./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 e2d96ac7da90505ebe789a14ca36a5b916234d7d0d8ab11cf581076a8deb0195 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 18:28:08,161 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 18:28:08,236 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-24 18:28:08,242 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 18:28:08,243 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 18:28:08,270 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 18:28:08,271 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 18:28:08,271 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 18:28:08,272 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 18:28:08,273 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 18:28:08,273 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 18:28:08,273 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 18:28:08,274 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 18:28:08,275 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 18:28:08,275 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 18:28:08,276 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 18:28:08,276 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 18:28:08,276 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 18:28:08,276 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 18:28:08,277 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 18:28:08,277 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-24 18:28:08,280 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-24 18:28:08,280 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-24 18:28:08,280 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 18:28:08,280 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-24 18:28:08,280 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 18:28:08,281 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 18:28:08,281 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 18:28:08,281 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 18:28:08,281 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 18:28:08,281 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 18:28:08,282 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 18:28:08,282 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 18:28:08,282 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 18:28:08,282 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 18:28:08,282 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 18:28:08,282 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 18:28:08,282 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 18:28:08,283 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 18:28:08,283 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 18:28:08,283 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 18:28:08,283 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 18:28:08,285 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2d96ac7da90505ebe789a14ca36a5b916234d7d0d8ab11cf581076a8deb0195 [2024-10-24 18:28:08,496 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 18:28:08,517 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 18:28:08,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 18:28:08,520 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 18:28:08,521 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 18:28:08,522 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.i [2024-10-24 18:28:09,798 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 18:28:10,070 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 18:28:10,071 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.i [2024-10-24 18:28:10,095 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a030c5836/59b2379ba0ec4bf89f92179e00a8ad7e/FLAG57433f48b [2024-10-24 18:28:10,110 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a030c5836/59b2379ba0ec4bf89f92179e00a8ad7e [2024-10-24 18:28:10,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 18:28:10,114 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 18:28:10,117 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 18:28:10,117 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 18:28:10,122 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 18:28:10,122 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:28:10" (1/1) ... [2024-10-24 18:28:10,123 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@140d4a6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:28:10, skipping insertion in model container [2024-10-24 18:28:10,123 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:28:10" (1/1) ... [2024-10-24 18:28:10,176 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 18:28:10,710 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 18:28:10,721 ERROR L321 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) [2024-10-24 18:28:10,722 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@48ddebbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:28:10, skipping insertion in model container [2024-10-24 18:28:10,722 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 18:28:10,722 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-24 18:28:10,724 INFO L158 Benchmark]: Toolchain (without parser) took 609.00ms. Allocated memory is still 188.7MB. Free memory was 156.0MB in the beginning and 124.7MB in the end (delta: 31.4MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-10-24 18:28:10,724 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 127.9MB. Free memory was 90.2MB in the beginning and 90.0MB in the end (delta: 118.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 18:28:10,725 INFO L158 Benchmark]: CACSL2BoogieTranslator took 605.64ms. Allocated memory is still 188.7MB. Free memory was 156.0MB in the beginning and 124.7MB in the end (delta: 31.4MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-10-24 18:28:10,726 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 127.9MB. Free memory was 90.2MB in the beginning and 90.0MB in the end (delta: 118.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 605.64ms. Allocated memory is still 188.7MB. Free memory was 156.0MB in the beginning and 124.7MB in the end (delta: 31.4MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 734]: 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: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 e2d96ac7da90505ebe789a14ca36a5b916234d7d0d8ab11cf581076a8deb0195 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 18:28:12,446 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 18:28:12,515 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-24 18:28:12,520 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 18:28:12,521 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 18:28:12,546 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 18:28:12,549 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 18:28:12,549 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 18:28:12,550 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 18:28:12,550 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 18:28:12,551 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 18:28:12,552 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 18:28:12,552 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 18:28:12,552 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 18:28:12,553 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 18:28:12,555 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 18:28:12,555 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 18:28:12,555 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 18:28:12,555 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 18:28:12,556 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 18:28:12,556 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-24 18:28:12,556 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-24 18:28:12,556 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-24 18:28:12,556 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 18:28:12,556 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-24 18:28:12,557 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-24 18:28:12,557 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 18:28:12,557 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-24 18:28:12,557 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 18:28:12,557 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 18:28:12,557 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 18:28:12,557 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 18:28:12,558 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 18:28:12,558 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 18:28:12,558 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 18:28:12,558 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 18:28:12,558 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 18:28:12,558 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 18:28:12,558 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-24 18:28:12,559 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-24 18:28:12,559 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 18:28:12,561 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 18:28:12,561 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 18:28:12,561 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 18:28:12,562 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-24 18:28:12,562 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2d96ac7da90505ebe789a14ca36a5b916234d7d0d8ab11cf581076a8deb0195 [2024-10-24 18:28:12,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 18:28:12,863 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 18:28:12,865 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 18:28:12,866 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 18:28:12,870 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 18:28:12,873 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.i [2024-10-24 18:28:14,238 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 18:28:14,543 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 18:28:14,544 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.i [2024-10-24 18:28:14,561 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c02373192/59e85eba1f9a4c43b4f5e8f0778ac582/FLAGc897c5a89 [2024-10-24 18:28:14,577 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c02373192/59e85eba1f9a4c43b4f5e8f0778ac582 [2024-10-24 18:28:14,580 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 18:28:14,582 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 18:28:14,584 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 18:28:14,585 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 18:28:14,590 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 18:28:14,592 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:28:14" (1/1) ... [2024-10-24 18:28:14,593 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bf8171a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:28:14, skipping insertion in model container [2024-10-24 18:28:14,593 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:28:14" (1/1) ... [2024-10-24 18:28:14,656 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 18:28:15,246 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 18:28:15,263 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-24 18:28:15,280 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 18:28:15,411 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 18:28:15,416 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 18:28:15,538 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 18:28:15,577 INFO L204 MainTranslator]: Completed translation [2024-10-24 18:28:15,577 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:28:15 WrapperNode [2024-10-24 18:28:15,578 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 18:28:15,578 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 18:28:15,579 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 18:28:15,579 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 18:28:15,584 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:28:15" (1/1) ... [2024-10-24 18:28:15,629 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:28:15" (1/1) ... [2024-10-24 18:28:15,687 INFO L138 Inliner]: procedures = 180, calls = 558, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2439 [2024-10-24 18:28:15,688 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 18:28:15,688 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 18:28:15,688 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 18:28:15,689 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 18:28:15,699 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:28:15" (1/1) ... [2024-10-24 18:28:15,700 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:28:15" (1/1) ... [2024-10-24 18:28:15,720 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:28:15" (1/1) ... [2024-10-24 18:28:15,861 INFO L175 MemorySlicer]: Split 528 memory accesses to 3 slices as follows [2, 420, 106]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 94 writes are split as follows [0, 90, 4]. [2024-10-24 18:28:15,862 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:28:15" (1/1) ... [2024-10-24 18:28:15,862 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:28:15" (1/1) ... [2024-10-24 18:28:15,915 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:28:15" (1/1) ... [2024-10-24 18:28:15,934 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:28:15" (1/1) ... [2024-10-24 18:28:15,947 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:28:15" (1/1) ... [2024-10-24 18:28:15,963 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:28:15" (1/1) ... [2024-10-24 18:28:15,976 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 18:28:15,995 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 18:28:15,995 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 18:28:15,995 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 18:28:15,996 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:28:15" (1/1) ... [2024-10-24 18:28:16,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 18:28:16,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 18:28:16,032 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 18:28:16,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 18:28:16,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-10-24 18:28:16,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-10-24 18:28:16,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-10-24 18:28:16,078 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2024-10-24 18:28:16,078 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2024-10-24 18:28:16,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-24 18:28:16,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-24 18:28:16,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-10-24 18:28:16,079 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-24 18:28:16,079 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-24 18:28:16,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-10-24 18:28:16,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-10-24 18:28:16,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-10-24 18:28:16,079 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-10-24 18:28:16,079 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-10-24 18:28:16,080 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-10-24 18:28:16,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 18:28:16,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 18:28:16,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-24 18:28:16,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-24 18:28:16,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-24 18:28:16,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-24 18:28:16,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-24 18:28:16,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-24 18:28:16,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-24 18:28:16,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 18:28:16,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-24 18:28:16,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-24 18:28:16,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-10-24 18:28:16,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-24 18:28:16,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-24 18:28:16,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-10-24 18:28:16,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 18:28:16,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 18:28:16,325 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 18:28:16,327 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 18:28:16,384 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-10-24 18:28:16,401 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-10-24 18:28:16,418 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-10-24 18:28:22,127 INFO L? ?]: Removed 2232 outVars from TransFormulas that were not future-live. [2024-10-24 18:28:22,127 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 18:28:22,359 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 18:28:22,359 INFO L314 CfgBuilder]: Removed 160 assume(true) statements. [2024-10-24 18:28:22,360 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:28:22 BoogieIcfgContainer [2024-10-24 18:28:22,360 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 18:28:22,361 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 18:28:22,362 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 18:28:22,364 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 18:28:22,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:28:14" (1/3) ... [2024-10-24 18:28:22,365 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f00c76c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:28:22, skipping insertion in model container [2024-10-24 18:28:22,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:28:15" (2/3) ... [2024-10-24 18:28:22,366 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f00c76c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:28:22, skipping insertion in model container [2024-10-24 18:28:22,366 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:28:22" (3/3) ... [2024-10-24 18:28:22,367 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test10-2.i [2024-10-24 18:28:22,381 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 18:28:22,382 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1091 error locations. [2024-10-24 18:28:22,442 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 18:28:22,448 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@2c07ee86, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 18:28:22,448 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1091 error locations. [2024-10-24 