./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 527bcce2 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_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 11cd0b9da22b48a523bf90b6f5cbc98a0e4e6a8f70a83fae3d817f12f25f212c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 20:59:02,951 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 20:59:03,026 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-21 20:59:03,032 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 20:59:03,032 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 20:59:03,061 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 20:59:03,062 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 20:59:03,063 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 20:59:03,064 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 20:59:03,064 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 20:59:03,065 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 20:59:03,066 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 20:59:03,067 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 20:59:03,067 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 20:59:03,068 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 20:59:03,069 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 20:59:03,069 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 20:59:03,070 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 20:59:03,070 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 20:59:03,071 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 20:59:03,072 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 20:59:03,072 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 20:59:03,073 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 20:59:03,073 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 20:59:03,074 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 20:59:03,074 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 20:59:03,075 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 20:59:03,075 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 20:59:03,076 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 20:59:03,076 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 20:59:03,077 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 20:59:03,078 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 20:59:03,078 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 20:59:03,079 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 20:59:03,079 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 20:59:03,080 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 20:59:03,080 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 20:59:03,081 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 20:59:03,081 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 20:59:03,082 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_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 11cd0b9da22b48a523bf90b6f5cbc98a0e4e6a8f70a83fae3d817f12f25f212c [2023-11-21 20:59:03,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 20:59:03,414 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 20:59:03,417 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 20:59:03,420 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 20:59:03,422 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 20:59:03,423 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-2.i [2023-11-21 20:59:06,595 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 20:59:06,950 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 20:59:06,951 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-2.i [2023-11-21 20:59:06,968 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/data/b5b7c8b3c/0eb2131d248a422f82a684c883708292/FLAGddc4a1e32 [2023-11-21 20:59:06,984 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/data/b5b7c8b3c/0eb2131d248a422f82a684c883708292 [2023-11-21 20:59:06,989 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 20:59:06,990 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 20:59:06,992 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 20:59:06,992 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 20:59:07,004 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 20:59:07,005 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:59:06" (1/1) ... [2023-11-21 20:59:07,007 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c28dd2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:07, skipping insertion in model container [2023-11-21 20:59:07,007 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:59:06" (1/1) ... [2023-11-21 20:59:07,088 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 20:59:07,502 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 20:59:07,522 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-21 20:59:07,523 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@675504cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:07, skipping insertion in model container [2023-11-21 20:59:07,523 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 20:59:07,523 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-21 20:59:07,525 INFO L158 Benchmark]: Toolchain (without parser) took 534.07ms. Allocated memory is still 163.6MB. Free memory was 123.9MB in the beginning and 109.9MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-21 20:59:07,526 INFO L158 Benchmark]: CDTParser took 0.99ms. Allocated memory is still 127.9MB. Free memory is still 74.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 20:59:07,527 INFO L158 Benchmark]: CACSL2BoogieTranslator took 531.31ms. Allocated memory is still 163.6MB. Free memory was 123.4MB in the beginning and 109.9MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-21 20:59:07,528 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.99ms. Allocated memory is still 127.9MB. Free memory is still 74.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 531.31ms. Allocated memory is still 163.6MB. Free memory was 123.4MB in the beginning and 109.9MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: 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_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 11cd0b9da22b48a523bf90b6f5cbc98a0e4e6a8f70a83fae3d817f12f25f212c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 20:59:10,061 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 20:59:10,202 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-21 20:59:10,211 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 20:59:10,212 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 20:59:10,259 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 20:59:10,260 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 20:59:10,261 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 20:59:10,262 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 20:59:10,267 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 20:59:10,268 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 20:59:10,268 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 20:59:10,269 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 20:59:10,271 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 20:59:10,271 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 20:59:10,272 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 20:59:10,272 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 20:59:10,272 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 20:59:10,273 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 20:59:10,273 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 20:59:10,274 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 20:59:10,274 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 20:59:10,275 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 20:59:10,275 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 20:59:10,276 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 20:59:10,276 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 20:59:10,276 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 20:59:10,277 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 20:59:10,278 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 20:59:10,278 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 20:59:10,279 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 20:59:10,280 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 20:59:10,280 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 20:59:10,281 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 20:59:10,281 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 20:59:10,281 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-21 20:59:10,281 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 20:59:10,282 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 20:59:10,282 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 20:59:10,283 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 20:59:10,283 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 20:59:10,284 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-21 20:59:10,284 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_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 11cd0b9da22b48a523bf90b6f5cbc98a0e4e6a8f70a83fae3d817f12f25f212c [2023-11-21 20:59:10,797 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 20:59:10,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 20:59:10,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 20:59:10,837 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 20:59:10,838 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 20:59:10,839 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-2.i [2023-11-21 20:59:14,136 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 20:59:14,581 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 20:59:14,584 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-2.i [2023-11-21 20:59:14,610 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/data/2b69f6ae1/ea020326b19d4d2b99fb6f0848b4f06d/FLAG0d022ade1 [2023-11-21 20:59:14,632 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/data/2b69f6ae1/ea020326b19d4d2b99fb6f0848b4f06d [2023-11-21 20:59:14,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 20:59:14,639 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 20:59:14,643 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 20:59:14,643 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 20:59:14,649 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 20:59:14,649 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:59:14" (1/1) ... [2023-11-21 20:59:14,651 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f64e0f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:14, skipping insertion in model container [2023-11-21 20:59:14,651 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:59:14" (1/1) ... [2023-11-21 20:59:14,721 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 20:59:15,342 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 20:59:15,376 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-21 20:59:15,396 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 20:59:15,491 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 20:59:15,501 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 20:59:15,636 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 20:59:15,723 WARN L675 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 20:59:15,731 INFO L206 MainTranslator]: Completed translation [2023-11-21 20:59:15,732 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:15 WrapperNode [2023-11-21 20:59:15,732 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 20:59:15,734 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 20:59:15,734 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 20:59:15,734 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 20:59:15,743 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:15" (1/1) ... [2023-11-21 20:59:15,791 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:15" (1/1) ... [2023-11-21 20:59:15,830 INFO L138 Inliner]: procedures = 165, calls = 69, calls flagged for inlining = 23, calls inlined = 15, statements flattened = 101 [2023-11-21 20:59:15,831 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 20:59:15,832 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 20:59:15,832 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 20:59:15,832 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 20:59:15,843 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:15" (1/1) ... [2023-11-21 20:59:15,843 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:15" (1/1) ... [2023-11-21 20:59:15,860 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:15" (1/1) ... [2023-11-21 20:59:15,861 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:15" (1/1) ... [2023-11-21 20:59:15,888 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:15" (1/1) ... [2023-11-21 20:59:15,891 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:15" (1/1) ... [2023-11-21 20:59:15,893 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:15" (1/1) ... [2023-11-21 20:59:15,896 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:15" (1/1) ... [2023-11-21 20:59:15,900 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 20:59:15,901 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 20:59:15,901 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 20:59:15,901 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 20:59:15,902 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:15" (1/1) ... [2023-11-21 20:59:15,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 20:59:15,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:59:15,943 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 20:59:15,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 20:59:15,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-21 20:59:15,997 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2023-11-21 20:59:15,997 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2023-11-21 