./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ec105877a5c5817dc7d6d5e780267dcadb379ad27281f7d8981115c8613ba085 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:47:36,164 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:47:36,263 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:47:36,271 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:47:36,272 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:47:36,303 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:47:36,304 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:47:36,305 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:47:36,306 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:47:36,306 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:47:36,307 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:47:36,308 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:47:36,308 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:47:36,309 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:47:36,310 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:47:36,310 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:47:36,311 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:47:36,311 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:47:36,312 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:47:36,312 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:47:36,313 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:47:36,314 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:47:36,314 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:47:36,315 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:47:36,315 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:47:36,316 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:47:36,316 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:47:36,317 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:47:36,318 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:47:36,318 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:47:36,319 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:47:36,319 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:47:36,320 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:47:36,320 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:47:36,321 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:47:36,322 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:47:36,322 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:47:36,323 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:47:36,323 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_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec105877a5c5817dc7d6d5e780267dcadb379ad27281f7d8981115c8613ba085 [2023-11-19 07:47:36,607 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:47:36,640 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:47:36,643 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:47:36,646 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:47:36,647 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:47:36,649 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-1.i [2023-11-19 07:47:39,866 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:47:40,241 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:47:40,241 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-1.i [2023-11-19 07:47:40,261 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/data/f1737d1a0/6af3514e7178482ab206ccaa8f1d6078/FLAG40038e5af [2023-11-19 07:47:40,284 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/data/f1737d1a0/6af3514e7178482ab206ccaa8f1d6078 [2023-11-19 07:47:40,292 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:47:40,295 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:47:40,298 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:47:40,300 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:47:40,306 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:47:40,309 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:40" (1/1) ... [2023-11-19 07:47:40,310 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b514081 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:40, skipping insertion in model container [2023-11-19 07:47:40,311 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:40" (1/1) ... [2023-11-19 07:47:40,414 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:47:40,980 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:47:41,000 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-19 07:47:41,001 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@48baef7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:41, skipping insertion in model container [2023-11-19 07:47:41,002 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:47:41,002 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 07:47:41,005 INFO L158 Benchmark]: Toolchain (without parser) took 708.63ms. Allocated memory is still 127.9MB. Free memory was 80.8MB in the beginning and 64.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 07:47:41,005 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 127.9MB. Free memory is still 71.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:47:41,006 INFO L158 Benchmark]: CACSL2BoogieTranslator took 703.87ms. Allocated memory is still 127.9MB. Free memory was 80.4MB in the beginning and 64.2MB in the end (delta: 16.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 07:47:41,008 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 127.9MB. Free memory is still 71.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 703.87ms. Allocated memory is still 127.9MB. Free memory was 80.4MB in the beginning and 64.2MB in the end (delta: 16.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 751]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ec105877a5c5817dc7d6d5e780267dcadb379ad27281f7d8981115c8613ba085 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:47:43,527 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:47:43,663 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-19 07:47:43,672 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:47:43,673 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:47:43,736 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:47:43,736 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:47:43,737 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:47:43,738 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:47:43,744 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:47:43,744 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:47:43,745 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:47:43,745 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:47:43,748 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:47:43,748 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:47:43,749 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:47:43,749 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:47:43,749 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:47:43,750 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:47:43,751 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:47:43,751 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:47:43,752 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:47:43,753 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:47:43,753 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 07:47:43,753 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 07:47:43,754 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:47:43,754 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:47:43,755 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:47:43,756 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:47:43,756 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:47:43,758 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:47:43,758 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:47:43,758 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:47:43,759 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:47:43,759 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-19 07:47:43,759 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 07:47:43,760 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:47:43,760 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:47:43,760 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:47:43,761 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-19 07:47:43,762 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:47:43,762 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_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec105877a5c5817dc7d6d5e780267dcadb379ad27281f7d8981115c8613ba085 [2023-11-19 07:47:44,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:47:44,261 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:47:44,265 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:47:44,267 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:47:44,267 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:47:44,269 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-1.i [2023-11-19 07:47:47,590 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:47:47,964 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:47:47,965 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-1.i [2023-11-19 07:47:48,003 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/data/fc0801138/7e3d25f8129e485984165cd458867088/FLAG6bdecf8ea [2023-11-19 07:47:48,017 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/data/fc0801138/7e3d25f8129e485984165cd458867088 [2023-11-19 07:47:48,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:47:48,022 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:47:48,024 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:47:48,024 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:47:48,030 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:47:48,031 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:48" (1/1) ... [2023-11-19 07:47:48,032 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f0659b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:48, skipping insertion in model container [2023-11-19 07:47:48,032 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:48" (1/1) ... [2023-11-19 07:47:48,104 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:47:48,695 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:47:48,711 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 07:47:48,723 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:47:48,816 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:47:48,822 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:47:48,914 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:47:48,984 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:47:48,985 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:48 WrapperNode [2023-11-19 07:47:48,985 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:47:48,987 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:47:48,987 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:47:48,987 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:47:48,996 