18:28:22,455 INFO L276 IsEmpty]: Start isEmpty. Operand has 2060 states, 957 states have (on average 2.456635318704284) internal successors, (2351), 2046 states have internal predecessors, (2351), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-24 18:28:22,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2024-10-24 18:28:22,461 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 18:28:22,461 INFO L215 NwaCegarLoop]: trace histogram [1, 1] [2024-10-24 18:28:22,462 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-10-24 18:28:22,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:28:22,466 INFO L85 PathProgramCache]: Analyzing trace with hash 119657, now seen corresponding path program 1 times [2024-10-24 18:28:22,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:28:22,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1102602248] [2024-10-24 18:28:22,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:28:22,476 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 [2024-10-24 18:28:22,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:28:22,477 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-24 18:28:22,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-24 18:28:22,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:28:22,643 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 18:28:22,648 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:28:22,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-24 18:28:22,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:28:22,690 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 18:28:22,691 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:28:22,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1102602248] [2024-10-24 18:28:22,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1102602248] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:28:22,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:28:22,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 18:28:22,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841810942] [2024-10-24 18:28:22,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:28:22,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 18:28:22,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:28:22,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 18:28:22,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 18:28:22,732 INFO L87 Difference]: Start difference. First operand has 2060 states, 957 states have (on average 2.456635318704284) internal successors, (2351), 2046 states have internal predecessors, (2351), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:28:25,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 18:28:25,506 INFO L93 Difference]: Finished difference Result 2659 states and 2843 transitions. [2024-10-24 18:28:25,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 18:28:25,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2024-10-24 18:28:25,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 18:28:25,544 INFO L225 Difference]: With dead ends: 2659 [2024-10-24 18:28:25,544 INFO L226 Difference]: Without dead ends: 2658 [2024-10-24 18:28:25,546 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 18:28:25,551 INFO L432 NwaCegarLoop]: 1167 mSDtfsCounter, 1946 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1956 SdHoareTripleChecker+Valid, 1561 SdHoareTripleChecker+Invalid, 1517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-24 18:28:25,551 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1956 Valid, 1561 Invalid, 1517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1492 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-24 18:28:25,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2658 states. [2024-10-24 18:28:25,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2658 to 2169. [2024-10-24 18:28:25,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2169 states, 1094 states have (on average 2.257769652650823) internal successors, (2470), 2153 states have internal predecessors, (2470), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-24 18:28:25,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2169 states to 2169 states and 2502 transitions. [2024-10-24 18:28:25,661 INFO L78 Accepts]: Start accepts. Automaton has 2169 states and 2502 transitions. Word has length 2 [2024-10-24 18:28:25,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 18:28:25,662 INFO L471 AbstractCegarLoop]: Abstraction has 2169 states and 2502 transitions. [2024-10-24 18:28:25,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:28:25,662 INFO L276 IsEmpty]: Start isEmpty. Operand 2169 states and 2502 transitions. [2024-10-24 18:28:25,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2024-10-24 18:28:25,662 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 18:28:25,662 INFO L215 NwaCegarLoop]: trace histogram [1, 1] [2024-10-24 18:28:25,666 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-10-24 18:28:25,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:28:25,866 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-10-24 18:28:25,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:28:25,867 INFO L85 PathProgramCache]: Analyzing trace with hash 119658, now seen corresponding path program 1 times [2024-10-24 18:28:25,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:28:25,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1980351347] [2024-10-24 18:28:25,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:28:25,868 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 [2024-10-24 18:28:25,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:28:25,870 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-24 18:28:25,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-24 18:28:25,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:28:25,992 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 18:28:25,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:28:26,001 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 [2024-10-24 18:28:26,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:28:26,010 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 18:28:26,010 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:28:26,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1980351347] [2024-10-24 18:28:26,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1980351347] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:28:26,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:28:26,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 18:28:26,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199659380] [2024-10-24 18:28:26,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:28:26,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 18:28:26,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:28:26,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 18:28:26,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 18:28:26,013 INFO L87 Difference]: Start difference. First operand 2169 states and 2502 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:28:29,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 18:28:29,498 INFO L93 Difference]: Finished difference Result 2894 states and 3307 transitions. [2024-10-24 18:28:29,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 18:28:29,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2024-10-24 18:28:29,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 18:28:29,506 INFO L225 Difference]: With dead ends: 2894 [2024-10-24 18:28:29,507 INFO L226 Difference]: Without dead ends: 2894 [2024-10-24 18:28:29,507 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 18:28:29,508 INFO L432 NwaCegarLoop]: 1683 mSDtfsCounter, 799 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 1565 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 2777 SdHoareTripleChecker+Invalid, 1576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-10-24 18:28:29,508 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 2777 Invalid, 1576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1565 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-10-24 18:28:29,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2024-10-24 18:28:29,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 2566. [2024-10-24 18:28:29,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2566 states, 1489 states have (on average 2.19543317662861) internal successors, (3269), 2547 states have internal predecessors, (3269), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2024-10-24 18:28:29,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2566 states to 2566 states and 3307 transitions. [2024-10-24 18:28:29,553 INFO L78 Accepts]: Start accepts. Automaton has 2566 states and 3307 transitions. Word has length 2 [2024-10-24 18:28:29,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 18:28:29,553 INFO L471 AbstractCegarLoop]: Abstraction has 2566 states and 3307 transitions. [2024-10-24 18:28:29,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:28:29,554 INFO L276 IsEmpty]: Start isEmpty. Operand 2566 states and 3307 transitions. [2024-10-24 18:28:29,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-24 18:28:29,554 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 18:28:29,554 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-24 18:28:29,557 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-10-24 18:28:29,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:28:29,755 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-10-24 18:28:29,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:28:29,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1162343629, now seen corresponding path program 1 times [2024-10-24 18:28:29,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:28:29,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [74655118] [2024-10-24 18:28:29,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:28:29,757 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 [2024-10-24 18:28:29,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:28:29,759 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-24 18:28:29,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-24 18:28:29,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:28:29,912 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 18:28:29,914 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:28:29,927 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 [2024-10-24 18:28:29,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-24 18:28:29,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 18:28:29,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-10-24 18:28:30,006 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-24 18:28:30,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-24 18:28:30,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:28:30,028 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 18:28:30,028 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:28:30,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [74655118] [2024-10-24 18:28:30,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [74655118] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:28:30,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:28:30,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 18:28:30,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741353646] [2024-10-24 18:28:30,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:28:30,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 18:28:30,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:28:30,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 18:28:30,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-24 18:28:30,030 INFO L87 Difference]: Start difference. First operand 2566 states and 3307 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:28:35,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 18:28:35,458 INFO L93 Difference]: Finished difference Result 4608 states and 5499 transitions. [2024-10-24 18:28:35,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 18:28:35,458 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-10-24 18:28:35,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 18:28:35,470 INFO L225 Difference]: With dead ends: 4608 [2024-10-24 18:28:35,470 INFO L226 Difference]: Without dead ends: 4608 [2024-10-24 18:28:35,471 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-24 18:28:35,473 INFO L432 NwaCegarLoop]: 760 mSDtfsCounter, 3927 mSDsluCounter, 1173 mSDsCounter, 0 mSdLazyCounter, 2804 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3936 SdHoareTripleChecker+Valid, 1933 SdHoareTripleChecker+Invalid, 2844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-10-24 18:28:35,476 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3936 Valid, 1933 Invalid, 2844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2804 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-10-24 18:28:35,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4608 states. [2024-10-24 18:28:35,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4608 to 3140. [2024-10-24 18:28:35,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3140 states, 2063 states have (on average 2.243819680077557) internal successors, (4629), 3115 states have internal predecessors, (4629), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-10-24 18:28:35,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3140 states to 3140 states and 4679 transitions. [2024-10-24 18:28:35,531 INFO L78 Accepts]: Start accepts. Automaton has 3140 states and 4679 transitions. Word has length 6 [2024-10-24 18:28:35,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 18:28:35,532 INFO L471 AbstractCegarLoop]: Abstraction has 3140 states and 4679 transitions. [2024-10-24 18:28:35,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:28:35,534 INFO L276 IsEmpty]: Start isEmpty. Operand 3140 states and 4679 transitions. [2024-10-24 18:28:35,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-24 18:28:35,534 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 18:28:35,534 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:28:35,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-24 18:28:35,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:28:35,738 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-10-24 18:28:35,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:28:35,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1672914111, now seen corresponding path program 1 times [2024-10-24 18:28:35,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:28:35,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1046895716] [2024-10-24 18:28:35,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:28:35,740 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 [2024-10-24 18:28:35,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:28:35,742 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-24 18:28:35,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-24 18:28:35,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:28:35,878 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 18:28:35,883 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:28:35,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-24 18:28:35,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:28:35,898 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 18:28:35,898 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:28:35,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1046895716] [2024-10-24 18:28:35,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1046895716] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:28:35,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:28:35,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 18:28:35,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486695462] [2024-10-24 18:28:35,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:28:35,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 18:28:35,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:28:35,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 18:28:35,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 18:28:35,899 INFO L87 Difference]: Start difference. First operand 3140 states and 4679 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:28:38,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 18:28:38,225 INFO L93 Difference]: Finished difference Result 3776 states and 5273 transitions. [2024-10-24 18:28:38,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 18:28:38,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-10-24 18:28:38,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 18:28:38,235 INFO L225 Difference]: With dead ends: 3776 [2024-10-24 18:28:38,235 INFO L226 Difference]: Without dead ends: 3776 [2024-10-24 18:28:38,236 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 18:28:38,236 INFO L432 NwaCegarLoop]: 1839 mSDtfsCounter, 1726 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 1613 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1736 SdHoareTripleChecker+Valid, 2417 SdHoareTripleChecker+Invalid, 1712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-24 18:28:38,236 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1736 Valid, 2417 Invalid, 1712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1613 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-24 18:28:38,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2024-10-24 18:28:38,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 3048. [2024-10-24 18:28:38,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3048 states, 2063 states have (on average 2.1396025206010663) internal successors, (4414), 3023 states have internal predecessors, (4414), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-10-24 18:28:38,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3048 states to 3048 states and 4464 transitions. [2024-10-24 18:28:38,279 INFO L78 Accepts]: Start accepts. Automaton has 3048 states and 4464 transitions. Word has length 7 [2024-10-24 18:28:38,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 18:28:38,280 INFO L471 AbstractCegarLoop]: Abstraction has 3048 states and 4464 transitions. [2024-10-24 18:28:38,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:28:38,280 INFO L276 IsEmpty]: Start isEmpty. Operand 3048 states and 4464 transitions. [2024-10-24 18:28:38,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-24 18:28:38,280 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 18:28:38,280 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:28:38,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2024-10-24 18:28:38,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:28:38,481 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-10-24 18:28:38,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:28:38,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1672914110, now