./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_SFH_test10-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 61a67961 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_SFH_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 9a343b75818c5d561b79c31bb62e9abdd9bdb0bf3f01f7efa313d9ef0f4204f4 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 19:17:57,425 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 19:17:57,491 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-14 19:17:57,495 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 19:17:57,496 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 19:17:57,518 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 19:17:57,519 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 19:17:57,519 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 19:17:57,519 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 19:17:57,520 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 19:17:57,520 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 19:17:57,520 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 19:17:57,521 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 19:17:57,521 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 19:17:57,521 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 19:17:57,521 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 19:17:57,522 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 19:17:57,522 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 19:17:57,522 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 19:17:57,522 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 19:17:57,523 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 19:17:57,525 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 19:17:57,525 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 19:17:57,526 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 19:17:57,526 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 19:17:57,526 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 19:17:57,526 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 19:17:57,526 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 19:17:57,526 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 19:17:57,527 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 19:17:57,527 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 19:17:57,527 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 19:17:57,527 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 19:17:57,528 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:17:57,528 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 19:17:57,528 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 19:17:57,528 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 19:17:57,528 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 19:17:57,528 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 19:17:57,528 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 19:17:57,528 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 19:17:57,529 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 19:17:57,529 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a343b75818c5d561b79c31bb62e9abdd9bdb0bf3f01f7efa313d9ef0f4204f4 [2024-10-14 19:17:57,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 19:17:57,739 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 19:17:57,742 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 19:17:57,742 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 19:17:57,743 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 19:17:57,743 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-2.i [2024-10-14 19:17:59,048 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 19:17:59,315 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 19:17:59,315 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-2.i [2024-10-14 19:17:59,332 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e39c4395/53bfc24f36144a738b433249e81dad83/FLAG379d141f8 [2024-10-14 19:17:59,601 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e39c4395/53bfc24f36144a738b433249e81dad83 [2024-10-14 19:17:59,603 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 19:17:59,604 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 19:17:59,604 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 19:17:59,605 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 19:17:59,609 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 19:17:59,609 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:17:59" (1/1) ... [2024-10-14 19:17:59,610 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f6b4858 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:17:59, skipping insertion in model container [2024-10-14 19:17:59,610 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:17:59" (1/1) ... [2024-10-14 19:17:59,652 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:18:00,099 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:18:00,110 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) [2024-10-14 19:18:00,111 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@688c120f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:18:00, skipping insertion in model container [2024-10-14 19:18:00,111 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 19:18:00,111 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-14 19:18:00,112 INFO L158 Benchmark]: Toolchain (without parser) took 508.04ms. Allocated memory is still 176.2MB. Free memory was 120.0MB in the beginning and 89.1MB in the end (delta: 30.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-10-14 19:18:00,113 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 176.2MB. Free memory is still 139.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 19:18:00,113 INFO L158 Benchmark]: CACSL2BoogieTranslator took 506.61ms. Allocated memory is still 176.2MB. Free memory was 120.0MB in the beginning and 89.1MB in the end (delta: 30.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-10-14 19:18:00,115 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 176.2MB. Free memory is still 139.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 506.61ms. Allocated memory is still 176.2MB. Free memory was 120.0MB in the beginning and 89.1MB in the end (delta: 30.9MB). Peak memory consumption was 29.4MB. 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_SFH_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 9a343b75818c5d561b79c31bb62e9abdd9bdb0bf3f01f7efa313d9ef0f4204f4 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 19:18:01,566 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 19:18:01,623 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-14 19:18:01,627 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 19:18:01,628 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 19:18:01,653 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 19:18:01,653 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 19:18:01,654 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 19:18:01,654 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 19:18:01,654 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 19:18:01,654 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 19:18:01,655 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 19:18:01,655 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 19:18:01,655 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 19:18:01,656 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 19:18:01,657 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 19:18:01,657 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 19:18:01,657 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 19:18:01,658 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 19:18:01,659 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 19:18:01,659 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 19:18:01,664 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 19:18:01,664 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 19:18:01,665 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 19:18:01,665 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 