transitions. [2023-11-06 21:54:38,121 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 1581 transitions. Word has length 55 [2023-11-06 21:54:38,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:38,123 INFO L495 AbstractCegarLoop]: Abstraction has 1341 states and 1581 transitions. [2023-11-06 21:54:38,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:38,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 1581 transitions. [2023-11-06 21:54:38,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-06 21:54:38,128 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:38,129 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:38,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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)] Ended with exit code 0 [2023-11-06 21:54:38,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 21:54:38,342 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-11-06 21:54:38,342 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:38,343 INFO L85 PathProgramCache]: Analyzing trace with hash -635872026, now seen corresponding path program 1 times [2023-11-06 21:54:38,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:54:38,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1223593105] [2023-11-06 21:54:38,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:38,344 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 [2023-11-06 21:54:38,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:54:38,346 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 21:54:38,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-06 21:54:38,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:38,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 21:54:38,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:54:38,876 INFO L322 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2023-11-06 21:54:38,877 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 17 [2023-11-06 21:54:38,976 INFO L322 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-11-06 21:54:38,976 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2023-11-06 21:54:39,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:39,550 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:54:39,551 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:54:39,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1223593105] [2023-11-06 21:54:39,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1223593105] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:39,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:39,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:54:39,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970237501] [2023-11-06 21:54:39,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:39,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 21:54:39,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:54:39,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:54:39,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:54:39,553 INFO L87 Difference]: Start difference. First operand 1341 states and 1581 transitions. Second operand has 6 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:45,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:45,132 INFO L93 Difference]: Finished difference Result 3109 states and 3652 transitions. [2023-11-06 21:54:45,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:54:45,133 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-11-06 21:54:45,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:45,143 INFO L225 Difference]: With dead ends: 3109 [2023-11-06 21:54:45,143 INFO L226 Difference]: Without dead ends: 3109 [2023-11-06 21:54:45,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:54:45,144 INFO L413 NwaCegarLoop]: 1259 mSDtfsCounter, 3618 mSDsluCounter, 1123 mSDsCounter, 0 mSdLazyCounter, 1766 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3618 SdHoareTripleChecker+Valid, 2382 SdHoareTripleChecker+Invalid, 1840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:45,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3618 Valid, 2382 Invalid, 1840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1766 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-11-06 21:54:45,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3109 states. [2023-11-06 21:54:45,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3109 to 1788. [2023-11-06 21:54:45,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1788 states, 1254 states have (on average 1.8572567783094098) internal successors, (2329), 1752 states have internal predecessors, (2329), 35 states have call successors, (35), 9 states have call predecessors, (35), 7 states have return successors, (31), 28 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-06 21:54:45,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1788 states to 1788 states and 2395 transitions. [2023-11-06 21:54:45,184 INFO L78 Accepts]: Start accepts. Automaton has 1788 states and 2395 transitions. Word has length 63 [2023-11-06 21:54:45,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:45,185 INFO L495 AbstractCegarLoop]: Abstraction has 1788 states and 2395 transitions. [2023-11-06 21:54:45,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:45,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1788 states and 2395 transitions. [2023-11-06 21:54:45,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-06 21:54:45,186 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:45,186 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:45,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-11-06 21:54:45,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 21:54:45,412 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-11-06 21:54:45,412 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:45,413 INFO L85 PathProgramCache]: Analyzing trace with hash -635872025, now seen corresponding path program 1 times [2023-11-06 21:54:45,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:54:45,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [761429519] [2023-11-06 21:54:45,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:45,414 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 [2023-11-06 21:54:45,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:54:45,415 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 21:54:45,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-06 21:54:45,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:45,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 21:54:45,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:54:45,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:54:45,931 INFO L351 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 [2023-11-06 21:54:46,020 INFO L322 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-06 21:54:46,020 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-11-06 21:54:46,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:46,924 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:54:46,924 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:54:46,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [761429519] [2023-11-06 21:54:46,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [761429519] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:46,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:46,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:54:46,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433527129] [2023-11-06 21:54:46,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:46,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 21:54:46,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:54:46,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:54:46,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:54:46,927 INFO L87 Difference]: Start difference. First operand 1788 states and 2395 transitions. Second operand has 6 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:52,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:52,412 INFO L93 Difference]: Finished difference Result 1794 states and 2402 transitions. [2023-11-06 21:54:52,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:54:52,416 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-11-06 21:54:52,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:52,423 INFO L225 Difference]: With dead ends: 1794 [2023-11-06 21:54:52,423 INFO L226 Difference]: Without dead ends: 1794 [2023-11-06 21:54:52,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:54:52,424 INFO L413 NwaCegarLoop]: 1137 mSDtfsCounter, 113 mSDsluCounter, 1592 mSDsCounter, 0 mSdLazyCounter, 1902 