seen corresponding path program 1 times [2024-10-24 18:28:38,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:28:38,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [954058195] [2024-10-24 18:28:38,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:28:38,483 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 [2024-10-24 18:28:38,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:28:38,485 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-24 18:28:38,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-24 18:28:38,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:28:38,628 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 18:28:38,632 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:28:38,639 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 [2024-10-24 18:28:38,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:28:38,659 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 18:28:38,659 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:28:38,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [954058195] [2024-10-24 18:28:38,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [954058195] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:28:38,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:28:38,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 18:28:38,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902164114] [2024-10-24 18:28:38,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:28:38,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 18:28:38,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:28:38,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 18:28:38,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 18:28:38,661 INFO L87 Difference]: Start difference. First operand 3048 states and 4464 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:28:41,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 18:28:41,930 INFO L93 Difference]: Finished difference Result 4617 states and 6688 transitions. [2024-10-24 18:28:41,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 18:28:41,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-10-24 18:28:41,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 18:28:41,944 INFO L225 Difference]: With dead ends: 4617 [2024-10-24 18:28:41,945 INFO L226 Difference]: Without dead ends: 4617 [2024-10-24 18:28:41,945 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 18:28:41,945 INFO L432 NwaCegarLoop]: 2133 mSDtfsCounter, 1285 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 1741 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1289 SdHoareTripleChecker+Valid, 3048 SdHoareTripleChecker+Invalid, 1766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-10-24 18:28:41,946 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1289 Valid, 3048 Invalid, 1766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1741 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-10-24 18:28:41,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4617 states. [2024-10-24 18:28:41,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4617 to 3316. [2024-10-24 18:28:41,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3316 states, 2341 states have (on average 2.126441691584793) internal successors, (4978), 3291 states have internal predecessors, (4978), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-10-24 18:28:42,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3316 states to 3316 states and 5028 transitions. [2024-10-24 18:28:42,009 INFO L78 Accepts]: Start accepts. Automaton has 3316 states and 5028 transitions. Word has length 7 [2024-10-24 18:28:42,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 18:28:42,010 INFO L471 AbstractCegarLoop]: Abstraction has 3316 states and 5028 transitions. [2024-10-24 18:28:42,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:28:42,010 INFO L276 IsEmpty]: Start isEmpty. Operand 3316 states and 5028 transitions. [2024-10-24 18:28:42,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-24 18:28:42,010 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 18:28:42,011 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:28:42,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-24 18:28:42,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:28:42,212 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr638REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-10-24 18:28:42,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:28:42,213 INFO L85 PathProgramCache]: Analyzing trace with hash -286775368, now seen corresponding path program 1 times [2024-10-24 18:28:42,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:28:42,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1762559346] [2024-10-24 18:28:42,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:28:42,214 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 [2024-10-24 18:28:42,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:28:42,217 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-24 18:28:42,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-24 18:28:42,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:28:42,342 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 18:28:42,343 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:28:42,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:28:42,353 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 18:28:42,353 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:28:42,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1762559346] [2024-10-24 18:28:42,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1762559346] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:28:42,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:28:42,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 18:28:42,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798366402] [2024-10-24 18:28:42,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:28:42,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 18:28:42,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:28:42,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 18:28:42,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 18:28:42,355 INFO L87 Difference]: Start difference. First operand 3316 states and 5028 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:28:43,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 18:28:43,202 INFO L93 Difference]: Finished difference Result 3262 states and 4948 transitions. [2024-10-24 18:28:43,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 18:28:43,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-10-24 18:28:43,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 18:28:43,212 INFO L225 Difference]: With dead ends: 3262 [2024-10-24 18:28:43,212 INFO L226 Difference]: Without dead ends: 3262 [2024-10-24 18:28:43,213 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 18:28:43,213 INFO L432 NwaCegarLoop]: 1805 mSDtfsCounter, 61 mSDsluCounter, 1763 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 3568 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-24 18:28:43,213 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 3568 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-24 18:28:43,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3262 states. [2024-10-24 18:28:43,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3262 to 3262. [2024-10-24 18:28:43,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3262 states, 2311 states have (on average 2.119428818693206) internal successors, (4898), 3237 states have internal predecessors, (4898), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-10-24 18:28:43,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3262 states to 3262 states and 4948 transitions. [2024-10-24 18:28:43,257 INFO L78 Accepts]: Start accepts. Automaton has 3262 states and 4948 transitions. Word has length 10 [2024-10-24 18:28:43,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 18:28:43,257 INFO L471 AbstractCegarLoop]: Abstraction has 3262 states and 4948 transitions. [2024-10-24 18:28:43,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:28:43,258 INFO L276 IsEmpty]: Start isEmpty. Operand 3262 states and 4948 transitions. [2024-10-24 18:28:43,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-24 18:28:43,258 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 18:28:43,258 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:28:43,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-24 18:28:43,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:28:43,459 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr662REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-10-24 18:28:43,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:28:43,459 INFO L85 PathProgramCache]: Analyzing trace with hash -713168110, now seen corresponding path program 1 times [2024-10-24 18:28:43,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:28:43,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [800895038] [2024-10-24 18:28:43,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:28:43,460 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 [2024-10-24 18:28:43,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:28:43,464 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-24 18:28:43,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-24 18:28:43,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:28:43,609 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 18:28:43,611 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:28:43,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:28:43,634 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 18:28:43,634 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:28:43,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [800895038] [2024-10-24 18:28:43,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [800895038] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:28:43,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:28:43,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 18:28:43,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476805503] [2024-10-24 18:28:43,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:28:43,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 18:28:43,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:28:43,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 18:28:43,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 18:28:43,637 INFO L87 Difference]: Start difference. First operand 3262 states and 4948 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:28:44,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 18:28:44,757 INFO L93 Difference]: Finished difference Result 3246 states and 4904 transitions. [2024-10-24 18:28:44,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 18:28:44,759 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-10-24 18:28:44,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 18:28:44,767 INFO L225 Difference]: With dead ends: 3246 [2024-10-24 18:28:44,768 INFO L226 Difference]: Without dead ends: 3246 [2024-10-24 18:28:44,768 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 18:28:44,768 INFO L432 NwaCegarLoop]: 1774 mSDtfsCounter, 45 mSDsluCounter, 3530 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 5304 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-24 18:28:44,769 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 5304 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-24 18:28:44,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3246 states. [2024-10-24 18:28:44,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3246 to 3246. [2024-10-24 18:28:44,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3246 states, 2309 states have (on average 2.1022087483759204) internal successors, (4854), 3221 states have internal predecessors, (4854), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-10-24 18:28:44,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3246 states to 3246 states and 4904 transitions. [2024-10-24 18:28:44,810 INFO L78 Accepts]: Start accepts. Automaton has 3246 states and 4904 transitions. Word has length 12 [2024-10-24 18:28:44,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 18:28:44,810 INFO L471 AbstractCegarLoop]: Abstraction has 3246 states and 4904 transitions. [2024-10-24 18:28:44,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:28:44,810 INFO L276 IsEmpty]: Start isEmpty. Operand 3246 states and 4904 transitions. [2024-10-24 18:28:44,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-24 18:28:44,811 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 18:28:44,811 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:28:44,815 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-24 18:28:45,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:28:45,013 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr324REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-10-24 18:28:45,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:28:45,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1884128953, now seen corresponding path program 1 times [2024-10-24 18:28:45,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:28:45,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [134164806] [2024-10-24 18:28:45,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:28:45,014 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 [2024-10-24 18:28:45,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:28:45,017 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-24 18:28:45,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-24 18:28:45,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:28:45,212 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 18:28:45,216 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:28:45,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:28:45,223 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 18:28:45,223 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:28:45,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [134164806] [2024-10-24 18:28:45,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [134164806] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:28:45,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:28:45,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 18:28:45,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254305858] [2024-10-24 18:28:45,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:28:45,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 18:28:45,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:28:45,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 18:28:45,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 18:28:45,225 INFO L87 Difference]: Start difference. First operand 3246 states and 4904 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:28:46,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 18:28:46,034 INFO L93 Difference]: Finished difference Result 3132 states and 4664 transitions. [2024-10-24 18:28:46,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 18:28:46,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-10-24 18:28:46,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 18:28:46,044 INFO L225 Difference]: With dead ends: 3132 [2024-10-24 18:28:46,045 INFO L226 Difference]: Without dead ends: 3132 [2024-10-24 18:28:46,045 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 18:28:46,045 INFO L432 NwaCegarLoop]: 1747 mSDtfsCounter, 61 mSDsluCounter, 1705 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 3452 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-24 18:28:46,046 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 3452 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-24 18:28:46,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3132 states. [2024-10-24 18:28:46,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3132 to 3132. [2024-10-24 18:28:46,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3132 states, 2219 states have (on average 2.079315006759802) internal successors, (4614), 3107 states have internal predecessors, (4614), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-10-24 18:28:46,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3132 states to 3132 states and 4664 transitions. [2024-10-24 18:28:46,082 INFO L78 Accepts]: Start accepts. Automaton has 3132 states and 4664 transitions. Word has length 17 [2024-10-24 18:28:46,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 18:28:46,082 INFO L471 AbstractCegarLoop]: Abstraction has 3132 states and 4664 transitions. [2024-10-24 18:28:46,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:28:46,082 INFO L276 IsEmpty]: Start isEmpty. Operand 3132 states and 4664 transitions. [2024-10-24 18:28:46,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-24 18:28:46,083 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 18:28:46,083 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:28:46,090 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-10-24 18:28:46,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:28:46,288 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-10-24 18:28:46,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:28:46,289 INFO L85 PathProgramCache]: Analyzing trace with hash -2141973639, now seen corresponding path program 1 times [2024-10-24 18:28:46,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:28:46,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [343534457] [2024-10-24 18:28:46,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:28:46,289 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 [2024-10-24 18:28:46,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:28:46,291 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-24 18:28:46,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-24 18:28:46,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:28:46,445 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 18:28:46,447 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:28:46,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:28:46,454 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 18:28:46,454 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:28:46,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [343534457] [2024-10-24 18:28:46,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [343534457] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:28:46,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:28:46,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 18:28:46,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468947490] [2024-10-24 18:28:46,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:28:46,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 18:28:46,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:28:46,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 