19:18:01,665 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-14 19:18:01,665 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 19:18:01,665 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-14 19:18:01,665 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 19:18:01,665 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 19:18:01,666 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 19:18:01,666 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 19:18:01,666 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 19:18:01,666 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 19:18:01,666 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 19:18:01,666 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:18:01,667 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 19:18:01,667 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 19:18:01,667 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-14 19:18:01,667 INFO L153 SettingsManager]: * Command for external solver=cvc5 --incremental --print-success --lang smt [2024-10-14 19:18:01,667 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 19:18:01,668 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 19:18:01,668 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 19:18:01,668 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 19:18:01,668 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-14 19:18:01,668 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a343b75818c5d561b79c31bb62e9abdd9bdb0bf3f01f7efa313d9ef0f4204f4 [2024-10-14 19:18:01,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 19:18:01,926 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 19:18:01,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 19:18:01,930 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 19:18:01,930 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 19:18:01,933 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-2.i [2024-10-14 19:18:03,144 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 19:18:03,394 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 19:18:03,395 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-2.i [2024-10-14 19:18:03,410 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1da82d93a/012e563d2055404ea6c0070930705e1b/FLAG2f0706259 [2024-10-14 19:18:03,707 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1da82d93a/012e563d2055404ea6c0070930705e1b [2024-10-14 19:18:03,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 19:18:03,710 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 19:18:03,710 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 19:18:03,710 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 19:18:03,717 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 19:18:03,717 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:18:03" (1/1) ... [2024-10-14 19:18:03,718 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@720fb5f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:18:03, skipping insertion in model container [2024-10-14 19:18:03,720 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:18:03" (1/1) ... [2024-10-14 19:18:03,763 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:18:04,260 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:18:04,277 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-14 19:18:04,287 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:18:04,388 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:18:04,391 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 19:18:04,466 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:18:04,509 INFO L204 MainTranslator]: Completed translation [2024-10-14 19:18:04,509 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:18:04 WrapperNode [2024-10-14 19:18:04,509 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 19:18:04,510 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 19:18:04,510 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 19:18:04,510 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 19:18:04,515 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:18:04" (1/1) ... [2024-10-14 19:18:04,556 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:18:04" (1/1) ... [2024-10-14 19:18:04,621 INFO L138 Inliner]: procedures = 180, calls = 558, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2439 [2024-10-14 19:18:04,621 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 19:18:04,622 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 19:18:04,622 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 19:18:04,622 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 19:18:04,630 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:18:04" (1/1) ... [2024-10-14 19:18:04,630 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:18:04" (1/1) ... [2024-10-14 19:18:04,640 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:18:04" (1/1) ... [2024-10-14 19:18:04,758 INFO L175 MemorySlicer]: Split 528 memory accesses to 3 slices as follows [420, 2, 106]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [0, 2, 0]. The 94 writes are split as follows [90, 0, 4]. [2024-10-14 19:18:04,758 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:18:04" (1/1) ... [2024-10-14 19:18:04,759 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:18:04" (1/1) ... [2024-10-14 19:18:04,818 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:18:04" (1/1) ... [2024-10-14 19:18:04,830 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:18:04" (1/1) ... [2024-10-14 19:18:04,836 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:18:04" (1/1) ... [2024-10-14 19:18:04,851 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:18:04" (1/1) ... [2024-10-14 19:18:04,869 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 19:18:04,870 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 19:18:04,871 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 19:18:04,871 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 19:18:04,872 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:18:04" (1/1) ... [2024-10-14 19:18:04,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:18:04,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:18:04,903 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) [2024-10-14 19:18:04,905 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 [2024-10-14 19:18:04,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-10-14 19:18:04,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-10-14 19:18:04,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-10-14 19:18:04,935 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2024-10-14 19:18:04,935 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2024-10-14 19:18:04,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-14 19:18:04,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-14 19:18:04,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-10-14 19:18:04,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-14 19:18:04,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-14 19:18:04,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-10-14 19:18:04,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-10-14 19:18:04,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-10-14 19:18:04,935 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-10-14 19:18:04,935 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-10-14 19:18:04,936 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-10-14 19:18:04,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-14 19:18:04,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 19:18:04,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-14 19:18:04,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-14 19:18:04,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-14 19:18:04,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-14 19:18:04,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-14 19:18:04,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-14 19:18:04,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-14 19:18:04,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-14 19:18:04,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-14 