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:48" (1/1) ... [2023-11-19 07:47:49,036 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:48" (1/1) ... [2023-11-19 07:47:49,118 INFO L138 Inliner]: procedures = 180, calls = 187, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 634 [2023-11-19 07:47:49,118 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:47:49,119 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:47:49,121 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:47:49,121 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:47:49,133 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:48" (1/1) ... [2023-11-19 07:47:49,133 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:48" (1/1) ... [2023-11-19 07:47:49,167 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:48" (1/1) ... [2023-11-19 07:47:49,167 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:48" (1/1) ... [2023-11-19 07:47:49,224 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:48" (1/1) ... [2023-11-19 07:47:49,233 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:48" (1/1) ... [2023-11-19 07:47:49,237 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:48" (1/1) ... [2023-11-19 07:47:49,241 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:48" (1/1) ... [2023-11-19 07:47:49,250 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:47:49,251 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:47:49,251 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:47:49,251 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:47:49,252 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:48" (1/1) ... [2023-11-19 07:47:49,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:47:49,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:49,297 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:47:49,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:47:49,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-19 07:47:49,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 07:47:49,352 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 07:47:49,353 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 07:47:49,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 07:47:49,354 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 07:47:49,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:47:49,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:47:49,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:47:49,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 07:47:49,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:47:49,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:47:49,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 07:47:49,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 07:47:49,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:47:49,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:47:49,612 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:47:49,614 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:47:49,617 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-19 07:47:53,109 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:47:53,143 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:47:53,151 INFO L302 CfgBuilder]: Removed 31 assume(true) statements. [2023-11-19 07:47:53,161 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:53 BoogieIcfgContainer [2023-11-19 07:47:53,162 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:47:53,164 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:47:53,164 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:47:53,167 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:47:53,167 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:47:48" (1/3) ... [2023-11-19 07:47:53,168 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c4073ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:47:53, skipping insertion in model container [2023-11-19 07:47:53,168 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:48" (2/3) ... [2023-11-19 07:47:53,169 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c4073ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:47:53, skipping insertion in model container [2023-11-19 07:47:53,169 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:53" (3/3) ... [2023-11-19 07:47:53,170 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test1-1.i [2023-11-19 07:47:53,187 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:47:53,188 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 330 error locations. [2023-11-19 07:47:53,252 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:47:53,259 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;@27670364, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:47:53,260 INFO L358 AbstractCegarLoop]: Starting to check reachability of 330 error locations. [2023-11-19 07:47:53,267 INFO L276 IsEmpty]: Start isEmpty. Operand has 673 states, 330 states have (on average 2.212121212121212) internal successors, (730), 667 states have internal predecessors, (730), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 07:47:53,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 07:47:53,275 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:53,276 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:47:53,276 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 07:47:53,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:53,283 INFO L85 PathProgramCache]: Analyzing trace with hash 37287509, now seen corresponding path program 1 times [2023-11-19 07:47:53,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:47:53,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1135306587] [2023-11-19 07:47:53,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:53,299 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:47:53,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:47:53,305 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:47:53,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-19 07:47:53,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:53,428 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:47:53,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:53,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:53,454 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:53,455 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:47:53,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1135306587] [2023-11-19 07:47:53,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1135306587] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:53,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:53,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:47:53,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811940984] [2023-11-19 07:47:53,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:53,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:47:53,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:47:53,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:47:53,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:47:53,514 INFO L87 Difference]: Start difference. First operand has 673 states, 330 states have (on average 2.212121212121212) internal successors, (730), 667 states have internal predecessors, (730), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:53,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:53,613 INFO L93 Difference]: Finished difference Result 663 states and 709 transitions. [2023-11-19 07:47:53,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:47:53,616 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-19 07:47:53,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:53,637 INFO L225 Difference]: With dead ends: 663 [2023-11-19 07:47:53,637 INFO L226 Difference]: Without dead ends: 661 [2023-11-19 07:47:53,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:47:53,642 INFO L413 NwaCegarLoop]: 709 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:53,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:47:53,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2023-11-19 07:47:53,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 661. [2023-11-19 07:47:53,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 324 states have (on average 2.1018518518518516) internal successors, (681), 655 states have internal predecessors, (681), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 07:47:53,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 707 transitions. [2023-11-19 07:47:53,766 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 707 transitions. Word has length 5 [2023-11-19 07:47:53,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:53,767 INFO L495 AbstractCegarLoop]: Abstraction has 661 states and 707 transitions. [2023-11-19 07:47:53,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:53,768 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 707 transitions. [2023-11-19 07:47:53,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 07:47:53,769 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:53,769 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:47:53,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:53,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:47:53,972 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 07:47:53,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:53,973 INFO L85 PathProgramCache]: Analyzing trace with hash 37287571, now seen corresponding path program 1 times [2023-11-19 07:47:53,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:47:53,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2104753802] [2023-11-19 07:47:53,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:53,974 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:47:53,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:47:53,980 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:47:54,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-19 07:47:54,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:54,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:47:54,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:54,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-19 07:47:54,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:54,224 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:54,225 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:47:54,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2104753802] [2023-11-19 07:47:54,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2104753802] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:54,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:54,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:47:54,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904599352] [2023-11-19 07:47:54,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:54,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:54,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:47:54,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:54,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:54,238 INFO L87 Difference]: Start difference. First operand 661 states