20:59:15,997 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-21 20:59:15,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-21 20:59:15,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 20:59:15,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 20:59:15,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 20:59:15,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 20:59:16,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-21 20:59:16,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 20:59:16,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-21 20:59:16,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 20:59:16,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 20:59:16,189 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 20:59:16,191 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 20:59:16,607 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 20:59:16,745 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 20:59:16,745 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 20:59:16,747 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:59:16 BoogieIcfgContainer [2023-11-21 20:59:16,747 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 20:59:16,750 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 20:59:16,750 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 20:59:16,753 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 20:59:16,753 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 08:59:14" (1/3) ... [2023-11-21 20:59:16,754 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f8dd96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:59:16, skipping insertion in model container [2023-11-21 20:59:16,754 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:15" (2/3) ... [2023-11-21 20:59:16,754 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f8dd96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:59:16, skipping insertion in model container [2023-11-21 20:59:16,755 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:59:16" (3/3) ... [2023-11-21 20:59:16,756 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test22_1-2.i [2023-11-21 20:59:16,774 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 20:59:16,775 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2023-11-21 20:59:16,830 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 20:59:16,837 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;@1f9137ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 20:59:16,837 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-21 20:59:16,841 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 32 states have (on average 1.875) internal successors, (60), 54 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 20:59:16,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-21 20:59:16,849 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:16,850 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:16,851 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-21 20:59:16,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:16,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1407485370, now seen corresponding path program 1 times [2023-11-21 20:59:16,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 20:59:16,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [6223122] [2023-11-21 20:59:16,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:16,869 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:16,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 20:59:16,872 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 20:59:16,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-21 20:59:17,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:17,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-21 20:59:17,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:59:17,269 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 12 treesize of output 11 [2023-11-21 20:59:17,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:17,602 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:59:17,603 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 20:59:17,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [6223122] [2023-11-21 20:59:17,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [6223122] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:17,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:17,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 20:59:17,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508742081] [2023-11-21 20:59:17,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:17,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 20:59:17,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 20:59:17,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 20:59:17,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-21 20:59:17,656 INFO L87 Difference]: Start difference. First operand has 58 states, 32 states have (on average 1.875) internal successors, (60), 54 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 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) [2023-11-21 20:59:18,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:18,208 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2023-11-21 20:59:18,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 20:59:18,211 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 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 7 [2023-11-21 20:59:18,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:18,222 INFO L225 Difference]: With dead ends: 57 [2023-11-21 20:59:18,223 INFO L226 Difference]: Without dead ends: 56 [2023-11-21 20:59:18,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-21 20:59:18,242 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 20 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:18,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 142 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 20:59:18,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-11-21 20:59:18,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-11-21 20:59:18,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 32 states have (on average 1.8125) internal successors, (58), 52 states have internal predecessors, (58), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 20:59:18,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 62 transitions. [2023-11-21 20:59:18,301 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 62 transitions. Word has length 7 [2023-11-21 20:59:18,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:18,303 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 62 transitions. [2023-11-21 20:59:18,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 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) [2023-11-21 20:59:18,304 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 62 transitions. [2023-11-21 20:59:18,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 20:59:18,307 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:18,307 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:18,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-21 20:59:18,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:18,511 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-21 20:59:18,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:18,511 INFO L85 PathProgramCache]: Analyzing trace with hash -682373461, now seen corresponding path program 1 times [2023-11-21 20:59:18,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 20:59:18,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1255473612] [2023-11-21 20:59:18,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:18,513 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:18,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 20:59:18,515 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 20:59:18,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-21 20:59:18,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:18,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-21 20:59:18,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:59:18,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2023-11-21 20:59:18,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-21 20:59:18,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:18,896 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:59:18,896 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 20:59:18,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1255473612] [2023-11-21 20:59:18,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1255473612] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:18,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:18,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 20:59:18,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343497] [2023-11-21 20:59:18,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:18,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 20:59:18,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 20:59:18,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 20:59:18,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-21 20:59:18,900 INFO L87 Difference]: Start difference. First operand 56 states and 62 transitions. Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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) [2023-11-21 20:59:19,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:19,356 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2023-11-21 20:59:19,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 20:59:19,357 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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 8 [2023-11-21 20:59:19,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:19,358 INFO L225 Difference]: With dead ends: 55 [2023-11-21 20:59:19,358 INFO L226 Difference]: Without dead ends: 55 [2023-11-21 20:59:19,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-21 20:59:19,360 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 17 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:19,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 160 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 20:59:19,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-11-21 20:59:19,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2023-11-21 20:59:19,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 32 states have (on average 1.78125) internal successors, (57), 51 states have internal predecessors, (57), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 20:59:19,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2023-11-21 20:59:19,369 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 8 [2023-11-21 20:59:19,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:19,369 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2023-11-21 20:59:19,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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) [2023-11-21 20:59:19,370 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2023-11-21 20:59:19,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-21 20:59:19,370 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:19,371 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:19,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-21 20:59:19,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:19,574 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-21 20:59:19,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:19,574 INFO L85 PathProgramCache]: Analyzing trace with hash 321232460, now seen corresponding path program 1 times [2023-11-21 20:59:19,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 20:59:19,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1483247204] [2023-11-21 20:59:19,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:19,575 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:19,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 20:59:19,580 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 20:59:19,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-21 20:59:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:19,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-21 20:59:19,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:59:19,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:19,750 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:59:19,750 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 20:59:19,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1483247204] [2023-11-21 20:59:19,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1483247204] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:19,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:19,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 20:59:19,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314055481] [2023-11-21 20:59:19,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:19,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 20:59:19,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 20:59:19,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 20:59:19,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 20:59:19,754 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2023-11-21 20:59:19,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:19,916 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2023-11-21 20:59:19,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 20:59:19,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 9 [2023-11-21 20:59:19,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:19,918 INFO L225 Difference]: With dead ends: 61 [2023-11-21 20:59:19,919 INFO L226 Difference]: Without dead ends: 61 [2023-11-21 20:59:19,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 20:59:19,920 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 5 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:19,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 142 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 20:59:19,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-11-21 