19:18:04,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-14 19:18:04,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-10-14 19:18:04,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-14 19:18:04,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-14 19:18:04,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-10-14 19:18:04,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 19:18:04,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 19:18:05,163 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 19:18:05,165 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 19:18:05,210 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-10-14 19:18:05,236 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-10-14 19:18:05,273 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-10-14 19:18:10,262 INFO L? ?]: Removed 2232 outVars from TransFormulas that were not future-live. [2024-10-14 19:18:10,263 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 19:18:10,473 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 19:18:10,473 INFO L314 CfgBuilder]: Removed 160 assume(true) statements. [2024-10-14 19:18:10,477 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:18:10 BoogieIcfgContainer [2024-10-14 19:18:10,477 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 19:18:10,478 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 19:18:10,479 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 19:18:10,481 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 19:18:10,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:18:03" (1/3) ... [2024-10-14 19:18:10,481 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46882aa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:18:10, skipping insertion in model container [2024-10-14 19:18:10,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:18:04" (2/3) ... [2024-10-14 19:18:10,482 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46882aa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:18:10, skipping insertion in model container [2024-10-14 19:18:10,482 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:18:10" (3/3) ... [2024-10-14 19:18:10,483 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test10-2.i [2024-10-14 19:18:10,495 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 19:18:10,495 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1091 error locations. [2024-10-14 19:18:10,554 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 19:18:10,559 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;@7dd4fde0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 19:18:10,560 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1091 error locations. [2024-10-14 19:18:10,567 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) [2024-10-14 19:18:10,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2024-10-14 19:18:10,572 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 19:18:10,572 INFO L215 NwaCegarLoop]: trace histogram [1, 1] [2024-10-14 19:18:10,572 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)] === [2024-10-14 19:18:10,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:18:10,577 INFO L85 PathProgramCache]: Analyzing trace with hash 119657, now seen corresponding path program 1 times [2024-10-14 19:18:10,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:18:10,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [325723125] [2024-10-14 19:18:10,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:18:10,586 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 [2024-10-14 19:18:10,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:18:10,589 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) [2024-10-14 19:18:10,590 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 [2024-10-14 19:18:10,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:18:10,751 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 19:18:10,756 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:18:10,793 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 [2024-10-14 19:18:10,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:18:10,817 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:18:10,817 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:18:10,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [325723125] [2024-10-14 19:18:10,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [325723125] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:18:10,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:18:10,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 19:18:10,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754193624] [2024-10-14 19:18:10,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:18:10,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:18:10,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:18:10,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:18:10,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:18:10,848 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) [2024-10-14 19:18:13,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 19:18:13,378 INFO L93 Difference]: Finished difference Result 2659 states and 2843 transitions. [2024-10-14 19:18:13,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:18:13,382 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 [2024-10-14 19:18:13,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 19:18:13,403 INFO L225 Difference]: With dead ends: 2659 [2024-10-14 19:18:13,403 INFO L226 Difference]: Without dead ends: 2658 [2024-10-14 19:18:13,404 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 [2024-10-14 19:18:13,407 INFO L432 NwaCegarLoop]: 1167 mSDtfsCounter, 1946 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s 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, 2.4s IncrementalHoareTripleChecker+Time [2024-10-14 19:18:13,408 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1956 Valid, 1561 Invalid, 1517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1492 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-14 19:18:13,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2658 states. [2024-10-14 19:18:13,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2658 to 2169. [2024-10-14 19:18:13,523 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) [2024-10-14 19:18:13,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2169 states to 2169 states and 2502 transitions. [2024-10-14 19:18:13,530 INFO L78 Accepts]: Start accepts. Automaton has 2169 states and 2502 transitions. Word has length 2 [2024-10-14 19:18:13,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 19:18:13,531 INFO L471 AbstractCegarLoop]: Abstraction has 2169 states and 2502 transitions. [2024-10-14 19:18:13,531 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) [2024-10-14 19:18:13,531 INFO L276 IsEmpty]: Start isEmpty. Operand 2169 states and 2502 transitions. [2024-10-14 19:18:13,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2024-10-14 19:18:13,532 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 19:18:13,532 INFO L215 NwaCegarLoop]: trace histogram [1, 1] [2024-10-14 19:18:13,535 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 [2024-10-14 19:18:13,734 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 [2024-10-14 19:18:13,734 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)] === [2024-10-14 19:18:13,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:18:13,735 INFO L85 PathProgramCache]: Analyzing trace with hash 119658, now seen corresponding path program 1 times [2024-10-14 19:18:13,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:18:13,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1552671067] [2024-10-14 19:18:13,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:18:13,736 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 [2024-10-14 19:18:13,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:18:13,737 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) [2024-10-14 19:18:13,738 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 [2024-10-14 19:18:13,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:18:13,868 