and 707 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:55,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:55,913 INFO L93 Difference]: Finished difference Result 622 states and 669 transitions. [2023-11-19 07:47:55,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:55,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-19 07:47:55,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:55,920 INFO L225 Difference]: With dead ends: 622 [2023-11-19 07:47:55,920 INFO L226 Difference]: Without dead ends: 622 [2023-11-19 07:47:55,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:55,922 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 598 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:55,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [611 Valid, 358 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-19 07:47:55,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2023-11-19 07:47:55,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 612. [2023-11-19 07:47:55,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 324 states have (on average 1.9506172839506173) internal successors, (632), 606 states have internal predecessors, (632), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 07:47:55,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 658 transitions. [2023-11-19 07:47:55,951 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 658 transitions. Word has length 5 [2023-11-19 07:47:55,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:55,951 INFO L495 AbstractCegarLoop]: Abstraction has 612 states and 658 transitions. [2023-11-19 07:47:55,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:55,952 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 658 transitions. [2023-11-19 07:47:55,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 07:47:55,952 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:55,953 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:47:55,957 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-19 07:47:56,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:47:56,155 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 07:47:56,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:56,156 INFO L85 PathProgramCache]: Analyzing trace with hash 37287572, now seen corresponding path program 1 times [2023-11-19 07:47:56,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:47:56,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [761478838] [2023-11-19 07:47:56,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:56,157 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:47:56,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:47:56,160 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:47:56,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-19 07:47:56,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:56,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:47:56,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:56,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-19 07:47:56,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:56,291 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:56,291 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:47:56,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [761478838] [2023-11-19 07:47:56,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [761478838] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:56,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:56,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:47:56,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351260576] [2023-11-19 07:47:56,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:56,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:56,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:47:56,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:56,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:56,293 INFO L87 Difference]: Start difference. First operand 612 states and 658 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:58,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:58,132 INFO L93 Difference]: Finished difference Result 682 states and 732 transitions. [2023-11-19 07:47:58,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:58,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-19 07:47:58,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:58,138 INFO L225 Difference]: With dead ends: 682 [2023-11-19 07:47:58,138 INFO L226 Difference]: Without dead ends: 682 [2023-11-19 07:47:58,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:58,140 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 258 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:58,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 757 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-19 07:47:58,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2023-11-19 07:47:58,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 634. [2023-11-19 07:47:58,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 356 states have (on average 1.9325842696629214) internal successors, (688), 628 states have internal predecessors, (688), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 07:47:58,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 714 transitions. [2023-11-19 07:47:58,164 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 714 transitions. Word has length 5 [2023-11-19 07:47:58,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:58,165 INFO L495 AbstractCegarLoop]: Abstraction has 634 states and 714 transitions. [2023-11-19 07:47:58,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:58,165 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 714 transitions. [2023-11-19 07:47:58,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 07:47:58,166 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:58,166 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:47:58,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:58,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:47:58,368 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr322REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 07:47:58,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:58,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1156737092, now seen corresponding path program 1 times [2023-11-19 07:47:58,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:47:58,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1068573665] [2023-11-19 07:47:58,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:58,370 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:47:58,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:47:58,372 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:47:58,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-19 07:47:58,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:58,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:47:58,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:58,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:58,477 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:58,477 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:47:58,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1068573665] [2023-11-19 07:47:58,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1068573665] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:58,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:58,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:47:58,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583250236] [2023-11-19 07:47:58,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:58,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:58,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:47:58,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:58,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:58,490 INFO L87 Difference]: Start difference. First operand 634 states and 714 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:58,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:58,591 INFO L93 Difference]: Finished difference Result 1218 states and 1358 transitions. [2023-11-19 07:47:58,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:58,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-19 07:47:58,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:58,603 INFO L225 Difference]: With dead ends: 1218 [2023-11-19 07:47:58,603 INFO L226 Difference]: Without dead ends: 1218 [2023-11-19 07:47:58,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:58,604 INFO L413 NwaCegarLoop]: 865 mSDtfsCounter, 571 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 1507 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:58,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 1507 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:47:58,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2023-11-19 07:47:58,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 635. [2023-11-19 07:47:58,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 357 states have (on average 1.9299719887955182) internal successors, (689), 629 states have internal predecessors, (689), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 07:47:58,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 715 transitions. [2023-11-19 07:47:58,633 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 715 transitions. Word has length 6 [2023-11-19 07:47:58,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:58,633 INFO L495 AbstractCegarLoop]: Abstraction has 635 states and 715 transitions. [2023-11-19 07:47:58,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:58,633 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 715 transitions. [2023-11-19 07:47:58,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 07:47:58,634 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:58,634 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:58,637 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-11-19 07:47:58,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:47:58,836 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 07:47:58,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:58,837 INFO L85 PathProgramCache]: Analyzing trace with hash 334651453, now seen corresponding path program 1 times [2023-11-19 07:47:58,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:47:58,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2080020331] [2023-11-19 07:47:58,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:58,839 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:47:58,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:47:58,840 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:47:58,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-19 07:47:58,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:58,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:47:58,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:58,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:58,985 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:58,985 