20:59:19,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 57. [2023-11-21 20:59:19,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 34 states have (on average 1.7352941176470589) internal successors, (59), 53 states have internal predecessors, (59), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 20:59:19,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2023-11-21 20:59:19,930 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 9 [2023-11-21 20:59:19,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:19,931 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2023-11-21 20:59:19,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2023-11-21 20:59:19,931 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2023-11-21 20:59:19,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-21 20:59:19,932 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:19,932 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:19,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-21 20:59:20,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:20,135 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-21 20:59:20,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:20,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1368320135, now seen corresponding path program 1 times [2023-11-21 20:59:20,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 20:59:20,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [677329022] [2023-11-21 20:59:20,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:20,147 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:20,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 20:59:20,148 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 20:59:20,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-21 20:59:20,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:20,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 20:59:20,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:59:20,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:20,441 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:59:20,441 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 20:59:20,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [677329022] [2023-11-21 20:59:20,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [677329022] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:20,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:20,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 20:59:20,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904830459] [2023-11-21 20:59:20,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:20,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 20:59:20,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 20:59:20,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 20:59:20,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-21 20:59:20,444 INFO L87 Difference]: Start difference. First operand 57 states and 63 transitions. Second operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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) [2023-11-21 20:59:20,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:20,923 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2023-11-21 20:59:20,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 20:59:20,924 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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 10 [2023-11-21 20:59:20,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:20,924 INFO L225 Difference]: With dead ends: 59 [2023-11-21 20:59:20,925 INFO L226 Difference]: Without dead ends: 55 [2023-11-21 20:59:20,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-21 20:59:20,926 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 22 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:20,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 147 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 20:59:20,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-11-21 20:59:20,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2023-11-21 20:59:20,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 32 states have (on average 1.75) internal successors, (56), 51 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 20:59:20,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2023-11-21 20:59:20,933 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 10 [2023-11-21 20:59:20,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:20,933 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2023-11-21 20:59:20,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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) [2023-11-21 20:59:20,934 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2023-11-21 20:59:20,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-21 20:59:20,934 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:20,934 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:20,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-11-21 20:59:21,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:21,138 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-21 20:59:21,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:21,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1450192300, now seen corresponding path program 1 times [2023-11-21 20:59:21,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 20:59:21,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [338355904] [2023-11-21 20:59:21,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:21,139 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:21,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 20:59:21,141 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 20:59:21,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-21 20:59:21,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:21,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 20:59:21,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:59:21,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:21,241 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:59:21,255 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 20:59:21,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [338355904] [2023-11-21 20:59:21,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [338355904] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:21,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:21,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 20:59:21,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757705925] [2023-11-21 20:59:21,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:21,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 20:59:21,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 20:59:21,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 20:59:21,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 20:59:21,259 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2023-11-21 20:59:21,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:21,350 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2023-11-21 20:59:21,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 20:59:21,350 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 12 [2023-11-21 20:59:21,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:21,351 INFO L225 Difference]: With dead ends: 56 [2023-11-21 20:59:21,351 INFO L226 Difference]: Without dead ends: 56 [2023-11-21 20:59:21,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 20:59:21,353 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 2 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:21,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 93 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 20:59:21,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-11-21 20:59:21,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-11-21 20:59:21,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 33 states have (on average 1.7272727272727273) internal successors, (57), 52 states have internal predecessors, (57), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 20:59:21,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2023-11-21 20:59:21,367 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 12 [2023-11-21 20:59:21,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:21,367 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2023-11-21 20:59:21,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2023-11-21 20:59:21,367 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2023-11-21 20:59:21,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-21 20:59:21,368 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:21,368 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:21,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-21 20:59:21,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:21,572 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-21 20:59:21,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:21,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1910386283, now seen corresponding path program 1 times [2023-11-21 20:59:21,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 20:59:21,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [782548545] [2023-11-21 20:59:21,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:21,573 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:21,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 20:59:21,574 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 20:59:21,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-21 20:59:21,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:21,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 20:59:21,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:59:21,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:21,688 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 20:59:21,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:21,745 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 20:59:21,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [782548545] [2023-11-21 20:59:21,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [782548545] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 20:59:21,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 20:59:21,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-21 20:59:21,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150457049] [2023-11-21 20:59:21,745 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 20:59:21,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 20:59:21,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 20:59:21,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 20:59:21,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-21 20:59:21,747 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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) [2023-11-21 20:59:21,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:21,993 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2023-11-21 20:59:21,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 20:59:21,996 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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 13 [2023-11-21 20:59:21,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:21,996 INFO L225 Difference]: With dead ends: 59 [2023-11-21 20:59:21,997 INFO L226 Difference]: Without dead ends: 59 [2023-11-21 20:59:21,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-11-21 20:59:21,998 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 8 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:21,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 276 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 20:59:21,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-21 20:59:22,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-11-21 20:59:22,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 36 states have (on average 1.6666666666666667) internal successors, (60), 55 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 20:59:22,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 64 transitions. [2023-11-21 20:59:22,004 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 64 transitions. Word has length 13 [2023-11-21 20:59:22,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:22,004 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 64 transitions. [2023-11-21 20:59:22,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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) [2023-11-21 20:59:22,004 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 64 transitions. [2023-11-21 20:59:22,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-21 20:59:22,005 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:22,005 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:22,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-21 20:59:22,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:22,208 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-21 20:59:22,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:22,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1035344532, now seen corresponding path program 2 times [2023-11-21 20:59:22,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 20:59:22,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [67670973] [2023-11-21 20:59:22,209 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 20:59:22,209 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:22,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 20:59:22,210 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 20:59:22,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-21 20:59:22,301 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-21 20:59:22,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 20:59:22,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-21 20:59:22,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:59:22,389 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-21 20:59:22,389 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:59:22,389 