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 19:18:13,870 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:18:13,876 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 [2024-10-14 19:18:13,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:18:13,885 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:18:13,885 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:18:13,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1552671067] [2024-10-14 19:18:13,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1552671067] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:18:13,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:18:13,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 19:18:13,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726105128] [2024-10-14 19:18:13,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:18:13,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:18:13,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:18:13,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:18:13,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:18:13,888 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) [2024-10-14 19:18:17,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 19:18:17,297 INFO L93 Difference]: Finished difference Result 2894 states and 3307 transitions. [2024-10-14 19:18:17,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:18:17,298 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 [2024-10-14 19:18:17,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 19:18:17,304 INFO L225 Difference]: With dead ends: 2894 [2024-10-14 19:18:17,304 INFO L226 Difference]: Without dead ends: 2894 [2024-10-14 19:18:17,305 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 [2024-10-14 19:18:17,305 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, 3.3s IncrementalHoareTripleChecker+Time [2024-10-14 19:18:17,306 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 2777 Invalid, 1576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1565 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-10-14 19:18:17,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2024-10-14 19:18:17,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 2566. [2024-10-14 19:18:17,334 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) [2024-10-14 19:18:17,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2566 states to 2566 states and 3307 transitions. [2024-10-14 19:18:17,339 INFO L78 Accepts]: Start accepts. Automaton has 2566 states and 3307 transitions. Word has length 2 [2024-10-14 19:18:17,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 19:18:17,339 INFO L471 AbstractCegarLoop]: Abstraction has 2566 states and 3307 transitions. [2024-10-14 19:18:17,339 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) [2024-10-14 19:18:17,339 INFO L276 IsEmpty]: Start isEmpty. Operand 2566 states and 3307 transitions. [2024-10-14 19:18:17,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-14 19:18:17,340 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 19:18:17,340 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-14 19:18:17,343 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 [2024-10-14 19:18:17,542 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 [2024-10-14 19:18:17,543 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)] === [2024-10-14 19:18:17,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:18:17,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1162343629, now seen corresponding path program 1 times [2024-10-14 19:18:17,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:18:17,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1156001733] [2024-10-14 19:18:17,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:18:17,548 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 [2024-10-14 19:18:17,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:18:17,551 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) [2024-10-14 19:18:17,559 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 [2024-10-14 19:18:17,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:18:17,703 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 19:18:17,705 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:18:17,715 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 [2024-10-14 19:18:17,719 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 [2024-10-14 19:18:17,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 19:18:17,767 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 [2024-10-14 19:18:17,781 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-14 19:18:17,782 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 [2024-10-14 19:18:17,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:18:17,808 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:18:17,808 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:18:17,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1156001733] [2024-10-14 19:18:17,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1156001733] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:18:17,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:18:17,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:18:17,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883089855] [2024-10-14 19:18:17,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:18:17,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:18:17,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:18:17,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:18:17,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:18:17,809 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) [2024-10-14 19:18:22,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 19:18:22,872 INFO L93 Difference]: Finished difference Result 4608 states and 5499 transitions. [2024-10-14 19:18:22,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:18:22,872 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 [2024-10-14 19:18:22,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 19:18:22,883 INFO L225 Difference]: With dead ends: 4608 [2024-10-14 19:18:22,883 INFO L226 Difference]: Without dead ends: 4608 [2024-10-14 19:18:22,883 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 [2024-10-14 19:18:22,884 INFO L432 NwaCegarLoop]: 760 mSDtfsCounter, 3927 mSDsluCounter, 1173 mSDsCounter, 0 mSdLazyCounter, 2804 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s 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, 5.0s IncrementalHoareTripleChecker+Time [2024-10-14 19:18:22,887 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3936 Valid, 1933 Invalid, 2844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2804 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2024-10-14 19:18:22,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4608 states. [2024-10-14 19:18:22,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4608 to 3140. [2024-10-14 19:18:22,927 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) [2024-10-14 19:18:22,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3140 states to 3140 states and 4679 transitions. [2024-10-14 19:18:22,952 INFO L78 Accepts]: Start accepts. Automaton has 3140 states and 4679 transitions. Word has length 6 [2024-10-14 19:18:22,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 19:18:22,953 INFO L471 AbstractCegarLoop]: Abstraction has 3140 states and 4679 transitions. [2024-10-14 19:18:22,953 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) [2024-10-14 19:18:22,953 INFO L276 IsEmpty]: Start isEmpty. Operand 3140 states and 4679 transitions. [2024-10-14 19:18:22,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-14 19:18:22,953 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 19:18:22,953 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:18:22,957 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 (4)] Forceful destruction successful, exit code 0 [2024-10-14 19:18:23,154 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 [2024-10-14 19:18:23,154 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)] === [2024-10-14 19:18:23,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:18:23,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1672914111, now