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:47:58,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2080020331] [2023-11-19 07:47:58,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2080020331] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:58,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:58,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:47:58,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806774761] [2023-11-19 07:47:58,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:58,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:58,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:47:58,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:58,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:58,988 INFO L87 Difference]: Start difference. First operand 635 states and 715 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:59,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:59,028 INFO L93 Difference]: Finished difference Result 593 states and 672 transitions. [2023-11-19 07:47:59,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:59,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-19 07:47:59,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:59,040 INFO L225 Difference]: With dead ends: 593 [2023-11-19 07:47:59,040 INFO L226 Difference]: Without dead ends: 593 [2023-11-19 07:47:59,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:59,043 INFO L413 NwaCegarLoop]: 593 mSDtfsCounter, 81 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 1114 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 [2023-11-19 07:47:59,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 1114 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:47:59,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2023-11-19 07:47:59,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2023-11-19 07:47:59,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 339 states have (on average 1.9056047197640118) internal successors, (646), 587 states have internal predecessors, (646), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 07:47:59,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 672 transitions. [2023-11-19 07:47:59,071 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 672 transitions. Word has length 11 [2023-11-19 07:47:59,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:59,071 INFO L495 AbstractCegarLoop]: Abstraction has 593 states and 672 transitions. [2023-11-19 07:47:59,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:59,072 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 672 transitions. [2023-11-19 07:47:59,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 07:47:59,072 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:59,072 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:59,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:59,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:47:59,276 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 07:47:59,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:59,276 INFO L85 PathProgramCache]: Analyzing trace with hash -522505033, now seen corresponding path program 1 times [2023-11-19 07:47:59,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:47:59,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1421687264] [2023-11-19 07:47:59,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:59,277 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:47:59,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:47:59,278 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:47:59,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-19 07:47:59,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:59,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:47:59,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:59,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:59,490 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:59,490 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:47:59,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1421687264] [2023-11-19 07:47:59,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1421687264] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:59,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:59,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:47:59,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933899033] [2023-11-19 07:47:59,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:59,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:47:59,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:47:59,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:47:59,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:47:59,493 INFO L87 Difference]: Start difference. First operand 593 states and 672 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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) [2023-11-19 07:47:59,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:59,627 INFO L93 Difference]: Finished difference Result 572 states and 644 transitions. [2023-11-19 07:47:59,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:47:59,628 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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 [2023-11-19 07:47:59,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:59,632 INFO L225 Difference]: With dead ends: 572 [2023-11-19 07:47:59,633 INFO L226 Difference]: Without dead ends: 572 [2023-11-19 07:47:59,633 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 [2023-11-19 07:47:59,634 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 62 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1610 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 [2023-11-19 07:47:59,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 1610 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:47:59,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2023-11-19 07:47:59,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 571. [2023-11-19 07:47:59,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 331 states have (on average 1.86404833836858) internal successors, (617), 565 states have internal predecessors, (617), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 07:47:59,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 643 transitions. [2023-11-19 07:47:59,660 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 643 transitions. Word has length 13 [2023-11-19 07:47:59,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:59,660 INFO L495 AbstractCegarLoop]: Abstraction has 571 states and 643 transitions. [2023-11-19 07:47:59,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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) [2023-11-19 07:47:59,661 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 643 transitions. [2023-11-19 07:47:59,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 07:47:59,664 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:59,664 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:59,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:59,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:47:59,868 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 07:47:59,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:59,869 INFO L85 PathProgramCache]: Analyzing trace with hash -22216187, now seen corresponding path program 1 times [2023-11-19 07:47:59,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:47:59,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1598853968] [2023-11-19 07:47:59,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:59,872 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:47:59,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:47:59,874 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:47:59,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-19 07:48:00,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:00,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:48:00,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:00,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-19 07:48:00,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:00,203 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:48:00,203 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:48:00,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1598853968] [2023-11-19 07:48:00,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1598853968] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:00,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:00,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:48:00,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556407690] [2023-11-19 07:48:00,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:00,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:48:00,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:48:00,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:48:00,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:48:00,207 INFO L87 Difference]: Start difference. First operand 571 states and 643 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:02,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:02,425 INFO L93 Difference]: Finished difference Result 577 states and 650 transitions. [2023-11-19 07:48:02,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:48:02,426 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-11-19 07:48:02,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:02,431 INFO L225 Difference]: With dead ends: 577 [2023-11-19 07:48:02,432 INFO L226 Difference]: Without dead ends: 577 [2023-11-19 07:48:02,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:48:02,433 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 527 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:02,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [540 Valid, 533 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-19 07:48:02,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2023-11-19 07:48:02,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 567. [2023-11-19 07:48:02,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 331 states have (on average 1.851963746223565) internal successors, (613), 561 states have internal predecessors, (613), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 07:48:02,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 639 transitions. [2023-11-19 07:48:02,459 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 639 transitions. Word has length 27 [2023-11-19 07:48:02,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:02,460 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 639 transitions. [2023-11-19 07:48:02,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:02,461 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 639 transitions. [2023-11-19 07:48:02,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 07:48:02,463 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:02,463 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:02,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:02,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:48:02,666 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 