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 20:59:22,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [67670973] [2023-11-21 20:59:22,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [67670973] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:22,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:22,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 20:59:22,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893281696] [2023-11-21 20:59:22,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:22,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 20:59:22,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 20:59:22,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 20:59:22,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-21 20:59:22,394 INFO L87 Difference]: Start difference. First operand 59 states and 64 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 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) [2023-11-21 20:59:22,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:22,744 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2023-11-21 20:59:22,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 20:59:22,745 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 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 16 [2023-11-21 20:59:22,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:22,746 INFO L225 Difference]: With dead ends: 58 [2023-11-21 20:59:22,746 INFO L226 Difference]: Without dead ends: 58 [2023-11-21 20:59:22,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-21 20:59:22,747 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 24 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:22,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 172 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 20:59:22,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-11-21 20:59:22,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2023-11-21 20:59:22,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 36 states have (on average 1.6388888888888888) internal successors, (59), 54 states have internal predecessors, (59), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 20:59:22,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2023-11-21 20:59:22,760 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 16 [2023-11-21 20:59:22,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:22,761 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2023-11-21 20:59:22,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 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) [2023-11-21 20:59:22,761 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2023-11-21 20:59:22,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-21 20:59:22,762 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:22,762 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:22,770 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-11-21 20:59:22,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:22,965 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-21 20:59:22,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:22,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1035344531, now seen corresponding path program 1 times [2023-11-21 20:59:22,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 20:59:22,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1983099667] [2023-11-21 20:59:22,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:22,967 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:22,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 20:59:22,968 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 20:59:22,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-21 20:59:23,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:23,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-21 20:59:23,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:59:23,167 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:23,167 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 20:59:23,367 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:23,368 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 20:59:23,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1983099667] [2023-11-21 20:59:23,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1983099667] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 20:59:23,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 20:59:23,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-21 20:59:23,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919599958] [2023-11-21 20:59:23,368 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 20:59:23,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-21 20:59:23,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 20:59:23,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-21 20:59:23,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-11-21 20:59:23,370 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 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) [2023-11-21 20:59:23,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:23,926 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2023-11-21 20:59:23,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-21 20:59:23,927 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 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 16 [2023-11-21 20:59:23,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:23,928 INFO L225 Difference]: With dead ends: 64 [2023-11-21 20:59:23,928 INFO L226 Difference]: Without dead ends: 64 [2023-11-21 20:59:23,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=131, Invalid=211, Unknown=0, NotChecked=0, Total=342 [2023-11-21 20:59:23,929 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 14 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:23,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 405 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 20:59:23,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-11-21 20:59:23,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-11-21 20:59:23,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 42 states have (on average 1.5476190476190477) internal successors, (65), 60 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 20:59:23,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 69 transitions. [2023-11-21 20:59:23,935 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 69 transitions. Word has length 16 [2023-11-21 20:59:23,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:23,935 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 69 transitions. [2023-11-21 20:59:23,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 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) [2023-11-21 20:59:23,936 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 69 transitions. [2023-11-21 20:59:23,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-21 20:59:23,936 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:23,937 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:23,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-21 20:59:24,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:24,138 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-21 20:59:24,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:24,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1184625933, now seen corresponding path program 2 times [2023-11-21 20:59:24,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 20:59:24,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2105316656] [2023-11-21 20:59:24,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 20:59:24,139 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:24,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 20:59:24,140 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 20:59:24,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-21 20:59:24,234 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-21 20:59:24,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 20:59:24,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-21 20:59:24,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:59:24,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2023-11-21 20:59:24,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-21 20:59:24,812 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-21 20:59:24,812 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:59:24,813 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 20:59:24,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2105316656] [2023-11-21 20:59:24,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2105316656] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:24,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:24,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-21 20:59:24,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422677565] [2023-11-21 20:59:24,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:24,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 20:59:24,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 20:59:24,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 20:59:24,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-21 20:59:24,815 INFO L87 Difference]: Start difference. First operand 64 states and 69 transitions. Second operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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) [2023-11-21 20:59:25,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:25,425 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2023-11-21 20:59:25,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 20:59:25,426 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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 22 [2023-11-21 20:59:25,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:25,427 INFO L225 Difference]: With dead ends: 63 [2023-11-21 20:59:25,427 INFO L226 Difference]: Without dead ends: 63 [2023-11-21 20:59:25,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-21 20:59:25,428 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 12 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:25,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 232 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 20:59:25,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-11-21 20:59:25,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2023-11-21 20:59:25,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 42 states have (on average 1.4761904761904763) internal successors, (62), 58 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 20:59:25,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2023-11-21 20:59:25,433 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 22 [2023-11-21 20:59:25,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:25,434 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2023-11-21 20:59:25,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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) [2023-11-21 20:59:25,434 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2023-11-21 20:59:25,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-21 20:59:25,435 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:25,435 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:25,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-21 20:59:25,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:25,638 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-21 20:59:25,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:25,638 INFO L85 PathProgramCache]: Analyzing trace with hash -552479943, now seen corresponding path program 1 times [2023-11-21 20:59:25,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 20:59:25,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1487731044] [2023-11-21 20:59:25,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:25,640 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:25,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 20:59:25,641 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 20:59:25,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-21 20:59:25,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:25,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-21 20:59:25,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:59:26,051 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:26,051 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 20:59:26,595 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:26,595 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 20:59:26,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1487731044] [2023-11-21 20:59:26,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1487731044] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 20:59:26,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 20:59:26,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-11-21 20:59:26,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855386617] [2023-11-21 20:59:26,596 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 20:59:26,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-21 20:59:26,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 20:59:26,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-21 20:59:26,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650 [2023-11-21 20:59:26,598 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand has 26 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 20:59:27,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:27,589 INFO L93 Difference]: Finished difference Result 69 states and 72 transitions. [2023-11-21 20:59:27,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-21 20:59:27,591 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2023-11-21 20:59:27,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:27,592 INFO L225 Difference]: With dead ends: 69 [2023-11-21 20:59:27,592 INFO L226 Difference]: Without dead ends: 69 [2023-11-21 