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 2729 SdHoareTripleChecker+Invalid, 1905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:52,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 2729 Invalid, 1905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1902 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-11-06 21:54:52,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1794 states. [2023-11-06 21:54:52,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1794 to 1793. [2023-11-06 21:54:52,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1793 states, 1258 states have (on average 1.854531001589825) internal successors, (2333), 1756 states have internal predecessors, (2333), 36 states have call successors, (36), 10 states have call predecessors, (36), 7 states have return successors, (32), 28 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-06 21:54:52,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1793 states to 1793 states and 2401 transitions. [2023-11-06 21:54:52,463 INFO L78 Accepts]: Start accepts. Automaton has 1793 states and 2401 transitions. Word has length 63 [2023-11-06 21:54:52,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:52,464 INFO L495 AbstractCegarLoop]: Abstraction has 1793 states and 2401 transitions. [2023-11-06 21:54:52,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:52,464 INFO L276 IsEmpty]: Start isEmpty. Operand 1793 states and 2401 transitions. [2023-11-06 21:54:52,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-06 21:54:52,465 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:52,465 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:52,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-11-06 21:54:52,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 21:54:52,682 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-11-06 21:54:52,682 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:52,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1248809324, now seen corresponding path program 1 times [2023-11-06 21:54:52,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:54:52,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1127295886] [2023-11-06 21:54:52,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:52,683 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 [2023-11-06 21:54:52,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:54:52,685 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 21:54:52,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-11-06 21:54:53,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:53,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 21:54:53,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:54:53,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:53,140 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:54:53,140 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:54:53,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1127295886] [2023-11-06 21:54:53,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1127295886] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:53,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:53,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 21:54:53,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457552257] [2023-11-06 21:54:53,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:53,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 21:54:53,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:54:53,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:54:53,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:54:53,142 INFO L87 Difference]: Start difference. First operand 1793 states and 2401 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 4 states have internal predecessors, (68), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:53,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:53,264 INFO L93 Difference]: Finished difference Result 1819 states and 2428 transitions. [2023-11-06 21:54:53,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:54:53,265 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 4 states have internal predecessors, (68), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2023-11-06 21:54:53,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:53,270 INFO L225 Difference]: With dead ends: 1819 [2023-11-06 21:54:53,270 INFO L226 Difference]: Without dead ends: 1819 [2023-11-06 21:54:53,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-06 21:54:53,271 INFO L413 NwaCegarLoop]: 1152 mSDtfsCounter, 19 mSDsluCounter, 4603 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 5755 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:53,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 5755 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:54:53,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1819 states. [2023-11-06 21:54:53,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1819 to 1817. [2023-11-06 21:54:53,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1817 states, 1276 states have (on average 1.8463949843260188) internal successors, (2356), 1776 states have internal predecessors, (2356), 38 states have call successors, (38), 14 states have call predecessors, (38), 11 states have return successors, (34), 30 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-06 21:54:53,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1817 states to 1817 states and 2428 transitions. [2023-11-06 21:54:53,323 INFO L78 Accepts]: Start accepts. Automaton has 1817 states and 2428 transitions. Word has length 71 [2023-11-06 21:54:53,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:53,324 INFO L495 AbstractCegarLoop]: Abstraction has 1817 states and 2428 transitions. [2023-11-06 21:54:53,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 4 states have internal predecessors, (68), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:53,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1817 states and 2428 transitions. [2023-11-06 21:54:53,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-06 21:54:53,325 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:53,325 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:53,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-11-06 21:54:53,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 21:54:53,540 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-11-06 21:54:53,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:53,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1239215792, now seen corresponding path program 1 times [2023-11-06 21:54:53,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:54:53,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [19292131] [2023-11-06 21:54:53,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:53,541 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 [2023-11-06 21:54:53,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:54:53,543 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 21:54:53,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-06 21:54:53,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:53,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 21:54:53,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:54:54,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:54,122 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:54:54,122 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:54:54,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [19292131] [2023-11-06 21:54:54,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [19292131] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:54,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:54,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:54:54,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685306368] [2023-11-06 21:54:54,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:54,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 21:54:54,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:54:54,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:54:54,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:54:54,125 INFO L87 Difference]: Start difference. First operand 1817 states and 2428 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 21:54:54,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:54,474 INFO L93 Difference]: Finished difference Result 1829 states and 2442 transitions. [2023-11-06 21:54:54,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:54:54,475 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2023-11-06 21:54:54,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:54,481 