07:48:02,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:02,667 INFO L85 PathProgramCache]: Analyzing trace with hash -22216186, now seen corresponding path program 1 times [2023-11-19 07:48:02,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:48:02,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1085007038] [2023-11-19 07:48:02,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:02,668 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:48:02,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:48:02,669 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:48:02,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-19 07:48:02,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:02,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:48:02,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:02,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-19 07:48:03,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:03,227 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:48:03,227 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:48:03,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1085007038] [2023-11-19 07:48:03,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1085007038] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:03,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:03,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:48:03,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408317062] [2023-11-19 07:48:03,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:03,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:48:03,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:48:03,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:48:03,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:48:03,230 INFO L87 Difference]: Start difference. First operand 567 states and 639 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:05,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:05,641 INFO L93 Difference]: Finished difference Result 611 states and 653 transitions. [2023-11-19 07:48:05,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:48:05,642 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-11-19 07:48:05,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:05,646 INFO L225 Difference]: With dead ends: 611 [2023-11-19 07:48:05,647 INFO L226 Difference]: Without dead ends: 611 [2023-11-19 07:48:05,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:48:05,648 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 189 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:05,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 963 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-19 07:48:05,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2023-11-19 07:48:05,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 563. [2023-11-19 07:48:05,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 331 states have (on average 1.8398791540785497) internal successors, (609), 557 states have internal predecessors, (609), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 07:48:05,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 635 transitions. [2023-11-19 07:48:05,671 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 635 transitions. Word has length 27 [2023-11-19 07:48:05,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:05,671 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 635 transitions. [2023-11-19 07:48:05,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:05,672 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 635 transitions. [2023-11-19 07:48:05,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-19 07:48:05,673 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:05,674 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] [2023-11-19 07:48:05,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:05,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:48:05,882 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 07:48:05,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:05,882 INFO L85 PathProgramCache]: Analyzing trace with hash -125948801, now seen corresponding path program 1 times [2023-11-19 07:48:05,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:48:05,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [671691236] [2023-11-19 07:48:05,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:05,883 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:48:05,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:48:05,884 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:48:05,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-19 07:48:06,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:06,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:48:06,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:06,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:06,182 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:48:06,183 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:48:06,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [671691236] [2023-11-19 07:48:06,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [671691236] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:06,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:06,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:48:06,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717141012] [2023-11-19 07:48:06,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:06,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:48:06,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:48:06,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:48:06,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:48:06,185 INFO L87 Difference]: Start difference. First operand 563 states and 635 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:06,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:06,249 INFO L93 Difference]: Finished difference Result 557 states and 625 transitions. [2023-11-19 07:48:06,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:48:06,250 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 43 [2023-11-19 07:48:06,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:06,254 INFO L225 Difference]: With dead ends: 557 [2023-11-19 07:48:06,254 INFO L226 Difference]: Without dead ends: 557 [2023-11-19 07:48:06,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:48:06,255 INFO L413 NwaCegarLoop]: 542 mSDtfsCounter, 31 mSDsluCounter, 1046 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 1588 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 [2023-11-19 07:48:06,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 1588 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:48:06,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2023-11-19 07:48:06,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2023-11-19 07:48:06,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 325 states have (on average 1.843076923076923) internal successors, (599), 551 states have internal predecessors, (599), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 07:48:06,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 625 transitions. [2023-11-19 07:48:06,271 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 625 transitions. Word has length 43 [2023-11-19 07:48:06,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:06,272 INFO L495 AbstractCegarLoop]: Abstraction has 557 states and 625 transitions. [2023-11-19 07:48:06,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:06,272 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 625 transitions. [2023-11-19 07:48:06,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-19 07:48:06,274 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:06,274 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:06,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-11-19 07:48:06,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:48:06,478 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 07:48:06,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:06,479 INFO L85 PathProgramCache]: Analyzing trace with hash 796373579, now seen corresponding path program 1 times [2023-11-19 07:48:06,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:48:06,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [608896775] [2023-11-19 07:48:06,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:06,480 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:48:06,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:48:06,481 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:48:06,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-19 07:48:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:06,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:48:06,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:07,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:07,030 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:48:07,030 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:48:07,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [608896775] [2023-11-19 07:48:07,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [608896775] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:07,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:07,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:48:07,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676975780] [2023-11-19 07:48:07,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:07,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:48:07,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:48:07,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:48:07,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:48:07,033 INFO L87 Difference]: Start difference. First operand 557 states and 625 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:07,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:07,149 INFO L93 Difference]: Finished difference Result 604 states and 672 transitions. [2023-11-19 07:48:07,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:48:07,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-11-19 07:48:07,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:07,154 INFO L225 Difference]: With dead ends: 604 [2023-11-19 07:48:07,154 INFO L226 Difference]: Without dead ends: 604 [2023-11-19 07:48:07,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:48:07,155 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 67 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1018 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 [2023-11-19 07:48:07,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 1018 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:48:07,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2023-11-19 07:48:07,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 604. [2023-11-19 07:48:07,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 372 states have (on average 1.7365591397849462) internal successors, (646), 598 states have internal predecessors, (646), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 07:48:07,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 