18:28:46,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 18:28:46,455 INFO L87 Difference]: Start difference. First operand 3132 states and 4664 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:28:47,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 18:28:47,248 INFO L93 Difference]: Finished difference Result 3078 states and 4584 transitions. [2024-10-24 18:28:47,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 18:28:47,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-10-24 18:28:47,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 18:28:47,255 INFO L225 Difference]: With dead ends: 3078 [2024-10-24 18:28:47,255 INFO L226 Difference]: Without dead ends: 3078 [2024-10-24 18:28:47,255 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 18:28:47,256 INFO L432 NwaCegarLoop]: 1710 mSDtfsCounter, 61 mSDsluCounter, 1668 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 3378 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-24 18:28:47,256 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 3378 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-24 18:28:47,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3078 states. [2024-10-24 18:28:47,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3078 to 3078. [2024-10-24 18:28:47,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3078 states, 2189 states have (on average 2.0712654179990864) internal successors, (4534), 3053 states have internal predecessors, (4534), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-10-24 18:28:47,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3078 states to 3078 states and 4584 transitions. [2024-10-24 18:28:47,288 INFO L78 Accepts]: Start accepts. Automaton has 3078 states and 4584 transitions. Word has length 17 [2024-10-24 18:28:47,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 18:28:47,288 INFO L471 AbstractCegarLoop]: Abstraction has 3078 states and 4584 transitions. [2024-10-24 18:28:47,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:28:47,289 INFO L276 IsEmpty]: Start isEmpty. Operand 3078 states and 4584 transitions. [2024-10-24 18:28:47,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-24 18:28:47,289 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 18:28:47,289 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:28:47,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-24 18:28:47,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:28:47,494 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr348REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-10-24 18:28:47,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:28:47,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1828249453, now seen corresponding path program 1 times [2024-10-24 18:28:47,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:28:47,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1097987592] [2024-10-24 18:28:47,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:28:47,495 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 [2024-10-24 18:28:47,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:28:47,497 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-24 18:28:47,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-24 18:28:47,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:28:47,651 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 18:28:47,653 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:28:47,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:28:47,670 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 18:28:47,670 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:28:47,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1097987592] [2024-10-24 18:28:47,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1097987592] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:28:47,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:28:47,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 18:28:47,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48408322] [2024-10-24 18:28:47,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:28:47,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 18:28:47,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:28:47,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 18:28:47,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 18:28:47,671 INFO L87 Difference]: Start difference. First operand 3078 states and 4584 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:28:48,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 18:28:48,664 INFO L93 Difference]: Finished difference Result 3058 states and 4452 transitions. [2024-10-24 18:28:48,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 18:28:48,666 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-10-24 18:28:48,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 18:28:48,671 INFO L225 Difference]: With dead ends: 3058 [2024-10-24 18:28:48,671 INFO L226 Difference]: Without dead ends: 3058 [2024-10-24 18:28:48,671 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 18:28:48,671 INFO L432 NwaCegarLoop]: 1679 mSDtfsCounter, 45 mSDsluCounter, 3340 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 5019 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-24 18:28:48,672 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 5019 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-24 18:28:48,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3058 states. [2024-10-24 18:28:48,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3058 to 3058. [2024-10-24 18:28:48,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3058 states, 2183 states have (on average 2.016491067338525) internal successors, (4402), 3033 states have internal predecessors, (4402), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-10-24 18:28:48,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3058 states to 3058 states and 4452 transitions. [2024-10-24 18:28:48,706 INFO L78 Accepts]: Start accepts. Automaton has 3058 states and 4452 transitions. Word has length 19 [2024-10-24 18:28:48,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 18:28:48,706 INFO L471 AbstractCegarLoop]: Abstraction has 3058 states and 4452 transitions. [2024-10-24 18:28:48,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:28:48,706 INFO L276 IsEmpty]: Start isEmpty. Operand 3058 states and 4452 transitions. [2024-10-24 18:28:48,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-24 18:28:48,707 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 18:28:48,707 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:28:48,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2024-10-24 18:28:48,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:28:48,907 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-10-24 18:28:48,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:28:48,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1147334253, now seen corresponding path program 1 times [2024-10-24 18:28:48,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:28:48,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [568996315] [2024-10-24 18:28:48,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:28:48,909 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 [2024-10-24 18:28:48,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:28:48,910 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-24 18:28:48,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-24 18:28:49,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:28:49,069 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 18:28:49,071 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:28:49,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:28:49,084 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 18:28:49,084 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:28:49,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [568996315] [2024-10-24 18:28:49,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [568996315] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:28:49,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:28:49,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 18:28:49,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262491927] [2024-10-24 18:28:49,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:28:49,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 18:28:49,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:28:49,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 18:28:49,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 18:28:49,085 INFO L87 Difference]: Start difference. First operand 3058 states and 4452 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:28:50,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 18:28:50,057 INFO L93 Difference]: Finished difference Result 3042 states and 4408 transitions. [2024-10-24 18:28:50,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 18:28:50,058 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-10-24 18:28:50,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 18:28:50,064 INFO L225 Difference]: With dead ends: 3042 [2024-10-24 18:28:50,064 INFO L226 Difference]: Without dead ends: 3042 [2024-10-24 18:28:50,064 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 18:28:50,065 INFO L432 NwaCegarLoop]: 1658 mSDtfsCounter, 45 mSDsluCounter, 3298 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 4956 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-24 18:28:50,065 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 4956 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-24 18:28:50,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3042 states. [2024-10-24 18:28:50,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3042 to 3042. [2024-10-24 18:28:50,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3042 states, 2181 states have (on average 1.9981659789087574) internal successors, (4358), 3017 states have internal predecessors, (4358), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-10-24 18:28:50,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3042 states to 3042 states and 4408 transitions. [2024-10-24 18:28:50,099 INFO L78 Accepts]: Start accepts. Automaton has 3042 states and 4408 transitions. Word has length 19 [2024-10-24 18:28:50,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 18:28:50,099 INFO L471 AbstractCegarLoop]: Abstraction has 3042 states and 4408 transitions. [2024-10-24 18:28:50,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:28:50,100 INFO L276 IsEmpty]: Start isEmpty. Operand 3042 states and 4408 transitions. [2024-10-24 18:28:50,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-24 18:28:50,100 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 18:28:50,100 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:28:50,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2024-10-24 18:28:50,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:28:50,301 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr676REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-10-24 18:28:50,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:28:50,301 INFO L85 PathProgramCache]: Analyzing trace with hash 303308928, now seen corresponding path program 1 times [2024-10-24 18:28:50,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:28:50,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1378730555] [2024-10-24 18:28:50,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:28:50,302 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 [2024-10-24 18:28:50,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:28:50,303 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-24 18:28:50,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-24 18:28:50,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:28:50,452 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 18:28:50,455 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:28:50,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-24 18:28:50,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:28:50,520 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 18:28:50,520 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:28:50,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1378730555] [2024-10-24 18:28:50,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1378730555] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:28:50,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:28:50,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 18:28:50,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644305270] [2024-10-24 18:28:50,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:28:50,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 18:28:50,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:28:50,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 18:28:50,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 18:28:50,521 INFO L87 Difference]: Start difference. First operand 3042 states and 4408 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:28:52,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 18:28:52,940 INFO L93 Difference]: Finished difference Result 3460 states and 4733 transitions. [2024-10-24 18:28:52,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 18:28:52,940 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-10-24 18:28:52,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 18:28:52,946 INFO L225 Difference]: With dead ends: 3460 [2024-10-24 18:28:52,946 INFO L226 Difference]: Without dead ends: 3460 [2024-10-24 18:28:52,946 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 18:28:52,947 INFO L432 NwaCegarLoop]: 1048 mSDtfsCounter, 1666 mSDsluCounter, 1306 mSDsCounter, 0 mSdLazyCounter, 2106 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1676 SdHoareTripleChecker+Valid, 2354 SdHoareTripleChecker+Invalid, 2117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-24 18:28:52,948 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1676 Valid, 2354 Invalid, 2117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2106 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-24 18:28:52,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3460 states. [2024-10-24 18:28:52,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3460 to 3038. [2024-10-24 18:28:52,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3038 states, 2181 states have (on average 1.9944979367262723) internal successors, (4350), 3013 states have internal predecessors, (4350), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-10-24 18:28:52,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3038 states to 3038 states and 4400 transitions. [2024-10-24 18:28:52,999 INFO L78 Accepts]: Start accepts. Automaton has 3038 states and 4400 transitions. Word has length 26 [2024-10-24 18:28:53,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 18:28:53,000 INFO L471 AbstractCegarLoop]: Abstraction has 3038 states and 4400 transitions. [2024-10-24 18:28:53,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:28:53,000 INFO L276 IsEmpty]: Start isEmpty. Operand 3038 states and 4400 transitions. [2024-10-24 18:28:53,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-24 18:28:53,003 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 18:28:53,003 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:28:53,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-24 18:28:53,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:28:53,204 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr677REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-10-24 18:28:53,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:28:53,205 INFO L85 PathProgramCache]: Analyzing trace with hash 303308929, now seen corresponding path program 1 times [2024-10-24 18:28:53,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:28:53,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [429465137] [2024-10-24 18:28:53,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:28:53,205 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 [2024-10-24 18:28:53,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:28:53,208 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-24 18:28:53,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-24 18:28:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:28:53,342 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 18:28:53,344 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:28:53,356 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 [2024-10-24 18:28:53,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:28:53,455 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 18:28:53,455 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:28:53,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [429465137] [2024-10-24 18:28:53,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [429465137] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:28:53,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:28:53,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 18:28:53,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431007157] [2024-10-24 18:28:53,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:28:53,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 18:28:53,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:28:53,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 18:28:53,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 18:28:53,457 INFO L87 Difference]: Start difference. First operand 3038 states and 4400 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:28:56,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 18:28:56,779 INFO L93 Difference]: Finished difference Result 3706 states and 5140 transitions. [2024-10-24 18:28:56,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 18:28:56,779 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-10-24 18:28:56,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 18:28:56,784 INFO L225 Difference]: With dead ends: 3706 [2024-10-24 18:28:56,784 INFO L226 Difference]: Without dead ends: 3706 [2024-10-24 18:28:56,786 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 18:28:56,786 INFO L432 NwaCegarLoop]: 1435 mSDtfsCounter, 737 mSDsluCounter, 1814 mSDsCounter, 0 mSdLazyCounter, 2335 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 3249 SdHoareTripleChecker+Invalid, 2338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-10-24 18:28:56,786 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 3249 Invalid, 2338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2335 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-10-24 18:28:56,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3706 states. [2024-10-24 18:28:56,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3706 to 3071. [2024-10-24 18:28:56,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3071 states, 2214 states have (on average 1.98193315266486) internal