INFO L225 Difference]: With dead ends: 1829 [2023-11-06 21:54:54,481 INFO L226 Difference]: Without dead ends: 1829 [2023-11-06 21:54:54,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:54:54,482 INFO L413 NwaCegarLoop]: 1136 mSDtfsCounter, 22 mSDsluCounter, 4444 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 5580 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:54,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 5580 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 21:54:54,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1829 states. [2023-11-06 21:54:54,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1829 to 1820. [2023-11-06 21:54:54,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1820 states, 1278 states have (on average 1.8450704225352113) internal successors, (2358), 1778 states have internal predecessors, (2358), 38 states have call successors, (38), 14 states have call predecessors, (38), 12 states have return successors, (35), 30 states have call predecessors, (35), 34 states have call successors, (35) [2023-11-06 21:54:54,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1820 states to 1820 states and 2431 transitions. [2023-11-06 21:54:54,521 INFO L78 Accepts]: Start accepts. Automaton has 1820 states and 2431 transitions. Word has length 69 [2023-11-06 21:54:54,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:54,521 INFO L495 AbstractCegarLoop]: Abstraction has 1820 states and 2431 transitions. [2023-11-06 21:54:54,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 21:54:54,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1820 states and 2431 transitions. [2023-11-06 21:54:54,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-06 21:54:54,523 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:54,523 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:54,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-11-06 21:54:54,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 21:54:54,740 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-11-06 21:54:54,741 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:54,741 INFO L85 PathProgramCache]: Analyzing trace with hash -629537416, now seen corresponding path program 1 times [2023-11-06 21:54:54,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:54:54,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1286245989] [2023-11-06 21:54:54,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:54,742 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 [2023-11-06 21:54:54,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:54:54,743 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 21:54:54,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-11-06 21:54:55,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:55,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 21:54:55,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:54:55,258 INFO L351 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 [2023-11-06 21:54:55,452 WARN L861 $PredicateComparison]: unable to prove that (exists ((|alt_malloc_#res.base| (_ BitVec 32))) (= |c_#valid| (store |c_old(#valid)| |alt_malloc_#res.base| (_ bv1 1)))) is different from true [2023-11-06 21:54:55,474 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-06 21:54:55,474 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-06 21:54:55,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:55,488 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:54:55,488 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:54:55,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1286245989] [2023-11-06 21:54:55,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1286245989] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:55,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:55,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:54:55,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344549985] [2023-11-06 21:54:55,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:55,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 21:54:55,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:54:55,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:54:55,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=14, Unknown=1, NotChecked=6, Total=30 [2023-11-06 21:54:55,491 INFO L87 Difference]: Start difference. First operand 1820 states and 2431 transitions. Second operand has 6 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 21:55:01,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:55:01,244 INFO L93 Difference]: Finished difference Result 3064 states and 4037 transitions. [2023-11-06 21:55:01,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:55:01,252 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 74 [2023-11-06 21:55:01,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:55:01,261 INFO L225 Difference]: With dead ends: 3064 [2023-11-06 21:55:01,261 INFO L226 Difference]: Without dead ends: 3064 [2023-11-06 21:55:01,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=20, Unknown=1, NotChecked=8, Total=42 [2023-11-06 21:55:01,262 INFO L413 NwaCegarLoop]: 1083 mSDtfsCounter, 1551 mSDsluCounter, 1881 mSDsCounter, 0 mSdLazyCounter, 2608 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1557 SdHoareTripleChecker+Valid, 2964 SdHoareTripleChecker+Invalid, 4863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 2608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2230 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-11-06 21:55:01,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1557 Valid, 2964 Invalid, 4863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 2608 Invalid, 0 Unknown, 2230 Unchecked, 5.6s Time] [2023-11-06 21:55:01,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3064 states. [2023-11-06 21:55:01,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3064 to 1819. [2023-11-06 21:55:01,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1819 states, 1278 states have (on average 1.8435054773082942) internal successors, (2356), 1777 states have internal predecessors, (2356), 38 states have call successors, (38), 14 states have call predecessors, (38), 12 states have return successors, (35), 30 states have call predecessors, (35), 34 states have call successors, (35) [2023-11-06 21:55:01,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1819 states to 1819 states and 2429 transitions. [2023-11-06 21:55:01,317 INFO L78 Accepts]: Start accepts. Automaton has 1819 states and 2429 transitions. Word has length 74 [2023-11-06 21:55:01,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:55:01,317 INFO L495 AbstractCegarLoop]: Abstraction has 1819 states and 2429 transitions. [2023-11-06 21:55:01,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 21:55:01,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1819 states and 2429 transitions. [2023-11-06 21:55:01,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-06 21:55:01,324 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:55:01,324 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:55:01,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-11-06 21:55:01,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 21:55:01,540 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-11-06 21:55:01,540 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:01,540 INFO L85 PathProgramCache]: Analyzing trace with hash -629537415, now seen corresponding path program 1 times [2023-11-06 21:55:01,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:55:01,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1921201197] [2023-11-06 21:55:01,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:01,541 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 [2023-11-06 21:55:01,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:55:01,541 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 21:55:01,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-11-06 21:55:02,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:02,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 21:55:02,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:55:02,137 INFO L351 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 [2023-11-06 21:55:02,144 INFO L351 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 [2023-11-06 21:55:02,836 WARN L861 $PredicateComparison]: unable to prove that (exists ((|alt_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |alt_malloc_#res.base| (select |c_#length| |alt_malloc_#res.