672 transitions. [2023-11-19 07:48:07,172 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 672 transitions. Word has length 51 [2023-11-19 07:48:07,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:07,173 INFO L495 AbstractCegarLoop]: Abstraction has 604 states and 672 transitions. [2023-11-19 07:48:07,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:07,173 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 672 transitions. [2023-11-19 07:48:07,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-19 07:48:07,175 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:07,175 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:07,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:07,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:48:07,380 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 07:48:07,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:07,381 INFO L85 PathProgramCache]: Analyzing trace with hash -741532885, now seen corresponding path program 1 times [2023-11-19 07:48:07,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:48:07,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [955773008] [2023-11-19 07:48:07,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:07,382 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:48:07,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:48:07,383 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:48:07,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-19 07:48:07,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:07,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:48:07,718 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:07,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-19 07:48:07,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-19 07:48:08,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:48:08,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-19 07:48:08,444 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-19 07:48:08,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-19 07:48:08,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:08,461 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:48:08,461 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:48:08,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [955773008] [2023-11-19 07:48:08,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [955773008] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:08,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:08,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:48:08,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638116895] [2023-11-19 07:48:08,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:08,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:48:08,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:48:08,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:48:08,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:48:08,464 INFO L87 Difference]: Start difference. First operand 604 states and 672 transitions. Second operand has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:09,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:09,929 INFO L93 Difference]: Finished difference Result 576 states and 645 transitions. [2023-11-19 07:48:09,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:48:09,930 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-11-19 07:48:09,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:09,933 INFO L225 Difference]: With dead ends: 576 [2023-11-19 07:48:09,934 INFO L226 Difference]: Without dead ends: 576 [2023-11-19 07:48:09,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:48:09,935 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 399 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:09,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 321 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-19 07:48:09,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2023-11-19 07:48:09,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 534. [2023-11-19 07:48:09,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 340 states have (on average 1.5941176470588236) internal successors, (542), 528 states have internal predecessors, (542), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 07:48:09,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 568 transitions. [2023-11-19 07:48:09,949 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 568 transitions. Word has length 54 [2023-11-19 07:48:09,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:09,950 INFO L495 AbstractCegarLoop]: Abstraction has 534 states and 568 transitions. [2023-11-19 07:48:09,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:09,950 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 568 transitions. [2023-11-19 07:48:09,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-19 07:48:09,951 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:09,952 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] [2023-11-19 07:48:09,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:10,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:48:10,163 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 07:48:10,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:10,163 INFO L85 PathProgramCache]: Analyzing trace with hash -313883618, now seen corresponding path program 1 times [2023-11-19 07:48:10,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:48:10,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [231571567] [2023-11-19 07:48:10,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:10,164 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:48:10,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:48:10,165 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:48:10,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-19 07:48:10,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:10,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:48:10,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:10,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-19 07:48:10,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-19 07:48:10,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-19 07:48:10,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:10,537 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:48:10,537 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:48:10,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [231571567] [2023-11-19 07:48:10,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [231571567] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:10,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:10,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:48:10,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241917248] [2023-11-19 07:48:10,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:10,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:48:10,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:48:10,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:48:10,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:48:10,540 INFO L87 Difference]: Start difference. First operand 534 states and 568 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:12,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:12,538 INFO L93 Difference]: Finished difference Result 533 states and 567 transitions. [2023-11-19 07:48:12,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:48:12,539 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 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 59 [2023-11-19 07:48:12,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:12,542 INFO L225 Difference]: With dead ends: 533 [2023-11-19 07:48:12,543 INFO L226 Difference]: Without dead ends: 533 [2023-11-19 07:48:12,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:48:12,544 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 4 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1337 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:12,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1337 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-19 07:48:12,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2023-11-19 07:48:12,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 533. [2023-11-19 07:48:12,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 340 states have (on average 1.5911764705882352) internal successors, (541), 527 states have internal predecessors, (541), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 07:48:12,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 567 transitions. [2023-11-19 07:48:12,558 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 567 transitions. Word has length 59 [2023-11-19 07:48:12,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:12,559 INFO L495 AbstractCegarLoop]: Abstraction has 533 states and 567 transitions. [2023-11-19 07:48:12,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:12,559 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 567 transitions. [2023-11-19 07:48:12,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-19 07:48:12,560 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:12,560 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] [2023-11-19 07:48:12,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:12,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:48:12,765 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 07:48:12,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:12,766 INFO L85 PathProgramCache]: Analyzing trace with hash -313883617, now seen corresponding path program 1 times [2023-11-19 07:48:12,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:48:12,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1559980397] [2023-11-19 07:48:12,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:12,767 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:48:12,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:48:12,768 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:48:12,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-19 07:48:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:13,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 07:48:13,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:13,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-19 07:48:13,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-19 07:48:13,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-19 07:48:13,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-11-19 07:48:13,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:13,167 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:48:13,168 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:48:13,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1559980397] [2023-11-19 07:48:13,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1559980397] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:13,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:13,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:48:13,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521692847] [2023-11-19 