seen corresponding path program 1 times [2024-10-14 19:18:23,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:18:23,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1960839719] [2024-10-14 19:18:23,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:18:23,156 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 [2024-10-14 19:18:23,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:18:23,158 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) [2024-10-14 19:18:23,159 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 [2024-10-14 19:18:23,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:18:23,302 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 19:18:23,305 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:18:23,310 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 [2024-10-14 19:18:23,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:18:23,319 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:18:23,319 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:18:23,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1960839719] [2024-10-14 19:18:23,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1960839719] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:18:23,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:18:23,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:18:23,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648216144] [2024-10-14 19:18:23,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:18:23,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:18:23,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:18:23,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:18:23,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:18:23,321 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) [2024-10-14 19:18:25,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 19:18:25,579 INFO L93 Difference]: Finished difference Result 3776 states and 5273 transitions. [2024-10-14 19:18:25,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:18:25,579 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 [2024-10-14 19:18:25,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 19:18:25,588 INFO L225 Difference]: With dead ends: 3776 [2024-10-14 19:18:25,588 INFO L226 Difference]: Without dead ends: 3776 [2024-10-14 19:18:25,588 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 [2024-10-14 19:18:25,589 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, 2.2s IncrementalHoareTripleChecker+Time [2024-10-14 19:18:25,589 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1736 Valid, 2417 Invalid, 1712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1613 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-14 19:18:25,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2024-10-14 19:18:25,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 3048. [2024-10-14 19:18:25,626 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) [2024-10-14 19:18:25,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3048 states to 3048 states and 4464 transitions. [2024-10-14 19:18:25,632 INFO L78 Accepts]: Start accepts. Automaton has 3048 states and 4464 transitions. Word has length 7 [2024-10-14 19:18:25,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 19:18:25,633 INFO L471 AbstractCegarLoop]: Abstraction has 3048 states and 4464 transitions. [2024-10-14 19:18:25,633 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) [2024-10-14 19:18:25,633 INFO L276 IsEmpty]: Start isEmpty. Operand 3048 states and 4464 transitions. [2024-10-14 19:18:25,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-14 19:18:25,633 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 19:18:25,634 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:18:25,637 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 (5)] Ended with exit code 0 [2024-10-14 19:18:25,834 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 [2024-10-14 19:18:25,834 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)] === [2024-10-14 19:18:25,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:18:25,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1672914110, now seen corresponding path program 1 times [2024-10-14 19:18:25,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:18:25,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1063938910] [2024-10-14 19:18:25,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:18:25,835 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 [2024-10-14 19:18:25,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:18:25,838 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) [2024-10-14 19:18:25,839 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 [2024-10-14 19:18:25,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:18:25,972 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 19:18:25,973 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:18:25,980 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 [2024-10-14 19:18:26,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:18:26,001 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:18:26,001 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:18:26,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1063938910] [2024-10-14 19:18:26,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1063938910] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:18:26,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:18:26,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:18:26,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690783244] [2024-10-14 19:18:26,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:18:26,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:18:26,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:18:26,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:18:26,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:18:26,002 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) [2024-10-14 19:18:29,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 19:18:29,151 INFO L93 Difference]: Finished difference Result 4617 states and 6688 transitions. [2024-10-14 19:18:29,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:18:29,152 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 [2024-10-14 19:18:29,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 19:18:29,161 INFO L225 Difference]: With dead ends: 4617 [2024-10-14 19:18:29,162 INFO L226 Difference]: Without dead ends: 4617 [2024-10-14 19:18:29,162 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 [2024-10-14 19:18:29,162 INFO L432 NwaCegarLoop]: 2133 mSDtfsCounter, 1285 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 1741 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s 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, 3.1s IncrementalHoareTripleChecker+Time [2024-10-14 19:18:29,162 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1289 Valid, 3048 Invalid, 1766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1741 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-10-14 19:18:29,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4617 states. [2024-10-14 19:18:29,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4617 to 3316. [2024-10-14 19:18:29,194 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) [2024-10-14 19:18:29,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3316 states to 3316 states and 5028 transitions. [2024-10-14 19:18:29,202 INFO L78 Accepts]: Start accepts. Automaton has 3316 states and 5028 transitions. Word has length 7 [2024-10-14 19:18:29,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 19:18:29,202 INFO L471 AbstractCegarLoop]: Abstraction has 3316 states and 5028 transitions. [2024-10-14 19:18:29,202 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) [2024-10-14 19:18:29,202 INFO L276 IsEmpty]: Start isEmpty. Operand 3316 states and 5028 transitions. [2024-10-14 19:18:29,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-14 19:18:29,202 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 19:18:29,203 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:18:29,205 