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |alt_malloc_#res.base|)))) is different from true [2023-11-06 21:55:02,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:55:02,860 INFO L351 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 [2023-11-06 21:55:02,877 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-06 21:55:02,878 INFO L351 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 [2023-11-06 21:55:02,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:55:02,892 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:55:02,893 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:55:02,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1921201197] [2023-11-06 21:55:02,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1921201197] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:02,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:02,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 21:55:02,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368426093] [2023-11-06 21:55:02,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:02,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:55:02,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:55:02,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:55:02,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=21, Unknown=1, NotChecked=8, Total=42 [2023-11-06 21:55:02,895 INFO L87 Difference]: Start difference. First operand 1819 states and 2429 transitions. Second operand has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 21:55:13,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:55:13,354 INFO L93 Difference]: Finished difference Result 3115 states and 4117 transitions. [2023-11-06 21:55:13,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 21:55:13,354 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 74 [2023-11-06 21:55:13,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:55:13,361 INFO L225 Difference]: With dead ends: 3115 [2023-11-06 21:55:13,362 INFO L226 Difference]: Without dead ends: 3115 [2023-11-06 21:55:13,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=28, Unknown=1, NotChecked=10, Total=56 [2023-11-06 21:55:13,363 INFO L413 NwaCegarLoop]: 1270 mSDtfsCounter, 1676 mSDsluCounter, 1971 mSDsCounter, 0 mSdLazyCounter, 4638 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1682 SdHoareTripleChecker+Valid, 3241 SdHoareTripleChecker+Invalid, 6887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 4638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2220 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2023-11-06 21:55:13,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1682 Valid, 3241 Invalid, 6887 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [29 Valid, 4638 Invalid, 0 Unknown, 2220 Unchecked, 10.3s Time] [2023-11-06 21:55:13,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3115 states. [2023-11-06 21:55:13,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3115 to 1815. [2023-11-06 21:55:13,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1815 states, 1282 states have (on average 1.828393135725429) internal successors, (2344), 1773 states have internal predecessors, (2344), 38 states have call successors, (38), 14 states have call predecessors, (38), 12 states have return successors, (35), 30 states have call predecessors, (35), 34 states have call successors, (35) [2023-11-06 21:55:13,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1815 states to 1815 states and 2417 transitions. [2023-11-06 21:55:13,400 INFO L78 Accepts]: Start accepts. Automaton has 1815 states and 2417 transitions. Word has length 74 [2023-11-06 21:55:13,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:55:13,401 INFO L495 AbstractCegarLoop]: Abstraction has 1815 states and 2417 transitions. [2023-11-06 21:55:13,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 21:55:13,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1815 states and 2417 transitions. [2023-11-06 21:55:13,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-06 21:55:13,402 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:55:13,402 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:55:13,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-11-06 21:55:13,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 21:55:13,616 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting alt_bzeroErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-11-06 21:55:13,616 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:13,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1241397759, now seen corresponding path program 1 times [2023-11-06 21:55:13,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:55:13,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [322400425] [2023-11-06 21:55:13,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:13,617 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 [2023-11-06 21:55:13,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:55:13,620 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 21:55:13,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-11-06 21:55:14,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:14,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 21:55:14,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:55:14,108 INFO L351 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 [2023-11-06 21:55:14,141 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-06 21:55:14,177 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-06 21:55:14,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:55:14,227 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:55:14,227 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:55:14,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [322400425] [2023-11-06 21:55:14,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [322400425] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:14,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:14,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:55:14,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138234417] [2023-11-06 21:55:14,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:14,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 21:55:14,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:55:14,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 21:55:14,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-06 21:55:14,230 INFO L87 Difference]: Start difference. First operand 1815 states and 2417 transitions. Second operand has 8 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 21:55:20,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:55:20,253 INFO L93 Difference]: Finished difference Result 1830 states and 2433 transitions. [2023-11-06 21:55:20,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 21:55:20,254 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 81 [2023-11-06 21:55:20,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:55:20,258 INFO L225 Difference]: With dead ends: 1830 [2023-11-06 21:55:20,258 INFO L226 Difference]: Without dead ends: 1830 [2023-11-06 21:55:20,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-06 21:55:20,259 INFO L413 NwaCegarLoop]: 1139 mSDtfsCounter, 19 mSDsluCounter, 3725 mSDsCounter, 0 mSdLazyCounter, 3162 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 4864 SdHoareTripleChecker+Invalid, 3164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-11-06 21:55:20,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 4864 Invalid, 3164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3162 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-11-06 21:55:20,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1830 states. [2023-11-06 21:55:20,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1830 to 1829. [2023-11-06 21:55:20,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1829 states, 1294 states have (on average 1.8238021638330757) internal successors, (2360), 1785 states have internal predecessors, (2360), 38 states have call successors, (38), 16 states have call predecessors, (38), 14 states have return successors, (35), 30 states have call predecessors, (35), 34 states have call successors, (35) [2023-11-06 21:55:20,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2433 transitions. [2023-11-06 21:55:20,290 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2433 transitions. Word has length 81 [2023-11-06 21:55:20,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:55:20,290 INFO L495 AbstractCegarLoop]: Abstraction has 1829 states and 2433 transitions. [2023-11-06 21:55:20,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 21:55:20,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2433 