successors, (4388), 3046 states have internal predecessors, (4388), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-10-24 18:28:56,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3071 states to 3071 states and 4438 transitions. [2024-10-24 18:28:56,815 INFO L78 Accepts]: Start accepts. Automaton has 3071 states and 4438 transitions. Word has length 26 [2024-10-24 18:28:56,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 18:28:56,816 INFO L471 AbstractCegarLoop]: Abstraction has 3071 states and 4438 transitions. [2024-10-24 18:28:56,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:28:56,816 INFO L276 IsEmpty]: Start isEmpty. Operand 3071 states and 4438 transitions. [2024-10-24 18:28:56,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-10-24 18:28:56,819 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 18:28:56,819 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:28:56,823 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2024-10-24 18:28:57,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:28:57,020 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr362REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-10-24 18:28:57,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:28:57,021 INFO L85 PathProgramCache]: Analyzing trace with hash 575845249, now seen corresponding path program 1 times [2024-10-24 18:28:57,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:28:57,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1348686987] [2024-10-24 18:28:57,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:28:57,022 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 [2024-10-24 18:28:57,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:28:57,024 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-24 18:28:57,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-24 18:28:57,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:28:57,188 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 18:28:57,190 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:28:57,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-24 18:28:57,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:28:57,236 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 18:28:57,237 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:28:57,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1348686987] [2024-10-24 18:28:57,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1348686987] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:28:57,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:28:57,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 18:28:57,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157160583] [2024-10-24 18:28:57,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:28:57,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 18:28:57,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:28:57,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 18:28:57,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 18:28:57,238 INFO L87 Difference]: Start difference. First operand 3071 states and 4438 transitions. Second operand has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:28:59,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 18:28:59,895 INFO L93 Difference]: Finished difference Result 3724 states and 5139 transitions. [2024-10-24 18:28:59,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 18:28:59,895 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-10-24 18:28:59,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 18:28:59,900 INFO L225 Difference]: With dead ends: 3724 [2024-10-24 18:28:59,901 INFO L226 Difference]: Without dead ends: 3724 [2024-10-24 18:28:59,901 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 18:28:59,901 INFO L432 NwaCegarLoop]: 1679 mSDtfsCounter, 1526 mSDsluCounter, 1852 mSDsCounter, 0 mSdLazyCounter, 2675 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 3531 SdHoareTripleChecker+Invalid, 2686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-24 18:28:59,901 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1536 Valid, 3531 Invalid, 2686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2675 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-24 18:28:59,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3724 states. [2024-10-24 18:28:59,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3724 to 3067. [2024-10-24 18:28:59,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3067 states, 2214 states have (on average 1.971093044263776) internal successors, (4364), 3042 states have internal predecessors, (4364), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-10-24 18:28:59,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3067 states to 3067 states and 4414 transitions. [2024-10-24 18:28:59,936 INFO L78 Accepts]: Start accepts. Automaton has 3067 states and 4414 transitions. Word has length 33 [2024-10-24 18:28:59,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 18:28:59,938 INFO L471 AbstractCegarLoop]: Abstraction has 3067 states and 4414 transitions. [2024-10-24 18:28:59,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:28:59,938 INFO L276 IsEmpty]: Start isEmpty. Operand 3067 states and 4414 transitions. [2024-10-24 18:28:59,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-10-24 18:28:59,938 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 18:28:59,938 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:28:59,948 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2024-10-24 18:29:00,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:29:00,139 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr363REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-10-24 18:29:00,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:29:00,140 INFO L85 PathProgramCache]: Analyzing trace with hash 575845250, now seen corresponding path program 1 times [2024-10-24 18:29:00,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:29:00,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1212718021] [2024-10-24 18:29:00,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:29:00,140 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:29:00,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:29:00,143 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-24 18:29:00,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-24 18:29:00,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:29:00,311 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 18:29:00,313 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:29:00,319 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 [2024-10-24 18:29:00,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:29:00,452 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 18:29:00,452 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:29:00,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1212718021] [2024-10-24 18:29:00,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1212718021] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:29:00,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:29:00,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 18:29:00,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924271210] [2024-10-24 18:29:00,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:29:00,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 18:29:00,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:29:00,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 18:29:00,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 18:29:00,453 INFO L87 Difference]: Start difference. First operand 3067 states and 4414 transitions. Second operand has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:29:04,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 18:29:04,242 INFO L93 Difference]: Finished difference Result 4256 states and 5942 transitions. [2024-10-24 18:29:04,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 18:29:04,243 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-10-24 18:29:04,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 18:29:04,248 INFO L225 Difference]: With dead ends: 4256 [2024-10-24 18:29:04,248 INFO L226 Difference]: Without dead ends: 4256 [2024-10-24 18:29:04,248 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 18:29:04,249 INFO L432 NwaCegarLoop]: 1975 mSDtfsCounter, 1081 mSDsluCounter, 2187 mSDsCounter, 0 mSdLazyCounter, 2796 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 4162 SdHoareTripleChecker+Invalid, 2799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-10-24 18:29:04,249 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1085 Valid, 4162 Invalid, 2799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2796 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-10-24 18:29:04,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4256 states. [2024-10-24 18:29:04,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4256 to 3067. [2024-10-24 18:29:04,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3067 states, 2214 states have (on average 1.967479674796748) internal successors, (4356), 3042 states have internal predecessors, (4356), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-10-24 18:29:04,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3067 states to 3067 states and 4406 transitions. [2024-10-24 18:29:04,287 INFO L78 Accepts]: Start accepts. Automaton has 3067 states and 4406 transitions. Word has length 33 [2024-10-24 18:29:04,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 18:29:04,287 INFO L471 AbstractCegarLoop]: Abstraction has 3067 states and 4406 transitions. [2024-10-24 18:29:04,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:29:04,287 INFO L276 IsEmpty]: Start isEmpty. Operand 3067 states and 4406 transitions. [2024-10-24 18:29:04,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-10-24 18:29:04,288 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 18:29:04,288 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:29:04,294 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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)] Ended with exit code 0 [2024-10-24 18:29:04,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:29:04,488 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-10-24 18:29:04,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:29:04,489 INFO L85 PathProgramCache]: Analyzing trace with hash 601006657, now seen corresponding path program 1 times [2024-10-24 18:29:04,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:29:04,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [549679130] [2024-10-24 18:29:04,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:29:04,490 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 [2024-10-24 18:29:04,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:29:04,491 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-24 18:29:04,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-24 18:29:04,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:29:04,651 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 18:29:04,653 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:29:04,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-24 18:29:04,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:29:04,703 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 18:29:04,703 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:29:04,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [549679130] [2024-10-24 18:29:04,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [549679130] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:29:04,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:29:04,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 18:29:04,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144825360] [2024-10-24 18:29:04,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:29:04,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 18:29:04,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:29:04,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 18:29:04,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 18:29:04,704 INFO L87 Difference]: Start difference. First operand 3067 states and 4406 transitions. Second operand has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:29:07,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 18:29:07,358 INFO L93 Difference]: Finished difference Result 3704 states and 5107 transitions. [2024-10-24 18:29:07,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 18:29:07,359 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-10-24 18:29:07,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 18:29:07,363 INFO L225 Difference]: With dead ends: 3704 [2024-10-24 18:29:07,363 INFO L226 Difference]: Without dead ends: 3704 [2024-10-24 18:29:07,363 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 18:29:07,364 INFO L432 NwaCegarLoop]: 1679 mSDtfsCounter, 1522 mSDsluCounter, 1852 mSDsCounter, 0 mSdLazyCounter, 2667 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1532 SdHoareTripleChecker+Valid, 3531 SdHoareTripleChecker+Invalid, 2678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-24 18:29:07,364 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1532 Valid, 3531 Invalid, 2678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2667 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-24 18:29:07,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3704 states. [2024-10-24 18:29:07,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3704 to 3063. [2024-10-24 18:29:07,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3063 states, 2214 states have (on average 1.96386630532972) internal successors, (4348), 3038 states have internal predecessors, (4348), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-10-24 18:29:07,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3063 states to 3063 states and 4398 transitions. [2024-10-24 18:29:07,392 INFO L78 Accepts]: Start accepts. Automaton has 3063 states and 4398 transitions. Word has length 33 [2024-10-24 18:29:07,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 18:29:07,392 INFO L471 AbstractCegarLoop]: Abstraction has 3063 states and 4398 transitions. [2024-10-24 18:29:07,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:29:07,393 INFO L276 IsEmpty]: Start isEmpty. Operand 3063 states and 4398 transitions. [2024-10-24 18:29:07,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-10-24 18:29:07,393 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 18:29:07,393 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:29:07,400 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-24 18:29:07,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:29:07,594 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-10-24 18:29:07,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:29:07,594 INFO L85 PathProgramCache]: Analyzing trace with hash 601006658, now seen corresponding path program 1 times [2024-10-24 18:29:07,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:29:07,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1861447467] [2024-10-24 18:29:07,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:29:07,595 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 [2024-10-24 18:29:07,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:29:07,598 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-24 18:29:07,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-24 18:29:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:29:07,773 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 18:29:07,775 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:29:07,779 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 [2024-10-24 18:29:07,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:29:07,878 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 18:29:07,879 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:29:07,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1861447467] [2024-10-24 18:29:07,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1861447467] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:29:07,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:29:07,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 18:29:07,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019010132] [2024-10-24 18:29:07,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:29:07,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 18:29:07,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:29:07,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 18:29:07,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 18:29:07,880 INFO L87 Difference]: Start difference. First operand 3063 states and 4398 transitions. Second operand has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:29:11,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 18:29:11,697 INFO L93 Difference]: Finished difference Result 4248 states and 5926 transitions. [2024-10-24 18:29:11,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 18:29:11,697 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-10-24 18:29:11,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 18:29:11,701 INFO L225 Difference]: With dead ends: 4248 [2024-10-24 18:29:11,702 INFO L226 Difference]: Without dead ends: 4248 [2024-10-24 18:29:11,702 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 18:29:11,702 INFO L432 NwaCegarLoop]: 1971 mSDtfsCounter, 1073 mSDsluCounter, 2156 mSDsCounter, 0 mSdLazyCounter, 2784 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1077 SdHoareTripleChecker+Valid, 4127 SdHoareTripleChecker+Invalid, 2787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-10-24 18:29:11,702 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1077 Valid, 4127 Invalid, 2787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2784 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-10-24 18:29:11,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4248 states. [2024-10-24 18:29:11,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4248 to 3059. [2024-10-24 18:29:11,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3059 states, 2214 states have (on average 1.960252935862692) internal successors, (4340), 3034 states have internal predecessors, (4340), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-10-24 18:29:11,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3059 states to 3059 states and 4390 transitions. [2024-10-24 18:29:11,736 INFO L78 Accepts]: Start accepts. Automaton has 3059 states and 4390 transitions. Word has length 33 [2024-10-24 18:29:11,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 18:29:11,736 INFO L471 AbstractCegarLoop]: Abstraction has 3059 states and 4390 transitions. [2024-10-24 18:29:11,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:29:11,736 INFO L276 IsEmpty]: Start isEmpty. Operand 3059 states and 4390 transitions. [2024-10-24 