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 (6)] Ended with exit code 0 [2024-10-14 19:18:29,403 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 [2024-10-14 19:18:29,403 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)] === [2024-10-14 19:18:29,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:18:29,404 INFO L85 PathProgramCache]: Analyzing trace with hash -286775368, now seen corresponding path program 1 times [2024-10-14 19:18:29,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:18:29,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1023850763] [2024-10-14 19:18:29,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:18:29,405 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 [2024-10-14 19:18:29,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:18:29,409 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) [2024-10-14 19:18:29,410 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 [2024-10-14 19:18:29,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:18:29,536 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-14 19:18:29,537 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:18:29,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:18:29,548 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:18:29,548 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:18:29,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1023850763] [2024-10-14 19:18:29,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1023850763] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:18:29,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:18:29,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:18:29,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780387123] [2024-10-14 19:18:29,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:18:29,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:18:29,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:18:29,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:18:29,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:18:29,549 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) [2024-10-14 19:18:30,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 19:18:30,296 INFO L93 Difference]: Finished difference Result 3262 states and 4948 transitions. [2024-10-14 19:18:30,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:18:30,297 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 [2024-10-14 19:18:30,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 19:18:30,304 INFO L225 Difference]: With dead ends: 3262 [2024-10-14 19:18:30,305 INFO L226 Difference]: Without dead ends: 3262 [2024-10-14 19:18:30,305 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 [2024-10-14 19:18:30,305 INFO L432 NwaCegarLoop]: 1805 mSDtfsCounter, 61 mSDsluCounter, 1763 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2024-10-14 19:18:30,306 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 3568 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-14 19:18:30,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3262 states. [2024-10-14 19:18:30,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3262 to 3262. [2024-10-14 19:18:30,333 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) [2024-10-14 19:18:30,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3262 states to 3262 states and 4948 transitions. [2024-10-14 19:18:30,338 INFO L78 Accepts]: Start accepts. Automaton has 3262 states and 4948 transitions. Word has length 10 [2024-10-14 19:18:30,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 19:18:30,338 INFO L471 AbstractCegarLoop]: Abstraction has 3262 states and 4948 transitions. [2024-10-14 19:18:30,338 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) [2024-10-14 19:18:30,338 INFO L276 IsEmpty]: Start isEmpty. Operand 3262 states and 4948 transitions. [2024-10-14 19:18:30,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-14 19:18:30,339 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 19:18:30,339 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:18:30,342 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 (7)] Ended with exit code 0 [2024-10-14 19:18:30,539 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 [2024-10-14 19:18:30,540 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)] === [2024-10-14 19:18:30,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:18:30,540 INFO L85 PathProgramCache]: Analyzing trace with hash -713168110, now seen corresponding path program 1 times [2024-10-14 19:18:30,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:18:30,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [177266489] [2024-10-14 19:18:30,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:18:30,540 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 [2024-10-14 19:18:30,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:18:30,541 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) [2024-10-14 19:18:30,542 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 [2024-10-14 19:18:30,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:18:30,678 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 19:18:30,680 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:18:30,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:18:30,698 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:18:30,698 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:18:30,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [177266489] [2024-10-14 19:18:30,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [177266489] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:18:30,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:18:30,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:18:30,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903435356] [2024-10-14 19:18:30,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:18:30,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:18:30,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:18:30,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:18:30,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:18:30,699 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) [2024-10-14 19:18:31,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 19:18:31,685 INFO L93 Difference]: Finished difference Result 3246 states and 4904 transitions. [2024-10-14 19:18:31,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:18:31,687 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 [2024-10-14 19:18:31,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 19:18:31,694 INFO L225 Difference]: With dead ends: 3246 [2024-10-14 19:18:31,694 INFO L226 Difference]: Without dead ends: 3246 [2024-10-14 19:18:31,694 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 [2024-10-14 19:18:31,695 INFO L432 NwaCegarLoop]: 1774 mSDtfsCounter, 45 mSDsluCounter, 3530 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 1.0s IncrementalHoareTripleChecker+Time [2024-10-14 19:18:31,695 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 5304 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-14 19:18:31,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3246 states. [2024-10-14 19:18:31,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3246 to 3246. [2024-10-14 19:18:31,725 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) [2024-10-14 19:18:31,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3246 states to 3246 states and 4904 transitions. [2024-10-14 19:18:31,729 INFO L78 Accepts]: Start accepts. Automaton has 3246 states and 4904 transitions. Word has length 12 [2024-10-14 19:18:31,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 19:18:31,730 INFO L471 AbstractCegarLoop]: Abstraction has 3246 states and 4904 transitions. [2024-10-14 19:18:31,730 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) [2024-10-14 19:18:31,730 INFO L276 IsEmpty]: Start isEmpty. Operand 3246 states and 4904 transitions. [2024-10-14 19:18:31,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-14 19:18:31,731 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 19:18:31,731 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:18:31,734 