transitions. [2023-11-06 21:55:20,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-06 21:55:20,291 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:55:20,292 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:55:20,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-11-06 21:55:20,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 21:55:20,506 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting alt_bzeroErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-11-06 21:55:20,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:20,507 INFO L85 PathProgramCache]: Analyzing trace with hash 171375211, now seen corresponding path program 1 times [2023-11-06 21:55:20,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:55:20,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1515499747] [2023-11-06 21:55:20,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:20,508 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 [2023-11-06 21:55:20,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:55:20,509 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 21:55:20,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-11-06 21:55:20,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:20,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-06 21:55:20,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:55:20,962 INFO L351 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 [2023-11-06 21:55:21,016 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-06 21:55:21,021 INFO L351 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 13 treesize of output 9 [2023-11-06 21:55:21,098 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-11-06 21:55:21,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:55:21,214 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:55:21,214 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:55:21,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1515499747] [2023-11-06 21:55:21,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1515499747] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:21,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:21,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 21:55:21,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644512286] [2023-11-06 21:55:21,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:21,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 21:55:21,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:55:21,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 21:55:21,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-06 21:55:21,216 INFO L87 Difference]: Start difference. First operand 1829 states and 2433 transitions. Second operand has 9 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 21:55:29,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:55:29,324 INFO L93 Difference]: Finished difference Result 1829 states and 2431 transitions. [2023-11-06 21:55:29,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 21:55:29,325 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 82 [2023-11-06 21:55:29,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:55:29,329 INFO L225 Difference]: With dead ends: 1829 [2023-11-06 21:55:29,329 INFO L226 Difference]: Without dead ends: 1829 [2023-11-06 21:55:29,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-11-06 21:55:29,330 INFO L413 NwaCegarLoop]: 1134 mSDtfsCounter, 17 mSDsluCounter, 4711 mSDsCounter, 0 mSdLazyCounter, 3325 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 5845 SdHoareTripleChecker+Invalid, 3326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-11-06 21:55:29,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 5845 Invalid, 3326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3325 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2023-11-06 21:55:29,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1829 states. [2023-11-06 21:55:29,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1829 to 1829. [2023-11-06 21:55:29,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1829 states, 1294 states have (on average 1.82225656877898) internal successors, (2358), 1785 states have internal predecessors, (2358), 38 states have call successors, (38), 16 states have call predecessors, (38), 14 states have return successors, (35), 30 states have call predecessors, (35), 34 states have call successors, (35) [2023-11-06 21:55:29,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2431 transitions. [2023-11-06 21:55:29,370 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2431 transitions. Word has length 82 [2023-11-06 21:55:29,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:55:29,370 INFO L495 AbstractCegarLoop]: Abstraction has 1829 states and 2431 transitions. [2023-11-06 21:55:29,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 21:55:29,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2431 transitions. [2023-11-06 21:55:29,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-06 21:55:29,372 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:55:29,372 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:55:29,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2023-11-06 21:55:29,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 21:55:29,587 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-11-06 21:55:29,588 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:29,588 INFO L85 PathProgramCache]: Analyzing trace with hash 123907486, now seen corresponding path program 1 times [2023-11-06 21:55:29,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:55:29,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1776823660] [2023-11-06 21:55:29,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:29,589 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 21:55:29,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:55:29,590 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 21:55:29,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-11-06 21:55:30,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:30,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 21:55:30,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:55:30,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:55:30,124 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:55:30,124 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:55:30,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1776823660] [2023-11-06 21:55:30,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1776823660] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:30,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:30,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:55:30,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721795187] [2023-11-06 21:55:30,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:30,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:55:30,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:55:30,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:55:30,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:55:30,127 INFO L87 Difference]: Start difference. First operand 1829 states and 2431 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 21:55:30,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:55:30,215 INFO L93 Difference]: Finished difference Result 1845 states and 2449 transitions. [2023-11-06 21:55:30,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:55:30,219 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 89 [2023-11-06 21:55:30,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:55:30,224 INFO L225 Difference]: With dead ends: 1845 [2023-11-06 21:55:30,225 INFO L226 Difference]: Without dead ends: 1839 [2023-11-06 21:55:30,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:55:30,226 INFO L413 NwaCegarLoop]: 1144 mSDtfsCounter, 6 mSDsluCounter, 3416 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 4560 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:55:30,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 4560 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:55:30,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1839 states. [2023-11-06 21:55:30,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1839 to 1839. [2023-11-06 21:55:30,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1839 states, 1302 states have (on average 1.8187403993855606) internal successors, (2368), 1795 states have internal predecessors, (2368), 38 states have call successors, (38), 16 states have call predecessors, (38), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2023-11-06 