07:48:13,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:13,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:48:13,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:48:13,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:48:13,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:48:13,171 INFO L87 Difference]: Start difference. First operand 533 states and 567 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:15,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:15,476 INFO L93 Difference]: Finished difference Result 532 states and 566 transitions. [2023-11-19 07:48:15,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:48:15,477 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 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 59 [2023-11-19 07:48:15,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:15,479 INFO L225 Difference]: With dead ends: 532 [2023-11-19 07:48:15,479 INFO L226 Difference]: Without dead ends: 532 [2023-11-19 07:48:15,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:48:15,480 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 2 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:15,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1347 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-19 07:48:15,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2023-11-19 07:48:15,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 532. [2023-11-19 07:48:15,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 339 states have (on average 1.592920353982301) internal successors, (540), 526 states have internal predecessors, (540), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 07:48:15,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 566 transitions. [2023-11-19 07:48:15,495 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 566 transitions. Word has length 59 [2023-11-19 07:48:15,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:15,495 INFO L495 AbstractCegarLoop]: Abstraction has 532 states and 566 transitions. [2023-11-19 07:48:15,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:15,496 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 566 transitions. [2023-11-19 07:48:15,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-19 07:48:15,497 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:15,497 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] [2023-11-19 07:48:15,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-11-19 07:48:15,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:48:15,702 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 07:48:15,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:15,703 INFO L85 PathProgramCache]: Analyzing trace with hash -713533659, now seen corresponding path program 1 times [2023-11-19 07:48:15,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:48:15,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1014406356] [2023-11-19 07:48:15,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:15,704 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:48:15,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:48:15,705 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:48:15,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-19 07:48:15,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:15,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:48:15,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:16,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:16,027 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:48:16,027 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:48:16,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1014406356] [2023-11-19 07:48:16,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1014406356] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:16,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:16,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:48:16,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582100183] [2023-11-19 07:48:16,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:16,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:48:16,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:48:16,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:48:16,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:48:16,030 INFO L87 Difference]: Start difference. First operand 532 states and 566 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2023-11-19 07:48:16,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:16,078 INFO L93 Difference]: Finished difference Result 535 states and 570 transitions. [2023-11-19 07:48:16,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:48:16,080 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 67 [2023-11-19 07:48:16,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:16,083 INFO L225 Difference]: With dead ends: 535 [2023-11-19 07:48:16,083 INFO L226 Difference]: Without dead ends: 535 [2023-11-19 07:48:16,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:48:16,085 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 2 mSDsluCounter, 1025 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:16,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1540 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:48:16,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2023-11-19 07:48:16,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 535. [2023-11-19 07:48:16,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 341 states have (on average 1.5923753665689149) internal successors, (543), 529 states have internal predecessors, (543), 13 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-19 07:48:16,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 570 transitions. [2023-11-19 07:48:16,102 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 570 transitions. Word has length 67 [2023-11-19 07:48:16,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:16,103 INFO L495 AbstractCegarLoop]: Abstraction has 535 states and 570 transitions. [2023-11-19 07:48:16,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2023-11-19 07:48:16,104 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 570 transitions. [2023-11-19 07:48:16,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-19 07:48:16,105 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:16,105 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] [2023-11-19 07:48:16,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:16,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:48:16,311 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 07:48:16,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:16,312 INFO L85 PathProgramCache]: Analyzing trace with hash 930817922, now seen corresponding path program 1 times [2023-11-19 07:48:16,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:48:16,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [728320413] [2023-11-19 07:48:16,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:16,312 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:48:16,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:48:16,313 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:48:16,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-19 07:48:16,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:16,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:48:16,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:16,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:16,625 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:48:16,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:16,750 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:48:16,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [728320413] [2023-11-19 07:48:16,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [728320413] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:48:16,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:48:16,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-19 07:48:16,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815945268] [2023-11-19 07:48:16,751 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:48:16,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:48:16,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:48:16,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:48:16,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:48:16,753 INFO L87 Difference]: Start difference. First operand 535 states and 570 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:48:16,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:16,955 INFO L93 Difference]: Finished difference Result 547 states and 587 transitions. [2023-11-19 07:48:16,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:48:16,956 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 68 [2023-11-19 07:48:16,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:16,960 INFO L225 Difference]: With dead ends: 547 [2023-11-19 07:48:16,960 INFO L226 Difference]: Without dead ends: 547 [2023-11-19 07:48:16,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:48:16,961 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 10 mSDsluCounter, 1028 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1544 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:16,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1544 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:48:16,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2023-11-19 07:48:16,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 545. [2023-11-19 07:48:16,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 350 states have (on average 1.5942857142857143) internal successors, (558), 538 states have internal predecessors, (558), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-19 07:48:16,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 585 transitions. [2023-11-19 07:48:16,982 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 585 transitions. Word has length 68 [2023-11-19 07:48:16,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:16,982 INFO L495 AbstractCegarLoop]: Abstraction has 545 states and 585 transitions. [2023-11-19 07:48:16,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:48:16,983 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 585 transitions. [2023-11-19 07:48:16,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-19 07:48:16,984 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:16,984 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] [2023-11-19 07:48:16,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:17,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:48:17,191 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 07:48:17,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:17,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1479014811, now seen corresponding path program 2 times [2023-11-19 07:48:17,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:48:17,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1196673723] [2023-11-19 07:48:17,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:48:17,192 