20:59:27,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=278, Invalid=652, Unknown=0, NotChecked=0, Total=930 [2023-11-21 20:59:27,593 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 14 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:27,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 546 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-21 20:59:27,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-11-21 20:59:27,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2023-11-21 20:59:27,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 48 states have (on average 1.4166666666666667) internal successors, (68), 64 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 20:59:27,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2023-11-21 20:59:27,598 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 25 [2023-11-21 20:59:27,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:27,598 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2023-11-21 20:59:27,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 20:59:27,599 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2023-11-21 20:59:27,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-21 20:59:27,606 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:27,606 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:27,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-21 20:59:27,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:27,815 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-21 20:59:27,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:27,816 INFO L85 PathProgramCache]: Analyzing trace with hash 310859673, now seen corresponding path program 2 times [2023-11-21 20:59:27,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 20:59:27,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1284915084] [2023-11-21 20:59:27,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 20:59:27,816 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:27,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 20:59:27,817 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 20:59:27,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-21 20:59:27,943 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-21 20:59:27,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 20:59:27,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-21 20:59:27,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:59:28,071 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-21 20:59:28,072 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:59:28,072 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 20:59:28,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1284915084] [2023-11-21 20:59:28,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1284915084] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:28,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:28,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 20:59:28,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105117338] [2023-11-21 20:59:28,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:28,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 20:59:28,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 20:59:28,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 20:59:28,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-21 20:59:28,074 INFO L87 Difference]: Start difference. First operand 69 states and 72 transitions. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 20:59:28,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:28,461 INFO L93 Difference]: Finished difference Result 67 states and 70 transitions. [2023-11-21 20:59:28,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 20:59:28,461 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2023-11-21 20:59:28,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:28,462 INFO L225 Difference]: With dead ends: 67 [2023-11-21 20:59:28,463 INFO L226 Difference]: Without dead ends: 67 [2023-11-21 20:59:28,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-11-21 20:59:28,464 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 22 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:28,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 170 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 20:59:28,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-11-21 20:59:28,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2023-11-21 20:59:28,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 48 states have (on average 1.375) internal successors, (66), 62 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 20:59:28,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2023-11-21 20:59:28,469 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 31 [2023-11-21 20:59:28,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:28,470 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2023-11-21 20:59:28,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 20:59:28,470 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2023-11-21 20:59:28,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-21 20:59:28,471 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:28,472 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:28,476 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-11-21 20:59:28,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:28,674 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-21 20:59:28,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:28,675 INFO L85 PathProgramCache]: Analyzing trace with hash 310859674, now seen corresponding path program 1 times [2023-11-21 20:59:28,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 20:59:28,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1306434146] [2023-11-21 20:59:28,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:28,676 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:28,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 20:59:28,677 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 20:59:28,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-21 20:59:28,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:28,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-21 20:59:28,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:59:28,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2023-11-21 20:59:28,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-21 20:59:29,535 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-21 20:59:29,536 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:59:29,536 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 20:59:29,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1306434146] [2023-11-21 20:59:29,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1306434146] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:29,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:29,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-21 20:59:29,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159389564] [2023-11-21 20:59:29,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:29,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-21 20:59:29,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 20:59:29,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-21 20:59:29,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-21 20:59:29,538 INFO L87 Difference]: Start difference. First operand 67 states and 70 transitions. Second operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 20:59:30,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:30,132 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2023-11-21 20:59:30,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 20:59:30,133 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2023-11-21 20:59:30,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:30,134 INFO L225 Difference]: With dead ends: 65 [2023-11-21 20:59:30,134 INFO L226 Difference]: Without dead ends: 65 [2023-11-21 20:59:30,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-21 20:59:30,135 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 21 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:30,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 208 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 20:59:30,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-11-21 20:59:30,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2023-11-21 20:59:30,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 48 states have (on average 1.3333333333333333) internal successors, (64), 60 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 20:59:30,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2023-11-21 20:59:30,141 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 31 [2023-11-21 20:59:30,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:30,142 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2023-11-21 20:59:30,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 20:59:30,142 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2023-11-21 20:59:30,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-21 20:59:30,143 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:30,143 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:30,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-11-21 20:59:30,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:30,348 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-21 20:59:30,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:30,349 INFO L85 PathProgramCache]: Analyzing trace with hash 219777638, now seen corresponding path program 1 times [2023-11-21 20:59:30,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 20:59:30,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [274286686] [2023-11-21 20:59:30,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:30,349 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:30,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 20:59:30,350 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 20:59:30,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-21 20:59:30,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:30,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-21 20:59:30,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:59:30,813 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-21 20:59:30,813 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:59:30,814 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 20:59:30,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [274286686] [2023-11-21 20:59:30,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [274286686] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:30,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:30,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 20:59:30,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555902642] [2023-11-21 20:59:30,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:30,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 20:59:30,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 20:59:30,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 20:59:30,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-21 20:59:30,816 INFO L87 Difference]: Start difference. First operand 65 states and 68 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 20:59:31,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:31,223 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2023-11-21 20:59:31,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 20:59:31,224 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2023-11-21 20:59:31,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:31,225 INFO L225 Difference]: With dead ends: 67 [2023-11-21 20:59:31,225 INFO L226 Difference]: Without dead ends: 67 [2023-11-21 20:59:31,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-11-21 20:59:31,226 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 48 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:31,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 91 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 20:59:31,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-11-21 20:59:31,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2023-11-21 20:59:31,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 48 states have (on average 1.2916666666666667) internal successors, (62), 58 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 20:59:31,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2023-11-21 20:59:31,232 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 38 [2023-11-21 20:59:31,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:31,232 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2023-11-21 20:59:31,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 20:59:31,233 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2023-11-21 20:59:31,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-21 20:59:31,234 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:31,234 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:31,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-11-21 20:59:31,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:31,439 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-21 20:59:31,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:31,439 INFO L85 PathProgramCache]: Analyzing trace with hash 219777639, now seen corresponding path program 1 times [2023-11-21 20:59:31,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 20:59:31,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [466658095] [2023-11-21 20:59:31,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:31,441 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:31,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 20:59:31,442 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 20:59:31,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-21 20:59:31,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:31,741 INFO L262 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-21 