21:55:30,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1839 states to 1839 states and 2443 transitions. [2023-11-06 21:55:30,255 INFO L78 Accepts]: Start accepts. Automaton has 1839 states and 2443 transitions. Word has length 89 [2023-11-06 21:55:30,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:55:30,256 INFO L495 AbstractCegarLoop]: Abstraction has 1839 states and 2443 transitions. [2023-11-06 21:55:30,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 21:55:30,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1839 states and 2443 transitions. [2023-11-06 21:55:30,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-06 21:55:30,257 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:55:30,257 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:55:30,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-11-06 21:55:30,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 21:55:30,472 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-11-06 21:55:30,472 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:30,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1090423684, now seen corresponding path program 1 times [2023-11-06 21:55:30,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:55:30,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1609736720] [2023-11-06 21:55:30,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:30,473 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 [2023-11-06 21:55:30,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:55:30,475 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 21:55:30,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-11-06 21:55:30,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:30,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 21:55:30,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:55:31,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:55:31,036 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:55:31,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:55:31,204 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:55:31,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1609736720] [2023-11-06 21:55:31,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1609736720] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:55:31,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 21:55:31,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-06 21:55:31,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111865388] [2023-11-06 21:55:31,206 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 21:55:31,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 21:55:31,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:55:31,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 21:55:31,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-06 21:55:31,207 INFO L87 Difference]: Start difference. First operand 1839 states and 2443 transitions. Second operand has 10 states, 10 states have (on average 9.1) internal successors, (91), 10 states have internal predecessors, (91), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-06 21:55:31,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:55:31,492 INFO L93 Difference]: Finished difference Result 1865 states and 2473 transitions. [2023-11-06 21:55:31,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 21:55:31,493 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 10 states have internal predecessors, (91), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 90 [2023-11-06 21:55:31,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:55:31,498 INFO L225 Difference]: With dead ends: 1865 [2023-11-06 21:55:31,498 INFO L226 Difference]: Without dead ends: 1853 [2023-11-06 21:55:31,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-11-06 21:55:31,500 INFO L413 NwaCegarLoop]: 1145 mSDtfsCounter, 33 mSDsluCounter, 3421 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 4566 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:55:31,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 4566 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:55:31,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1853 states. [2023-11-06 21:55:31,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1853 to 1847. [2023-11-06 21:55:31,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1847 states, 1310 states have (on average 1.8152671755725192) internal successors, (2378), 1803 states have internal predecessors, (2378), 38 states have call successors, (38), 16 states have call predecessors, (38), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2023-11-06 21:55:31,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1847 states to 1847 states and 2453 transitions. [2023-11-06 21:55:31,527 INFO L78 Accepts]: Start accepts. Automaton has 1847 states and 2453 transitions. Word has length 90 [2023-11-06 21:55:31,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:55:31,528 INFO L495 AbstractCegarLoop]: Abstraction has 1847 states and 2453 transitions. [2023-11-06 21:55:31,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 10 states have internal predecessors, (91), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-06 21:55:31,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1847 states and 2453 transitions. [2023-11-06 21:55:31,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-06 21:55:31,529 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:55:31,529 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:55:31,545 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2023-11-06 21:55:31,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 21:55:31,745 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-11-06 21:55:31,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:31,745 INFO L85 PathProgramCache]: Analyzing trace with hash 2120087326, now seen corresponding path program 2 times [2023-11-06 21:55:31,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:55:31,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1154508701] [2023-11-06 21:55:31,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 21:55:31,746 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 [2023-11-06 21:55:31,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:55:31,748 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 21:55:31,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-11-06 21:55:32,497 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 21:55:32,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:55:32,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 21:55:32,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:55:32,671 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:55:32,671 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:55:33,097 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:55:33,098 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:55:33,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1154508701] [2023-11-06 21:55:33,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1154508701] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:55:33,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 21:55:33,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-06 21:55:33,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281066547] [2023-11-06 21:55:33,099 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 21:55:33,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 21:55:33,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:55:33,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 21:55:33,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2023-11-06 21:55:33,101 INFO L87 Difference]: Start difference. First operand 1847 states and 2453 transitions. Second operand has 16 states, 16 states have (on average 6.0625) internal successors, (97), 16 states have internal predecessors, (97), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-06 21:55:34,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:55:34,071 INFO L93 Difference]: Finished difference Result 1889 states and 2509 transitions. [2023-11-06 21:55:34,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-06 21:55:34,072 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.0625) internal successors, (97), 16 states have internal predecessors, (97), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 93 [2023-11-06 21:55:34,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:55:34,077 INFO L225 Difference]: With dead ends: 1889 [2023-11-06 21:55:34,077 INFO L226 Difference]: Without dead ends: 1877 [2023-11-06 21:55:34,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=343, Invalid=649, Unknown=0, NotChecked=0, Total=992 [2023-11-06 21:55:34,078 INFO L413 NwaCegarLoop]: 1148 mSDtfsCounter, 54 mSDsluCounter, 6843 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 7991 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 21:55:34,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 7991 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 21:55:34,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1877 states. [2023-11-06 21:55:34,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1877 to 1865. [2023-11-06 21:55:34,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1865 states, 1328 states have (on average 1.8087349397590362) internal successors, (2402), 1821 states have internal predecessors, (2402), 38 states have call successors, (38), 16 states have call predecessors, (38), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2023-11-06 21:55:34,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1865 states to 1865 states and 2477 transitions. [2023-11-06 21:55:34,108 INFO L78 Accepts]: Start accepts. Automaton has 1865 states and 2477 transitions. Word has length 93 [2023-11-06 21:55:34,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:55:34,109 INFO L495 AbstractCegarLoop]: Abstraction has 1865 states and 2477 transitions. [2023-11-06 21:55:34,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.0625) internal successors, (97), 16 states have internal predecessors, (97), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-06 21:55:34,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1865 states and 2477 transitions. [2023-11-06 21:55:34,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-06 21:55:34,110 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:55:34,111 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:55:34,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-11-06 21:55:34,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 21:55:34,329 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-11-06 21:55:34,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:34,329 INFO L85 PathProgramCache]: Analyzing trace with hash 149650782, now seen corresponding path program 3 times [2023-11-06 21:55:34,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:55:34,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1229090822] [2023-11-06 21:55:34,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 21:55:34,330 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 [2023-11-06 21:55:34,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:55:34,332 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 21:55:34,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-11-06 21:55:35,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-06 21:55:35,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:55:35,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 21:55:35,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:55:35,852 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:55:35,852 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:55:37,053 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:55:37,054 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:55:37,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1229090822] [2023-11-06 21:55:37,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1229090822] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:55:37,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 21:55:37,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2023-11-06 21:55:37,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254025880] [2023-11-06 21:55:37,055 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 21:55:37,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-06 21:55:37,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:55:37,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-06 21:55:37,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=534, Unknown=0, NotChecked=0, Total=756 [2023-11-06 21:55:37,057 INFO L87 Difference]: Start difference. First operand 1865 states and 2477 transitions. Second operand has 28 states, 28 states have (on average 3.892857142857143) internal successors, (109), 28 states have internal predecessors, (109), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-06 21:55:41,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:55:41,224 INFO L93 Difference]: Finished difference Result 1937 states and 2579 transitions. [2023-11-06 21:55:41,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-11-06 21:55:41,226 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.892857142857143) internal successors, (109), 28 states have internal predecessors, (109), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 99 [2023-11-06 21:55:41,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:55:41,229 INFO L225 Difference]: With dead ends: 1937 [2023-11-06 21:55:41,230 INFO L226 Difference]: Without dead ends: 1919 [2023-11-06 21:55:41,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=924, Invalid=1832, Unknown=0, NotChecked=0, Total=2756 [2023-11-06 21:55:41,231 INFO L413 NwaCegarLoop]: 1154 mSDtfsCounter, 116 mSDsluCounter, 17098 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 18252 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-06 21:55:41,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 18252 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-06 21:55:41,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1919 states. [2023-11-06 21:55:41,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1919 to 1901. [2023-11-06 21:55:41,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1901 states, 1364 states have (on average 1.7947214076246334) internal successors, (2448), 1857 states have internal predecessors, (2448), 38 states have call successors, (38), 16 states have call predecessors, (38), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2023-11-06 21:55:41,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1901 states to 1901 states and 2523 transitions. [2023-11-06 21:55:41,262 INFO L78 Accepts]: Start accepts. Automaton has 1901 states and 2523 transitions. Word has length 99 [2023-11-06 21:55:41,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:55:41,262 INFO L495 AbstractCegarLoop]: Abstraction has 1901 states and 2523 transitions. [2023-11-06 21:55:41,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.892857142857143) internal successors, (109), 28 states have internal predecessors, (109), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-06 21:55:41,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1901 states and 2523 transitions. [2023-11-06 21:55:41,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-06 21:55:41,265 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:55:41,266 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:55:41,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-11-06 21:55:41,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 21:55:41,490 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-11-06 21:55:41,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:41,490 INFO L85 PathProgramCache]: Analyzing trace with hash -947815970, now seen corresponding path program 4 times [2023-11-06 21:55:41,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:55:41,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [443906072] [2023-11-06 21:55:41,491 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 21:55:41,491 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 [2023-11-06 21:55:41,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:55:41,493 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 21:55:41,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-11-06 21:55:42,128 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 21:55:42,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:55:42,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-06 21:55:42,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:55:42,945 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:55:42,945 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:55:45,757 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:55:45,757 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:55:45,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [443906072] [2023-11-06 21:55:45,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [443906072] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:55:45,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 21:55:45,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-11-06 21:55:45,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299570290] [2023-11-06 