18:29:11,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-24 18:29:11,737 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 18:29:11,737 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:29:11,742 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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)] Ended with exit code 0 [2024-10-24 18:29:11,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:29:11,938 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr684REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-10-24 18:29:11,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:29:11,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1877036666, now seen corresponding path program 1 times [2024-10-24 18:29:11,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:29:11,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1254587459] [2024-10-24 18:29:11,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:29:11,939 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 [2024-10-24 18:29:11,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:29:11,941 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-24 18:29:11,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-24 18:29:12,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:29:12,109 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 18:29:12,110 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:29:12,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:29:12,153 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 18:29:12,154 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:29:12,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1254587459] [2024-10-24 18:29:12,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1254587459] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:29:12,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:29:12,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 18:29:12,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953885979] [2024-10-24 18:29:12,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:29:12,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 18:29:12,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:29:12,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 18:29:12,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 18:29:12,155 INFO L87 Difference]: Start difference. First operand 3059 states and 4390 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:29:13,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 18:29:13,200 INFO L93 Difference]: Finished difference Result 3047 states and 4366 transitions. [2024-10-24 18:29:13,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 18:29:13,201 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-10-24 18:29:13,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 18:29:13,204 INFO L225 Difference]: With dead ends: 3047 [2024-10-24 18:29:13,204 INFO L226 Difference]: Without dead ends: 3047 [2024-10-24 18:29:13,204 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 18:29:13,205 INFO L432 NwaCegarLoop]: 1644 mSDtfsCounter, 21 mSDsluCounter, 3265 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 4909 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-24 18:29:13,205 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 4909 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-24 18:29:13,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3047 states. [2024-10-24 18:29:13,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3047 to 3047. [2024-10-24 18:29:13,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3047 states, 2202 states have (on average 1.9600363306085378) internal successors, (4316), 3022 states have internal predecessors, (4316), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-10-24 18:29:13,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3047 states to 3047 states and 4366 transitions. [2024-10-24 18:29:13,230 INFO L78 Accepts]: Start accepts. Automaton has 3047 states and 4366 transitions. Word has length 40 [2024-10-24 18:29:13,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 18:29:13,230 INFO L471 AbstractCegarLoop]: Abstraction has 3047 states and 4366 transitions. [2024-10-24 18:29:13,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:29:13,230 INFO L276 IsEmpty]: Start isEmpty. Operand 3047 states and 4366 transitions. [2024-10-24 18:29:13,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-10-24 18:29:13,231 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 18:29:13,231 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:29:13,239 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-24 18:29:13,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:29:13,435 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr684REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-10-24 18:29:13,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:29:13,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1228682057, now seen corresponding path program 1 times [2024-10-24 18:29:13,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:29:13,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [640651277] [2024-10-24 18:29:13,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:29:13,436 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 [2024-10-24 18:29:13,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:29:13,437 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-24 18:29:13,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-24 18:29:13,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:29:13,611 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 18:29:13,613 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:29:13,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:29:13,745 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 18:29:13,745 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:29:13,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [640651277] [2024-10-24 18:29:13,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [640651277] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:29:13,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:29:13,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 18:29:13,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124789990] [2024-10-24 18:29:13,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:29:13,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 18:29:13,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:29:13,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 18:29:13,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 18:29:13,746 INFO L87 Difference]: Start difference. First operand 3047 states and 4366 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:29:14,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 18:29:14,886 INFO L93 Difference]: Finished difference Result 4508 states and 6234 transitions. [2024-10-24 18:29:14,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 18:29:14,887 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-10-24 18:29:14,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 18:29:14,891 INFO L225 Difference]: With dead ends: 4508 [2024-10-24 18:29:14,891 INFO L226 Difference]: Without dead ends: 4508 [2024-10-24 18:29:14,891 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 18:29:14,892 INFO L432 NwaCegarLoop]: 1712 mSDtfsCounter, 1175 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1182 SdHoareTripleChecker+Valid, 3274 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-24 18:29:14,892 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1182 Valid, 3274 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-24 18:29:14,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4508 states. [2024-10-24 18:29:14,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4508 to 3928. [2024-10-24 18:29:14,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3928 states, 3076 states have (on average 1.944408322496749) internal successors, (5981), 3893 states have internal predecessors, (5981), 35 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2024-10-24 18:29:14,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3928 states to 3928 states and 6051 transitions. [2024-10-24 18:29:14,928 INFO L78 Accepts]: Start accepts. Automaton has 3928 states and 6051 transitions. Word has length 44 [2024-10-24 18:29:14,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 18:29:14,928 INFO L471 AbstractCegarLoop]: Abstraction has 3928 states and 6051 transitions. [2024-10-24 18:29:14,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:29:14,929 INFO L276 IsEmpty]: Start isEmpty. Operand 3928 states and 6051 transitions. [2024-10-24 18:29:14,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-24 18:29:14,929 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 18:29:14,929 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:29:14,935 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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)] Ended with exit code 0 [2024-10-24 18:29:15,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:29:15,131 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr427REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-10-24 18:29:15,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:29:15,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1257793787, now seen corresponding path program 1 times [2024-10-24 18:29:15,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:29:15,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [886188627] [2024-10-24 18:29:15,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:29:15,132 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 [2024-10-24 18:29:15,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:29:15,135 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-24 18:29:15,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2024-10-24 18:29:15,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:29:15,351 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 18:29:15,353 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:29:15,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:29:15,384 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 18:29:15,385 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:29:15,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [886188627] [2024-10-24 18:29:15,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [886188627] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:29:15,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:29:15,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 18:29:15,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088206281] [2024-10-24 18:29:15,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:29:15,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 18:29:15,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:29:15,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 18:29:15,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 18:29:15,386 INFO L87 Difference]: Start difference. First operand 3928 states and 6051 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:29:16,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 18:29:16,472 INFO L93 Difference]: Finished difference Result 3886 states and 5981 transitions. [2024-10-24 18:29:16,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 18:29:16,473 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-10-24 18:29:16,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 18:29:16,477 INFO L225 Difference]: With dead ends: 3886 [2024-10-24 18:29:16,477 INFO L226 Difference]: Without dead ends: 3886 [2024-10-24 18:29:16,478 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 18:29:16,479 INFO L432 NwaCegarLoop]: 1640 mSDtfsCounter, 21 mSDsluCounter, 3257 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 4897 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-24 18:29:16,479 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 4897 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-24 18:29:16,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3886 states. [2024-10-24 18:29:16,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3886 to 3886. [2024-10-24 18:29:16,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3886 states, 3034 states have (on average 1.9482531311799605) internal successors, (5911), 3851 states have internal predecessors, (5911), 35 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2024-10-24 18:29:16,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3886 states to 3886 states and 5981 transitions. [2024-10-24 18:29:16,519 INFO L78 Accepts]: Start accepts. Automaton has 3886 states and 5981 transitions. Word has length 49 [2024-10-24 18:29:16,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 18:29:16,519 INFO L471 AbstractCegarLoop]: Abstraction has 3886 states and 5981 transitions. [2024-10-24 18:29:16,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:29:16,520 INFO L276 IsEmpty]: Start isEmpty. Operand 3886 states and 5981 transitions. [2024-10-24 18:29:16,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-24 18:29:16,520 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 18:29:16,520 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:29:16,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2024-10-24 18:29:16,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:29:16,722 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-10-24 18:29:16,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:29:16,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1745245856, now seen corresponding path program 1 times [2024-10-24 18:29:16,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:29:16,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [482601288] [2024-10-24 18:29:16,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:29:16,723 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 [2024-10-24 18:29:16,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:29:16,725 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-24 18:29:16,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-24 18:29:16,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:29:16,985 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 18:29:16,987 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:29:17,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:29:17,014 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 18:29:17,014 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:29:17,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [482601288] [2024-10-24 18:29:17,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [482601288] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:29:17,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:29:17,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 18:29:17,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100289429] [2024-10-24 18:29:17,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:29:17,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 18:29:17,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:29:17,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 18:29:17,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 18:29:17,015 INFO L87 Difference]: Start difference. First operand 3886 states and 5981 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:29:18,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 18:29:18,009 INFO L93 Difference]: Finished difference Result 3868 states and 5951 transitions. [2024-10-24 18:29:18,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 18:29:18,010 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-10-24 18:29:18,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 18:29:18,014 INFO L225 Difference]: With dead ends: 3868 [2024-10-24 18:29:18,014 INFO L226 Difference]: Without dead ends: 3868 [2024-10-24 18:29:18,014 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 18:29:18,015 INFO L432 NwaCegarLoop]: 1636 mSDtfsCounter, 15 mSDsluCounter, 3255 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 4891 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-24 18:29:18,015 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 4891 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-24 18:29:18,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3868 states. [2024-10-24 18:29:18,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3868 to 3868. [2024-10-24 18:29:18,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3868 states, 3016 states have (on average 1.9499336870026525) internal successors, (5881), 3833 states have internal predecessors, (5881), 35 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2024-10-24 18:29:18,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3868 states to 3868 states and 5951 transitions. [2024-10-24 18:29:18,050 INFO L78 Accepts]: Start accepts. Automaton has 3868 states and 5951 transitions. Word has length 52 [2024-10-24 18:29:18,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 18:29:18,050 INFO L471 AbstractCegarLoop]: Abstraction has 3868 states and 5951 transitions. [2024-10-24 18:29:18,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:29:18,051 INFO L276 IsEmpty]: Start isEmpty. Operand 3868 states and 5951 transitions. [2024-10-24 18:29:18,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-24 18:29:18,051 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 18:29:18,051 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:29:18,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2024-10-24 18:29:18,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:29:18,256 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-10-24 18:29:18,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:29:18,256 INFO L85 PathProgramCache]: Analyzing trace with hash -165141037, now seen corresponding path program 1 times [2024-10-24 18:29:18,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:29:18,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [597201521] [2024-10-24 18:29:18,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:29:18,257 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 [2024-10-24 18:29:18,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:29:18,258 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-24 18:29:18,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2024-10-24 18:29:18,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:29:18,487 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 18:29:18,489 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:29:18,497 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-24 18:29:18,498 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-24 18:29:18,499 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 33 treesize of output 31 [2024-10-24 18:29:18,527 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 18:29:18,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 