20:59:31,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:59:31,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-21 20:59:31,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2023-11-21 20:59:32,692 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-21 20:59:32,692 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:59:32,693 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 20:59:32,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [466658095] [2023-11-21 20:59:32,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [466658095] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:32,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:32,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-21 20:59:32,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871749087] [2023-11-21 20:59:32,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:32,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-21 20:59:32,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 20:59:32,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-21 20:59:32,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-21 20:59:32,696 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand has 12 states, 10 states have (on average 1.9) internal successors, (19), 11 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 20:59:33,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:33,301 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2023-11-21 20:59:33,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-21 20:59:33,302 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.9) internal successors, (19), 11 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2023-11-21 20:59:33,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:33,303 INFO L225 Difference]: With dead ends: 61 [2023-11-21 20:59:33,303 INFO L226 Difference]: Without dead ends: 61 [2023-11-21 20:59:33,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2023-11-21 20:59:33,304 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 84 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:33,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 159 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 20:59:33,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-11-21 20:59:33,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2023-11-21 20:59:33,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 48 states have (on average 1.2291666666666667) internal successors, (59), 56 states have internal predecessors, (59), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 20:59:33,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2023-11-21 20:59:33,309 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 38 [2023-11-21 20:59:33,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:33,310 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2023-11-21 20:59:33,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.9) internal successors, (19), 11 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 20:59:33,310 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2023-11-21 20:59:33,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-21 20:59:33,312 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:33,312 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:33,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-11-21 20:59:33,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:33,517 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-21 20:59:33,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:33,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1867699642, now seen corresponding path program 1 times [2023-11-21 20:59:33,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 20:59:33,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1863239124] [2023-11-21 20:59:33,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:33,518 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:33,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 20:59:33,519 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 20:59:33,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-21 20:59:33,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:33,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-21 20:59:33,802 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:59:33,980 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-21 20:59:33,980 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:59:33,980 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 20:59:33,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1863239124] [2023-11-21 20:59:33,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1863239124] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:33,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:33,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-21 20:59:33,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287119721] [2023-11-21 20:59:33,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:33,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 20:59:33,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 20:59:33,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 20:59:33,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-21 20:59:33,982 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 20:59:34,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:34,393 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2023-11-21 20:59:34,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-21 20:59:34,400 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2023-11-21 20:59:34,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:34,401 INFO L225 Difference]: With dead ends: 63 [2023-11-21 20:59:34,401 INFO L226 Difference]: Without dead ends: 63 [2023-11-21 20:59:34,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2023-11-21 20:59:34,404 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 59 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:34,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 73 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 20:59:34,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-11-21 20:59:34,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2023-11-21 20:59:34,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 48 states have (on average 1.1875) internal successors, (57), 54 states have internal predecessors, (57), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 20:59:34,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2023-11-21 20:59:34,409 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 41 [2023-11-21 20:59:34,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:34,410 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2023-11-21 20:59:34,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 20:59:34,410 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2023-11-21 20:59:34,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-21 20:59:34,411 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:34,411 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:34,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-11-21 20:59:34,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:34,618 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-21 20:59:34,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:34,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1867699643, now seen corresponding path program 1 times [2023-11-21 20:59:34,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 20:59:34,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1951372846] [2023-11-21 20:59:34,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:34,619 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:34,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 20:59:34,620 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 20:59:34,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-11-21 20:59:34,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:35,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-21 20:59:35,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:59:35,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2023-11-21 20:59:35,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-21 20:59:35,854 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-21 20:59:35,855 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:59:35,855 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 20:59:35,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1951372846] [2023-11-21 20:59:35,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1951372846] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:35,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:35,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-21 20:59:35,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547242603] [2023-11-21 20:59:35,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:35,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-21 20:59:35,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 20:59:35,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-21 20:59:35,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-21 20:59:35,857 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 20:59:36,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:36,574 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2023-11-21 20:59:36,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-21 20:59:36,575 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2023-11-21 20:59:36,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:36,576 INFO L225 Difference]: With dead ends: 57 [2023-11-21 20:59:36,576 INFO L226 Difference]: Without dead ends: 57 [2023-11-21 20:59:36,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-11-21 20:59:36,577 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 75 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:36,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 104 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-21 20:59:36,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-11-21 20:59:36,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2023-11-21 20:59:36,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 48 states have (on average 1.1458333333333333) internal successors, (55), 52 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 20:59:36,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2023-11-21 20:59:36,582 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 41 [2023-11-21 20:59:36,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:36,582 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2023-11-21 20:59:36,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 20:59:36,582 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2023-11-21 20:59:36,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-21 20:59:36,583 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:36,583 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:36,596 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-11-21 20:59:36,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:36,790 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-21 20:59:36,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:36,790 INFO L85 PathProgramCache]: Analyzing trace with hash -436916684, now seen corresponding path program 1 times [2023-11-21 20:59:36,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 20:59:36,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1421822873] [2023-11-21 20:59:36,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:36,791 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:36,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 20:59:36,792 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 20:59:36,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-21 20:59:37,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:37,114 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-21 20:59:37,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:59:37,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2023-11-21 20:59:37,523 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-21 20:59:37,523 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:59:37,523 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 20:59:37,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1421822873] [2023-11-21 20:59:37,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1421822873] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:37,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:37,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-21 20:59:37,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491742284] [2023-11-21 20:59:37,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:37,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-21 20:59:37,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 20:59:37,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-21 20:59:37,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-21 20:59:37,526 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 20:59:38,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:38,153 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2023-11-21 20:59:38,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-21 20:59:38,154 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 43 [2023-11-21 20:59:38,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:38,155 INFO L225 Difference]: With dead ends: 56 [2023-11-21 20:59:38,155 INFO L226 Difference]: Without dead ends: 56 [2023-11-21 20:59:38,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-11-21 20:59:38,156 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 77 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:38,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 97 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 20:59:38,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-11-21 20:59:38,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-11-21 20:59:38,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 48 states have (on average 