21:55:45,758 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 21:55:45,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-11-06 21:55:45,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:55:45,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-11-06 21:55:45,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=725, Invalid=1927, Unknown=0, NotChecked=0, Total=2652 [2023-11-06 21:55:45,762 INFO L87 Difference]: Start difference. First operand 1901 states and 2523 transitions. Second operand has 52 states, 52 states have (on average 2.5576923076923075) internal successors, (133), 52 states have internal predecessors, (133), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-06 21:56:00,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:56:00,879 INFO L93 Difference]: Finished difference Result 2027 states and 2713 transitions. [2023-11-06 21:56:00,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2023-11-06 21:56:00,880 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.5576923076923075) internal successors, (133), 52 states have internal predecessors, (133), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 111 [2023-11-06 21:56:00,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:56:00,886 INFO L225 Difference]: With dead ends: 2027 [2023-11-06 21:56:00,886 INFO L226 Difference]: Without dead ends: 2015 [2023-11-06 21:56:00,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1902 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=4121, Invalid=9921, Unknown=0, NotChecked=0, Total=14042 [2023-11-06 21:56:00,892 INFO L413 NwaCegarLoop]: 1165 mSDtfsCounter, 191 mSDsluCounter, 27359 mSDsCounter, 0 mSdLazyCounter, 2413 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 28524 SdHoareTripleChecker+Invalid, 2473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 2413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-06 21:56:00,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 28524 Invalid, 2473 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 2413 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-06 21:56:00,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2015 states. [2023-11-06 21:56:00,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2015 to 1969. [2023-11-06 21:56:00,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1969 states, 1432 states have (on average 1.7737430167597765) internal successors, (2540), 1925 states have internal predecessors, (2540), 38 states have call successors, (38), 16 states have call predecessors, (38), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2023-11-06 21:56:00,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1969 states to 1969 states and 2615 transitions. [2023-11-06 21:56:00,927 INFO L78 Accepts]: Start accepts. Automaton has 1969 states and 2615 transitions. Word has length 111 [2023-11-06 21:56:00,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:56:00,928 INFO L495 AbstractCegarLoop]: Abstraction has 1969 states and 2615 transitions. [2023-11-06 21:56:00,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.5576923076923075) internal successors, (133), 52 states have internal predecessors, (133), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-06 21:56:00,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1969 states and 2615 transitions. [2023-11-06 21:56:00,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-06 21:56:00,930 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:56:00,930 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:56:00,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-11-06 21:56:01,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 21:56:01,148 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-11-06 21:56:01,148 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:56:01,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1884973538, now seen corresponding path program 5 times [2023-11-06 21:56:01,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:56:01,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [516383762] [2023-11-06 21:56:01,150 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 21:56:01,150 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 [2023-11-06 21:56:01,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:56:01,151 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 21:56:01,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-11-06 21:56:02,978 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2023-11-06 21:56:02,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:56:03,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 889 conjuncts, 65 conjunts are in the unsatisfiable core [2023-11-06 21:56:03,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:56:03,039 INFO L351 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 [2023-11-06 21:56:03,236 INFO L322 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-06 21:56:03,237 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-06 21:56:03,289 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-06 21:56:03,430 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-11-06 21:56:05,010 INFO L322 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-06 21:56:05,010 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-06 21:56:05,076 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2023-11-06 21:56:05,133 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2023-11-06 21:56:05,133 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:56:05,790 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:56:05,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [516383762] [2023-11-06 21:56:05,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [516383762] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:56:05,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [115876123] [2023-11-06 21:56:05,791 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 21:56:05,792 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-06 21:56:05,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/cvc4 [2023-11-06 21:56:05,801 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-06 21:56:05,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daff5255-8542-4235-9598-386438d2d7da/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2023-11-06 21:57:15,402 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2023-11-06 21:57:15,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:57:15,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 889 conjuncts, 67 conjunts are in the unsatisfiable core [2023-11-06 21:57:15,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:57:15,647 INFO L351 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 [2023-11-06 21:57:15,846 INFO L322 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-06 21:57:15,847 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-06 21:57:15,875 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-06 21:57:15,951 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-11-06 21:57:17,407 INFO L322 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-06 21:57:17,407 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-06 21:57:17,499 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2023-11-06 21:57:17,513 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2023-11-06 21:57:17,513 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:57:18,091 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3174 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_3174) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)))) is different from false [2023-11-06 21:57:18,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [115876123] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:57:18,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 21:57:18,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2023-11-06 21:57:18,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21282273] [2023-11-06 21:57:18,094 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 21:57:18,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 21:57:18,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:57:18,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 21:57:18,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=227, Unknown=2, NotChecked=30, Total=306 [2023-11-06 21:57:18,096 INFO L87 Difference]: Start difference. First operand 1969 states and 2615 transitions. Second operand has 14 states, 12 states have (on average 7.166666666666667) internal successors, (86), 12 states have internal predecessors, (86), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)