22 [2024-10-24 18:29:18,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:29:18,557 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 18:29:18,557 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:29:18,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [597201521] [2024-10-24 18:29:18,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [597201521] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:29:18,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:29:18,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 18:29:18,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647768654] [2024-10-24 18:29:18,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:29:18,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 18:29:18,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:29:18,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 18:29:18,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 18:29:18,560 INFO L87 Difference]: Start difference. First operand 3868 states and 5951 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:29:20,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 18:29:20,669 INFO L93 Difference]: Finished difference Result 5120 states and 7760 transitions. [2024-10-24 18:29:20,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 18:29:20,670 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-10-24 18:29:20,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 18:29:20,675 INFO L225 Difference]: With dead ends: 5120 [2024-10-24 18:29:20,675 INFO L226 Difference]: Without dead ends: 5120 [2024-10-24 18:29:20,675 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 18:29:20,679 INFO L432 NwaCegarLoop]: 1590 mSDtfsCounter, 1535 mSDsluCounter, 2549 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 4139 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-24 18:29:20,679 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1544 Valid, 4139 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-24 18:29:20,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5120 states. [2024-10-24 18:29:20,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5120 to 3837. [2024-10-24 18:29:20,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3837 states, 2985 states have (on average 1.959463986599665) internal successors, (5849), 3802 states have internal predecessors, (5849), 35 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2024-10-24 18:29:20,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3837 states to 3837 states and 5919 transitions. [2024-10-24 18:29:20,717 INFO L78 Accepts]: Start accepts. Automaton has 3837 states and 5919 transitions. Word has length 55 [2024-10-24 18:29:20,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 18:29:20,717 INFO L471 AbstractCegarLoop]: Abstraction has 3837 states and 5919 transitions. [2024-10-24 18:29:20,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:29:20,717 INFO L276 IsEmpty]: Start isEmpty. Operand 3837 states and 5919 transitions. [2024-10-24 18:29:20,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-24 18:29:20,718 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 18:29:20,718 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:29:20,724 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2024-10-24 18:29:20,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:29:20,919 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr427REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-10-24 18:29:20,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:29:20,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1835739427, now seen corresponding path program 1 times [2024-10-24 18:29:20,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:29:20,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1152392422] [2024-10-24 18:29:20,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:29:20,919 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 [2024-10-24 18:29:20,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:29:20,921 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-24 18:29:20,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2024-10-24 18:29:21,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:29:21,142 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 18:29:21,144 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:29:21,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:29:21,303 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 18:29:21,303 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:29:21,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1152392422] [2024-10-24 18:29:21,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1152392422] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:29:21,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:29:21,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 18:29:21,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494035417] [2024-10-24 18:29:21,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:29:21,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 18:29:21,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:29:21,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 18:29:21,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 18:29:21,304 INFO L87 Difference]: Start difference. First operand 3837 states and 5919 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:29:22,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 18:29:22,367 INFO L93 Difference]: Finished difference Result 5288 states and 7837 transitions. [2024-10-24 18:29:22,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 18:29:22,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-10-24 18:29:22,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 18:29:22,373 INFO L225 Difference]: With dead ends: 5288 [2024-10-24 18:29:22,374 INFO L226 Difference]: Without dead ends: 5288 [2024-10-24 18:29:22,374 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 18:29:22,374 INFO L432 NwaCegarLoop]: 1936 mSDtfsCounter, 914 mSDsluCounter, 1590 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 3526 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-24 18:29:22,374 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [920 Valid, 3526 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-24 18:29:22,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5288 states. [2024-10-24 18:29:22,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5288 to 4758. [2024-10-24 18:29:22,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4758 states, 3898 states have (on average 1.9304771677783479) internal successors, (7525), 4712 states have internal predecessors, (7525), 46 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2024-10-24 18:29:22,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4758 states to 4758 states and 7617 transitions. [2024-10-24 18:29:22,416 INFO L78 Accepts]: Start accepts. Automaton has 4758 states and 7617 transitions. Word has length 53 [2024-10-24 18:29:22,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 18:29:22,416 INFO L471 AbstractCegarLoop]: Abstraction has 4758 states and 7617 transitions. [2024-10-24 18:29:22,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:29:22,416 INFO L276 IsEmpty]: Start isEmpty. Operand 4758 states and 7617 transitions. [2024-10-24 18:29:22,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-24 18:29:22,416 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 18:29:22,417 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:29:22,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2024-10-24 18:29:22,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:29:22,617 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr381REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-10-24 18:29:22,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:29:22,618 INFO L85 PathProgramCache]: Analyzing trace with hash -801247076, now seen corresponding path program 1 times [2024-10-24 18:29:22,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:29:22,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2009906874] [2024-10-24 18:29:22,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:29:22,618 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 [2024-10-24 18:29:22,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:29:22,619 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-24 18:29:22,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2024-10-24 18:29:22,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:29:22,895 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 18:29:22,897 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:29:22,902 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-24 18:29:22,902 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-24 18:29:22,903 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-24 18:29:22,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2024-10-24 18:29:23,010 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 18:29:23,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2024-10-24 18:29:23,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:29:23,021 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 18:29:23,021 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:29:23,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2009906874] [2024-10-24 18:29:23,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2009906874] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:29:23,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:29:23,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 18:29:23,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321150758] [2024-10-24 18:29:23,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:29:23,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 18:29:23,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:29:23,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 18:29:23,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 18:29:23,022 INFO L87 Difference]: Start difference. First operand 4758 states and 7617 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:29:24,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 18:29:24,691 INFO L93 Difference]: Finished difference Result 5075 states and 7696 transitions. [2024-10-24 18:29:24,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 18:29:24,692 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-10-24 18:29:24,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 18:29:24,697 INFO L225 Difference]: With dead ends: 5075 [2024-10-24 18:29:24,698 INFO L226 Difference]: Without dead ends: 5075 [2024-10-24 18:29:24,698 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 18:29:24,698 INFO L432 NwaCegarLoop]: 1818 mSDtfsCounter, 770 mSDsluCounter, 3393 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 5211 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-24 18:29:24,699 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 5211 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-24 18:29:24,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5075 states. [2024-10-24 18:29:24,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5075 to 4390. [2024-10-24 18:29:24,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4390 states, 3530 states have (on average 1.954674220963173) internal successors, (6900), 4347 states have internal predecessors, (6900), 43 states have call successors, (43), 3 states have call predecessors, (43), 3 states have return successors, (43), 40 states have call predecessors, (43), 43 states have call successors, (43) [2024-10-24 18:29:24,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4390 states to 4390 states and 6986 transitions. [2024-10-24 18:29:24,736 INFO L78 Accepts]: Start accepts. Automaton has 4390 states and 6986 transitions. Word has length 56 [2024-10-24 18:29:24,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 18:29:24,737 INFO L471 AbstractCegarLoop]: Abstraction has 4390 states and 6986 transitions. [2024-10-24 18:29:24,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:29:24,737 INFO L276 IsEmpty]: Start isEmpty. Operand 4390 states and 6986 transitions. [2024-10-24 18:29:24,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-24 18:29:24,737 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 18:29:24,737 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:29:24,745 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2024-10-24 18:29:24,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:29:24,938 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-10-24 18:29:24,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:29:24,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1136067489, now seen corresponding path program 1 times [2024-10-24 18:29:24,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:29:24,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1791780487] [2024-10-24 18:29:24,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:29:24,939 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 [2024-10-24 18:29:24,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:29:24,940 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-24 18:29:24,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2024-10-24 18:29:25,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:29:25,228 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 18:29:25,230 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:29:25,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-24 18:29:25,239 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 [2024-10-24 18:29:25,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 18:29:25,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-10-24 18:29:25,573 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-24 18:29:25,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-24 18:29:25,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:29:25,584 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 18:29:25,584 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:29:25,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1791780487] [2024-10-24 18:29:25,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1791780487] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:29:25,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:29:25,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 18:29:25,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110214392] [2024-10-24 18:29:25,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:29:25,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 18:29:25,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:29:25,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 18:29:25,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-24 18:29:25,585 INFO L87 Difference]: Start difference. First operand 4390 states and 6986 transitions. Second operand has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:29:27,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 18:29:27,849 INFO L93 Difference]: Finished difference Result 4306 states and 6743 transitions. [2024-10-24 18:29:27,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 18:29:27,850 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-10-24 18:29:27,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 18:29:27,854 INFO L225 Difference]: With dead ends: 4306 [2024-10-24 18:29:27,854 INFO L226 Difference]: Without dead ends: 4306 [2024-10-24 18:29:27,854 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-24 18:29:27,854 INFO L432 NwaCegarLoop]: 660 mSDtfsCounter, 1448 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 1400 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1458 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 1491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-24 18:29:27,855 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1458 Valid, 834 Invalid, 1491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1400 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-24 18:29:27,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4306 states. [2024-10-24 18:29:27,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4306 to 4196. [2024-10-24 18:29:27,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4196 states, 3420 states have (on average 1.8804093567251463) internal successors, (6431), 4153 states have internal predecessors, (6431), 43 states have call successors, (43), 3 states have call predecessors, (43), 3 states have return successors, (43), 40 states have call predecessors, (43), 43 states have call successors, (43) [2024-10-24 18:29:27,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4196 states to 4196 states and 6517 transitions. [2024-10-24 18:29:27,887 INFO L78 Accepts]: Start accepts. Automaton has 4196 states and 6517 transitions. Word has length 56 [2024-10-24 18:29:27,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 18:29:27,887 INFO L471 AbstractCegarLoop]: Abstraction has 4196 states and 6517 transitions. [2024-10-24 18:29:27,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:29:27,887 INFO L276 IsEmpty]: Start isEmpty. Operand 4196 states and 6517 transitions. [2024-10-24 18:29:27,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-24 18:29:27,887 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 18:29:27,888 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:29:27,896 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2024-10-24 18:29:28,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:29:28,088 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-10-24 18:29:28,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:29:28,089 INFO L85 PathProgramCache]: Analyzing trace with hash -34246570, now seen corresponding path program 1 times [2024-10-24 18:29:28,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:29:28,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [214118025] [2024-10-24 18:29:28,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:29:28,089 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 [2024-10-24 18:29:28,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:29:28,090 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-24 18:29:28,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2024-10-24 18:29:28,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:29:28,328 INFO L255 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 18:29:28,334 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:29:28,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-24 18:29:28,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-10-24 18:29:28,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-10-24 18:29:28,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:29:28,375 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 18:29:28,375 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:29:28,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [214118025] [2024-10-24 