1.125) internal successors, (54), 51 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 20:59:38,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2023-11-21 20:59:38,160 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 43 [2023-11-21 20:59:38,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:38,160 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2023-11-21 20:59:38,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 20:59:38,161 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2023-11-21 20:59:38,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-21 20:59:38,161 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:38,162 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:38,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-11-21 20:59:38,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:38,367 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-21 20:59:38,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:38,367 INFO L85 PathProgramCache]: Analyzing trace with hash -436044279, now seen corresponding path program 1 times [2023-11-21 20:59:38,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 20:59:38,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [810048943] [2023-11-21 20:59:38,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:38,368 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:38,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 20:59:38,370 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 20:59:38,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-11-21 20:59:38,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:38,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 59 conjunts are in the unsatisfiable core [2023-11-21 20:59:38,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:59:39,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:39,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:39,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:39,009 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-21 20:59:39,010 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-21 20:59:39,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 33 [2023-11-21 20:59:39,302 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 20:59:39,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 55 treesize of output 45 [2023-11-21 20:59:39,661 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 20:59:39,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 28 [2023-11-21 20:59:39,737 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-21 20:59:39,737 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:59:39,737 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 20:59:39,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [810048943] [2023-11-21 20:59:39,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [810048943] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:39,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:39,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-11-21 20:59:39,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319170492] [2023-11-21 20:59:39,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:39,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-21 20:59:39,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 20:59:39,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-21 20:59:39,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2023-11-21 20:59:39,740 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand has 19 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 20:59:40,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:40,967 INFO L93 Difference]: Finished difference Result 56 states and 57 transitions. [2023-11-21 20:59:40,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-21 20:59:40,968 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 43 [2023-11-21 20:59:40,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:40,969 INFO L225 Difference]: With dead ends: 56 [2023-11-21 20:59:40,969 INFO L226 Difference]: Without dead ends: 56 [2023-11-21 20:59:40,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=102, Invalid=654, Unknown=0, NotChecked=0, Total=756 [2023-11-21 20:59:40,974 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 12 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:40,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 262 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-21 20:59:40,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-11-21 20:59:40,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-11-21 20:59:40,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 51 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 20:59:40,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2023-11-21 20:59:40,978 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 43 [2023-11-21 20:59:40,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:40,979 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2023-11-21 20:59:40,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 20:59:40,979 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2023-11-21 20:59:40,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-21 20:59:40,980 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:40,980 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:40,991 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2023-11-21 20:59:41,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:41,187 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-21 20:59:41,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:41,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1861046488, now seen corresponding path program 1 times [2023-11-21 20:59:41,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 20:59:41,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [822291993] [2023-11-21 20:59:41,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:41,188 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:41,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 20:59:41,189 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 20:59:41,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-11-21 20:59:41,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:41,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 115 conjunts are in the unsatisfiable core [2023-11-21 20:59:41,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:59:41,659 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 11 treesize of output 7 [2023-11-21 20:59:41,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:41,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 27 treesize of output 11 [2023-11-21 20:59:41,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:41,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 27 treesize of output 11 [2023-11-21 20:59:41,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:41,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 27 treesize of output 11 [2023-11-21 20:59:41,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:41,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 27 treesize of output 11 [2023-11-21 20:59:41,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:41,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 27 treesize of output 11 [2023-11-21 20:59:41,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:41,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 27 treesize of output 11 [2023-11-21 20:59:41,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:41,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 27 treesize of output 11 [2023-11-21 20:59:42,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:42,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 27 treesize of output 11 [2023-11-21 20:59:42,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:42,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 27 treesize of output 11 [2023-11-21 20:59:42,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:42,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 27 treesize of output 11 [2023-11-21 20:59:42,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:42,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 27 treesize of output 11 [2023-11-21 20:59:42,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:42,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 27 treesize of output 11 [2023-11-21 20:59:42,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:42,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 27 treesize of output 11 [2023-11-21 20:59:42,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:42,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 27 treesize of output 11 [2023-11-21 20:59:42,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-21 20:59:42,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 11 [2023-11-21 20:59:43,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 11 [2023-11-21 20:59:43,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 13 [2023-11-21 20:59:43,779 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 7 treesize of output 3 [2023-11-21 20:59:43,855 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:43,855 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 20:59:45,193 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 20:59:45,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [822291993] [2023-11-21 20:59:45,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [822291993] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 20:59:45,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1684252533] [2023-11-21 20:59:45,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:45,195 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-21 20:59:45,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/cvc4 [2023-11-21 20:59:45,204 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-21 20:59:45,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2023-11-21 20:59:46,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:46,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 123 conjunts are in the unsatisfiable core [2023-11-21 20:59:46,075 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:59:46,132 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 11 treesize of output 7 [2023-11-21 20:59:46,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:46,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 27 treesize of output 11 [2023-11-21 20:59:46,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:46,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 27 treesize of output 11 [2023-11-21 20:59:46,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:46,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 27 treesize of output 11 [2023-11-21 20:59:46,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:46,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 27 treesize of output 11 [2023-11-21 20:59:46,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:46,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 27 treesize of output 11 [2023-11-21 20:59:46,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:46,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 27 treesize of output 11 [2023-11-21 20:59:46,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:46,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 27 treesize of output 11 [2023-11-21 20:59:46,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:46,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 27 treesize of output 11 [2023-11-21 20:59:46,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:46,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 27 treesize of output 11 [2023-11-21 20:59:46,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:46,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 27 treesize of output 11 [2023-11-21 20:59:46,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:46,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 27 treesize of output 11 [2023-11-21 20:59:46,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:46,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 27 treesize of output 11 [2023-11-21 20:59:46,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:46,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 27 treesize of output 11 [2023-11-21 20:59:46,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:46,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 27 treesize of output 11 [2023-11-21 20:59:46,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-21 20:59:46,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 11 [2023-11-21 20:59:46,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 11 [2023-11-21 20:59:46,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 13 [2023-11-21 20:59:46,828 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 7 treesize of output 3 [2023-11-21 20:59:46,840 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:46,840 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 20:59:47,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1684252533] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 20:59:47,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 20:59:47,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2023-11-21 20:59:47,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759407489] [2023-11-21 20:59:47,768 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 20:59:47,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-21 20:59:47,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 20:59:47,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-21 20:59:47,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1581, Unknown=0, NotChecked=0, Total=1722 [2023-11-21 20:59:47,772 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 33 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 32 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 20:59:52,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:52,979 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2023-11-21 