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:48:17,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:48:17,193 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:48:17,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-11-19 07:48:17,607 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:48:17,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:48:17,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:48:17,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:17,703 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:17,703 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:48:17,977 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:17,978 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:48:17,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1196673723] [2023-11-19 07:48:17,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1196673723] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:48:17,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:48:17,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-19 07:48:17,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406395234] [2023-11-19 07:48:17,979 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:48:17,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:48:17,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:48:17,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:48:17,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:48:17,981 INFO L87 Difference]: Start difference. First operand 545 states and 585 transitions. Second operand has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 14 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:48:18,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:18,859 INFO L93 Difference]: Finished difference Result 566 states and 614 transitions. [2023-11-19 07:48:18,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-19 07:48:18,860 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 14 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 71 [2023-11-19 07:48:18,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:18,862 INFO L225 Difference]: With dead ends: 566 [2023-11-19 07:48:18,863 INFO L226 Difference]: Without dead ends: 560 [2023-11-19 07:48:18,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=217, Invalid=383, Unknown=0, NotChecked=0, Total=600 [2023-11-19 07:48:18,864 INFO L413 NwaCegarLoop]: 518 mSDtfsCounter, 24 mSDsluCounter, 3589 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 4107 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:18,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 4107 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:48:18,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2023-11-19 07:48:18,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 554. [2023-11-19 07:48:18,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 359 states have (on average 1.584958217270195) internal successors, (569), 547 states have internal predecessors, (569), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-19 07:48:18,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 596 transitions. [2023-11-19 07:48:18,881 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 596 transitions. Word has length 71 [2023-11-19 07:48:18,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:18,882 INFO L495 AbstractCegarLoop]: Abstraction has 554 states and 596 transitions. [2023-11-19 07:48:18,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 14 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:48:18,882 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 596 transitions. [2023-11-19 07:48:18,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-19 07:48:18,883 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:18,883 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] [2023-11-19 07:48:18,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:19,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:48:19,090 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 07:48:19,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:19,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1171095227, now seen corresponding path program 3 times [2023-11-19 07:48:19,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:48:19,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [812702917] [2023-11-19 07:48:19,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 07:48:19,091 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:48:19,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:48:19,092 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:48:19,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-19 07:48:19,737 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-19 07:48:19,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:48:19,753 INFO L262 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-19 07:48:19,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:19,957 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:19,957 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:48:20,714 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:20,714 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:48:20,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [812702917] [2023-11-19 07:48:20,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [812702917] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:48:20,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:48:20,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-11-19 07:48:20,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58762813] [2023-11-19 07:48:20,715 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:48:20,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-19 07:48:20,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:48:20,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-19 07:48:20,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2023-11-19 07:48:20,717 INFO L87 Difference]: Start difference. First operand 554 states and 596 transitions. Second operand has 26 states, 26 states have (on average 3.3846153846153846) internal successors, (88), 26 states have internal predecessors, (88), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:48:23,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:23,536 INFO L93 Difference]: Finished difference Result 594 states and 658 transitions. [2023-11-19 07:48:23,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-19 07:48:23,537 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3846153846153846) internal successors, (88), 26 states have internal predecessors, (88), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 77 [2023-11-19 07:48:23,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:23,540 INFO L225 Difference]: With dead ends: 594 [2023-11-19 07:48:23,540 INFO L226 Difference]: Without dead ends: 588 [2023-11-19 07:48:23,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=793, Invalid=1559, Unknown=0, NotChecked=0, Total=2352 [2023-11-19 07:48:23,542 INFO L413 NwaCegarLoop]: 523 mSDtfsCounter, 54 mSDsluCounter, 6218 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 6741 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:23,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 6741 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-19 07:48:23,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2023-11-19 07:48:23,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 572. [2023-11-19 07:48:23,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 377 states have (on average 1.570291777188329) internal successors, (592), 565 states have internal predecessors, (592), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-19 07:48:23,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 619 transitions. [2023-11-19 07:48:23,562 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 619 transitions. Word has length 77 [2023-11-19 07:48:23,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:23,562 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 619 transitions. [2023-11-19 07:48:23,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3846153846153846) internal successors, (88), 26 states have internal predecessors, (88), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:48:23,563 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 619 transitions. [2023-11-19 07:48:23,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-19 07:48:23,564 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:23,564 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] [2023-11-19 07:48:23,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:23,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:48:23,773 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 07:48:23,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:23,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1579778299, now seen corresponding path program 4 times [2023-11-19 07:48:23,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:48:23,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [976025436] [2023-11-19 07:48:23,774 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 07:48:23,774 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:48:23,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:48:23,775 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:48:23,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fcc32f2-cb76-4e26-b177-59605ddb4505/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-11-19 07:48:24,169 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 07:48:24,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:48:24,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-19 07:48:24,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:24,742 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:24,742 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:48:26,957 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:26,957 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:48:26,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [976025436] [2023-11-19 07:48:26,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [976025436] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:48:26,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:48:26,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2023-11-19 07:48:26,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219519687] [2023-11-19 07:48:26,958 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:48:26,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-19 07:48:26,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:48:26,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-19 07:48:26,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=672, Invalid=1778, Unknown=0, NotChecked=0, Total=2450 [2023-11-19 07:48:26,962 INFO L87 Difference]: Start difference. First operand 572 states and 619 transitions. Second operand has 50 states, 50 states have (on average 2.24) internal successors, (112), 50 states have internal predecessors, (112), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)