18:29:28,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [214118025] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:29:28,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:29:28,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 18:29:28,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159705664] [2024-10-24 18:29:28,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:29:28,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 18:29:28,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:29:28,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 18:29:28,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 18:29:28,376 INFO L87 Difference]: Start difference. First operand 4196 states and 6517 transitions. Second operand has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:29:31,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 18:29:31,125 INFO L93 Difference]: Finished difference Result 4195 states and 6514 transitions. [2024-10-24 18:29:31,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 18:29:31,126 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-10-24 18:29:31,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 18:29:31,130 INFO L225 Difference]: With dead ends: 4195 [2024-10-24 18:29:31,130 INFO L226 Difference]: Without dead ends: 4195 [2024-10-24 18:29:31,130 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-24 18:29:31,131 INFO L432 NwaCegarLoop]: 1564 mSDtfsCounter, 2 mSDsluCounter, 2711 mSDsCounter, 0 mSdLazyCounter, 2729 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 4275 SdHoareTripleChecker+Invalid, 2730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-10-24 18:29:31,131 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 4275 Invalid, 2730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2729 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-10-24 18:29:31,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4195 states. [2024-10-24 18:29:31,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4195 to 4195. [2024-10-24 18:29:31,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4195 states, 3420 states have (on average 1.87953216374269) internal successors, (6428), 4152 states have internal predecessors, (6428), 43 states have call successors, (43), 3 states have call predecessors, (43), 3 states have return successors, (43), 40 states have call predecessors, (43), 43 states have call successors, (43) [2024-10-24 18:29:31,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4195 states to 4195 states and 6514 transitions. [2024-10-24 18:29:31,164 INFO L78 Accepts]: Start accepts. Automaton has 4195 states and 6514 transitions. Word has length 60 [2024-10-24 18:29:31,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 18:29:31,164 INFO L471 AbstractCegarLoop]: Abstraction has 4195 states and 6514 transitions. [2024-10-24 18:29:31,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:29:31,164 INFO L276 IsEmpty]: Start isEmpty. Operand 4195 states and 6514 transitions. [2024-10-24 18:29:31,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-24 18:29:31,164 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 18:29:31,165 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:29:31,173 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2024-10-24 18:29:31,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:29:31,365 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-10-24 18:29:31,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:29:31,366 INFO L85 PathProgramCache]: Analyzing trace with hash -34246569, now seen corresponding path program 1 times [2024-10-24 18:29:31,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:29:31,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [88577390] [2024-10-24 18:29:31,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:29:31,366 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 [2024-10-24 18:29:31,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:29:31,368 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-24 18:29:31,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2024-10-24 18:29:31,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:29:31,645 INFO L255 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-24 18:29:31,647 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:29:31,655 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 [2024-10-24 18:29:31,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-10-24 18:29:31,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-10-24 18:29:31,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-10-24 18:29:31,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:29:31,717 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 18:29:31,718 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:29:31,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [88577390] [2024-10-24 18:29:31,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [88577390] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:29:31,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:29:31,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 18:29:31,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567658726] [2024-10-24 18:29:31,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:29:31,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 18:29:31,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:29:31,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 18:29:31,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 18:29:31,719 INFO L87 Difference]: Start difference. First operand 4195 states and 6514 transitions. Second operand has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:29:35,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 18:29:35,347 INFO L93 Difference]: Finished difference Result 4194 states and 6511 transitions. [2024-10-24 18:29:35,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 18:29:35,347 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-10-24 18:29:35,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 18:29:35,351 INFO L225 Difference]: With dead ends: 4194 [2024-10-24 18:29:35,351 INFO L226 Difference]: Without dead ends: 4194 [2024-10-24 18:29:35,351 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-24 18:29:35,352 INFO L432 NwaCegarLoop]: 1564 mSDtfsCounter, 1 mSDsluCounter, 2675 mSDsCounter, 0 mSdLazyCounter, 2762 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4239 SdHoareTripleChecker+Invalid, 2763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-10-24 18:29:35,352 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4239 Invalid, 2763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2762 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-10-24 18:29:35,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4194 states. [2024-10-24 18:29:35,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4194 to 4194. [2024-10-24 18:29:35,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4194 states, 3417 states have (on average 1.8803043605501901) internal successors, (6425), 4151 states have internal predecessors, (6425), 43 states have call successors, (43), 3 states have call predecessors, (43), 3 states have return successors, (43), 40 states have call predecessors, (43), 43 states have call successors, (43) [2024-10-24 18:29:35,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4194 states to 4194 states and 6511 transitions. [2024-10-24 18:29:35,381 INFO L78 Accepts]: Start accepts. Automaton has 4194 states and 6511 transitions. Word has length 60 [2024-10-24 18:29:35,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 18:29:35,382 INFO L471 AbstractCegarLoop]: Abstraction has 4194 states and 6511 transitions. [2024-10-24 18:29:35,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:29:35,382 INFO L276 IsEmpty]: Start isEmpty. Operand 4194 states and 6511 transitions. [2024-10-24 18:29:35,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-24 18:29:35,382 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 18:29:35,383 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:29:35,392 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Ended with exit code 0 [2024-10-24 18:29:35,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:29:35,583 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-10-24 18:29:35,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:29:35,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1558478362, now seen corresponding path program 1 times [2024-10-24 18:29:35,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:29:35,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [534439740] [2024-10-24 18:29:35,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:29:35,585 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 [2024-10-24 18:29:35,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:29:35,586 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-24 18:29:35,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2024-10-24 18:29:35,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:29:35,846 INFO L255 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 18:29:35,848 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:29:35,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:29:35,858 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 18:29:35,858 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:29:35,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [534439740] [2024-10-24 18:29:35,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [534439740] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:29:35,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:29:35,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 18:29:35,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646771939] [2024-10-24 18:29:35,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:29:35,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 18:29:35,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:29:35,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 18:29:35,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 18:29:35,860 INFO L87 Difference]: Start difference. First operand 4194 states and 6511 transitions. Second operand has 4 states, 3 states have (on average 21.333333333333332) internal successors, (64), 4 states have internal predecessors, (64), 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) [2024-10-24 18:29:36,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 18:29:36,844 INFO L93 Difference]: Finished difference Result 4196 states and 6518 transitions. [2024-10-24 18:29:36,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 18:29:36,844 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 21.333333333333332) internal successors, (64), 4 states have internal predecessors, (64), 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 66 [2024-10-24 18:29:36,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 18:29:36,854 INFO L225 Difference]: With dead ends: 4196 [2024-10-24 18:29:36,855 INFO L226 Difference]: Without dead ends: 4196 [2024-10-24 18:29:36,855 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 18:29:36,855 INFO L432 NwaCegarLoop]: 1563 mSDtfsCounter, 0 mSDsluCounter, 3120 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4683 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-24 18:29:36,855 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4683 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-24 18:29:36,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4196 states. [2024-10-24 18:29:36,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4196 to 4196. [2024-10-24 18:29:36,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4196 states, 3418 states have (on average 1.8803393797542423) internal successors, (6427), 4153 states have internal predecessors, (6427), 43 states have call successors, (43), 3 states have call predecessors, (43), 4 states have return successors, (48), 40 states have call predecessors, (48), 43 states have call successors, (48) [2024-10-24 18:29:36,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4196 states to 4196 states and 6518 transitions. [2024-10-24 18:29:36,928 INFO L78 Accepts]: Start accepts. Automaton has 4196 states and 6518 transitions. Word has length 66 [2024-10-24 18:29:36,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 18:29:36,928 INFO L471 AbstractCegarLoop]: Abstraction has 4196 states and 6518 transitions. [2024-10-24 18:29:36,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 21.333333333333332) internal successors, (64), 4 states have internal predecessors, (64), 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) [2024-10-24 18:29:36,928 INFO L276 IsEmpty]: Start isEmpty. Operand 4196 states and 6518 transitions. [2024-10-24 18:29:36,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-24 18:29:36,929 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 18:29:36,929 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:29:36,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Ended with exit code 0 [2024-10-24 18:29:37,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:29:37,130 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-10-24 18:29:37,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:29:37,131 INFO L85 PathProgramCache]: Analyzing trace with hash 115889589, now seen corresponding path program 1 times [2024-10-24 18:29:37,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:29:37,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1180306236] [2024-10-24 18:29:37,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:29:37,132 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 [2024-10-24 18:29:37,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:29:37,134 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-24 18:29:37,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2024-10-24 18:29:37,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:29:37,407 INFO L255 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 18:29:37,409 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:29:37,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:29:37,427 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 18:29:37,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:29:37,478 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:29:37,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1180306236] [2024-10-24 18:29:37,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1180306236] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 18:29:37,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 18:29:37,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-10-24 18:29:37,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109424234] [2024-10-24 18:29:37,481 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 18:29:37,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 18:29:37,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:29:37,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 18:29:37,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-24 18:29:37,482 INFO L87 Difference]: Start difference. First operand 4196 states and 6518 transitions. Second operand has 8 states, 6 states have (on average 11.333333333333334) internal successors, (68), 8 states have internal predecessors, (68), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 18:29:39,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 18:29:39,069 INFO L93 Difference]: Finished difference Result 4205 states and 6536 transitions. [2024-10-24 18:29:39,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 18:29:39,069 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 11.333333333333334) internal successors, (68), 8 states have internal predecessors, (68), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 67 [2024-10-24 18:29:39,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 18:29:39,079 INFO L225 Difference]: With dead ends: 4205 [2024-10-24 18:29:39,079 INFO L226 Difference]: Without dead ends: 4205 [2024-10-24 18:29:39,079 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2024-10-24 18:29:39,079 INFO L432 NwaCegarLoop]: 1561 mSDtfsCounter, 4 mSDsluCounter, 6230 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 7791 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-24 18:29:39,080 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 7791 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 989 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-24 18:29:39,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4205 states. [2024-10-24 18:29:39,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4205 to 4204. [2024-10-24 18:29:39,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4204 states, 3425 states have (on average 1.8802919708029198) internal successors, (6440), 4160 states have internal predecessors, (6440), 43 states have call successors, (43), 4 states have call predecessors, (43), 5 states have return successors, (48), 40 states have call predecessors, (48), 43 states have call successors, (48) [2024-10-24 18:29:39,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4204 states to 4204 states and 6531 transitions. [2024-10-24 18:29:39,148 INFO L78 Accepts]: Start accepts. Automaton has 4204 states and 6531 transitions. Word has length 67 [2024-10-24 18:29:39,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 18:29:39,149 INFO L471 AbstractCegarLoop]: Abstraction has 4204 states and 6531 transitions. [2024-10-24 18:29:39,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 11.333333333333334) internal successors, (68), 8 states have internal predecessors, (68), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 18:29:39,149 INFO L276 IsEmpty]: Start isEmpty. Operand 4204 states and 6531 transitions. [2024-10-24 18:29:39,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-24 18:29:39,150 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 18:29:39,150 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:29:39,158 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Ended with exit code 0 [2024-10-24 18:29:39,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:29:39,352 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-10-24 18:29:39,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:29:39,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1427436326, now seen corresponding path program 2 times [2024-10-24 18:29:39,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:29:39,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [333518301] [2024-10-24 18:29:39,354 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 18:29:39,354 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 [2024-10-24 18:29:39,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:29:39,356 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-24 18:29:39,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process