20:59:52,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-21 20:59:52,980 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 32 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 46 [2023-11-21 20:59:52,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:52,980 INFO L225 Difference]: With dead ends: 55 [2023-11-21 20:59:52,980 INFO L226 Difference]: Without dead ends: 55 [2023-11-21 20:59:52,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 76 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 586 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=308, Invalid=3852, Unknown=0, NotChecked=0, Total=4160 [2023-11-21 20:59:52,982 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 58 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:52,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 123 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-21 20:59:52,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-11-21 20:59:52,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2023-11-21 20:59:52,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 50 states have internal predecessors, (52), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 20:59:52,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2023-11-21 20:59:52,986 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 46 [2023-11-21 20:59:52,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:52,986 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2023-11-21 20:59:52,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 32 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 20:59:52,987 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2023-11-21 20:59:52,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-21 20:59:52,988 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:52,988 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:52,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2023-11-21 20:59:53,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-11-21 20:59:53,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:53,389 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-21 20:59:53,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:53,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1857866393, now seen corresponding path program 1 times [2023-11-21 20:59:53,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 20:59:53,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1856404880] [2023-11-21 20:59:53,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:53,390 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:53,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 20:59:53,391 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 20:59:53,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e24544-d923-4d40-a3d8-e8ea95e51db0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-11-21 20:59:53,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:53,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 114 conjunts are in the unsatisfiable core [2023-11-21 20:59:53,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:59:53,886 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 11 treesize of output 7 [2023-11-21 20:59:53,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:53,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2023-11-21 20:59:53,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:53,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:53,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2023-11-21 20:59:54,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:54,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:54,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:54,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2023-11-21 20:59:54,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:54,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:54,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:54,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:54,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 56 [2023-11-21 20:59:54,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:54,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:54,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:54,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:54,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:54,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 68 [2023-11-21 20:59:54,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:54,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:54,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:54,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:54,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:54,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:54,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 80 [2023-11-21 20:59:54,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:54,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:54,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:54,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:54,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:54,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:54,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:54,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 92 [2023-11-21 20:59:54,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:54,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:54,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:54,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:54,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:54,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:54,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:54,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:54,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 104 [2023-11-21 20:59:55,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:55,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:55,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:55,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:55,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:55,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:55,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:55,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:55,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:55,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 116 [2023-11-21 20:59:55,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:55,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:55,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:55,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:55,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:55,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:55,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:55,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:55,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:55,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:55,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 55 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 128 [2023-11-21 20:59:55,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:55,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:55,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:55,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:55,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:55,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:55,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:55,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:55,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:55,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:55,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:55,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 66 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 140 [2023-11-21 20:59:56,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:56,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:56,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:56,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:56,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:56,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:56,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:56,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:56,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:56,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:56,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:56,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:56,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 78 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 152 [2023-11-21 20:59:56,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:56,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:56,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:56,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:56,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:56,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:56,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:56,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:56,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:56,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:56,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:56,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:56,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:56,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 91 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 164 [2023-11-21 20:59:57,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:57,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:57,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:57,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:57,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:57,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:57,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:57,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:57,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:57,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:57,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:57,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:57,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:57,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 20:59:57,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 105 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 176 [2023-11-21 20:59:57,933 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 20:59:57,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 105 case distinctions, treesize of input 147 treesize of output 188 [2023-11-21 21:00:00,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:00:00,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:00:00,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:00:00,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:00:00,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:00:00,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:00:00,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:00:00,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:00:00,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:00:00,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:00:00,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:00:00,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:00:00,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:00:00,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:00:00,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:00:00,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:00:00,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:00:00,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:00:00,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:00:00,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:00:00,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:00:00,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:00:00,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:00:00,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:00:00,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:00:00,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:00:00,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:00:00,445 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-21 21:00:00,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:00:00,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:00:00,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:00:00,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:00:00,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:00:00,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:00:00,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:00:00,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:00:00,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:00:00,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:00:00,463 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-21 21:00:00,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:00:00,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:00:00,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:00:00,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:00:00,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:00:00,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:00:00,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:00:00,477 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-21 21:00:00,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:00:00,480 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-21 21:00:00,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:00:00,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:00:00,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 120 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 0 case distinctions, treesize of input 195 treesize of output 170