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 [2024-10-14 19:18:31,933 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 [2024-10-14 19:18:31,934 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)] === [2024-10-14 19:18:31,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:18:31,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1884128953, now seen corresponding path program 1 times [2024-10-14 19:18:31,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:18:31,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1153076578] [2024-10-14 19:18:31,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:18:31,935 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 [2024-10-14 19:18:31,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:18:31,938 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) [2024-10-14 19:18:31,939 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 [2024-10-14 19:18:32,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:18:32,101 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-14 19:18:32,103 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:18:32,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:18:32,111 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:18:32,111 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:18:32,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1153076578] [2024-10-14 19:18:32,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1153076578] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:18:32,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:18:32,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:18:32,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012280081] [2024-10-14 19:18:32,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:18:32,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:18:32,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:18:32,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:18:32,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:18:32,113 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) [2024-10-14 19:18:32,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 19:18:32,886 INFO L93 Difference]: Finished difference Result 3132 states and 4664 transitions. [2024-10-14 19:18:32,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:18:32,887 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 [2024-10-14 19:18:32,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 19:18:32,893 INFO L225 Difference]: With dead ends: 3132 [2024-10-14 19:18:32,893 INFO L226 Difference]: Without dead ends: 3132 [2024-10-14 19:18:32,893 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 [2024-10-14 19:18:32,893 INFO L432 NwaCegarLoop]: 1747 mSDtfsCounter, 61 mSDsluCounter, 1705 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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 [2024-10-14 19:18:32,894 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] [2024-10-14 19:18:32,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3132 states. [2024-10-14 19:18:32,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3132 to 3132. [2024-10-14 19:18:32,919 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) [2024-10-14 19:18:32,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3132 states to 3132 states and 4664 transitions. [2024-10-14 19:18:32,923 INFO L78 Accepts]: Start accepts. Automaton has 3132 states and 4664 transitions. Word has length 17 [2024-10-14 19:18:32,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 19:18:32,923 INFO L471 AbstractCegarLoop]: Abstraction has 3132 states and 4664 transitions. [2024-10-14 19:18:32,923 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) [2024-10-14 19:18:32,923 INFO L276 IsEmpty]: Start isEmpty. Operand 3132 states and 4664 transitions. [2024-10-14 19:18:32,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-14 19:18:32,924 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 19:18:32,924 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:18:32,930 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 [2024-10-14 19:18:33,124 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 [2024-10-14 19:18:33,125 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)] === [2024-10-14 19:18:33,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:18:33,125 INFO L85 PathProgramCache]: Analyzing trace with hash -2141973639, now seen corresponding path program 1 times [2024-10-14 19:18:33,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:18:33,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [457374304] [2024-10-14 19:18:33,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:18:33,126 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 [2024-10-14 19:18:33,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:18:33,127 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) [2024-10-14 19:18:33,128 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 [2024-10-14 19:18:33,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:18:33,289 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-14 19:18:33,290 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:18:33,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:18:33,296 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:18:33,296 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:18:33,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [457374304] [2024-10-14 19:18:33,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [457374304] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:18:33,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:18:33,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:18:33,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877836539] [2024-10-14 19:18:33,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:18:33,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:18:33,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:18:33,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:18:33,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:18:33,297 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) [2024-10-14 19:18:34,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 19:18:34,002 INFO L93 Difference]: Finished difference Result 3078 states and 4584 transitions. [2024-10-14 19:18:34,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:18:34,003 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 [2024-10-14 19:18:34,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 19:18:34,007 INFO L225 Difference]: With dead ends: 3078 [2024-10-14 19:18:34,007 INFO L226 Difference]: Without dead ends: 3078 [2024-10-14 19:18:34,007 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 [2024-10-14 19:18:34,007 INFO L432 NwaCegarLoop]: 1710 mSDtfsCounter, 61 mSDsluCounter, 1668 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2024-10-14 19:18:34,008 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 3378 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-14 19:18:34,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3078 states. [2024-10-14 19:18:34,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3078 to 3078. [2024-10-14 19:18:34,040 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) [2024-10-14 19:18:34,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3078 states to 3078 states and 4584 transitions. [2024-10-14 19:18:34,046 INFO L78 Accepts]: Start accepts. Automaton has 3078 states and 4584 transitions. Word has length 17 [2024-10-14 19:18:34,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 19:18:34,046 INFO L471 AbstractCegarLoop]: Abstraction has 3078 states and 4584 transitions. [2024-10-14 19:18:34,046 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) [2024-10-14 19:18:34,046 INFO L276 IsEmpty]: Start isEmpty. Operand 3078 states and 4584 transitions. [2024-10-14 19:18:34,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-14 19:18:34,047 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 19:18:34,047 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:18:34,052 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 (10)] Ended with exit code 0 [2024-10-14 19:18:34,248 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 [2024-10-14 19:18:34,248 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)] === [2024-10-14 19:18:34,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:18:34,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1828249453, now seen corresponding path program 1 times [2024-10-14 19:18:34,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:18:34,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [713028534] [2024-10-14 19:18:34,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:18:34,253 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 [2024-10-14 19:18:34,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:18:34,255 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) [2024-10-14 19:18:34,256 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 [2024-10-14 19:18:34,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:18:34,399 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 19:18:34,401 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:18:34,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:18:34,412 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:18:34,412 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:18:34,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [713028534] [2024-10-14 19:18:34,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [713028534] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:18:34,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:18:34,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:18:34,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780792507] [2024-10-14 19:18:34,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:18:34,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:18:34,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:18:34,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:18:34,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:18:34,413 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) [2024-10-14 19:18:35,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 19:18:35,306 INFO L93 Difference]: Finished difference Result 3058 states and 4452 transitions. [2024-10-14 19:18:35,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:18:35,307 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 [2024-10-14 19:18:35,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 19:18:35,312 INFO L225 Difference]: With dead ends: 3058 [2024-10-14 19:18:35,312 INFO L226 Difference]: Without dead ends: 3058 [2024-10-14 19:18:35,312 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 [2024-10-14 19:18:35,312 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, 0.9s IncrementalHoareTripleChecker+Time [2024-10-14 19:18:35,314 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 5019 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-14 19:18:35,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3058 states. [2024-10-14 19:18:35,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3058 to 3058. [2024-10-14 19:18:35,338 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) [2024-10-14 19:18:35,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3058 states to 3058 states and 4452 transitions. [2024-10-14 19:18:35,342 INFO L78 Accepts]: Start accepts. Automaton has 3058 states and 4452 transitions. Word has length 19 [2024-10-14 19:18:35,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 19:18:35,342 INFO L471 AbstractCegarLoop]: Abstraction has 3058 states and 4452 transitions. [2024-10-14 19:18:35,342 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) [2024-10-14 19:18:35,343 INFO L276 IsEmpty]: Start isEmpty. Operand 3058 states and 4452 transitions. [2024-10-14 19:18:35,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-14 19:18:35,344 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 19:18:35,344 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:18:35,352 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 [2024-10-14 19:18:35,544 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 [2024-10-14 19:18:35,545 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)] === [2024-10-14 19:18:35,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:18:35,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1147334253, now seen corresponding path program 1 times [2024-10-14 19:18:35,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:18:35,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [290587217] [2024-10-14 19:18:35,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:18:35,546 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 [2024-10-14 19:18:35,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:18:35,547 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) [2024-10-14 19:18:35,548 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 [2024-10-14 19:18:35,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:18:35,698 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 19:18:35,700 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:18:35,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:18:35,710 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:18:35,711 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:18:35,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [290587217] [2024-10-14 19:18:35,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [290587217] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:18:35,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:18:35,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:18:35,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267284923] [2024-10-14 19:18:35,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:18:35,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:18:35,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:18:35,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:18:35,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:18:35,712 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) [2024-10-14 19:18:36,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 19:18:36,631 INFO L93 Difference]: Finished difference Result 3042 states and 4408 transitions. [2024-10-14 19:18:36,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:18:36,632 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 [2024-10-14 19:18:36,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 19:18:36,636 INFO L225 Difference]: With dead ends: 3042 [2024-10-14 19:18:36,636 INFO L226 Difference]: Without dead ends: 3042 [2024-10-14 19:18:36,636 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 [2024-10-14 19:18:36,637 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 [2024-10-14 19:18:36,637 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] [2024-10-14 19:18:36,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3042 states. [2024-10-14 19:18:36,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3042 to 3042. [2024-10-14 19:18:36,656 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) [2024-10-14 19:18:36,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3042 states to 3042 states and 4408 transitions. [2024-10-14 19:18:36,659 INFO L78 Accepts]: Start accepts. Automaton has 3042 states and 4408 transitions. Word has length 19 [2024-10-14 19:18:36,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 19:18:36,659 INFO L471 AbstractCegarLoop]: Abstraction has 3042 states and 4408 transitions. [2024-10-14 19:18:36,659 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) [2024-10-14 19:18:36,659 INFO L276 IsEmpty]: Start isEmpty. Operand 3042 states and 4408 transitions. [2024-10-14 19:18:36,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-14 19:18:36,660 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 19:18:36,660 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] [2024-10-14 19:18:36,665 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 [2024-10-14 19:18:36,860 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 [2024-10-14 19:18:36,861 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)] === [2024-10-14 19:18:36,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:18:36,861 INFO L85 PathProgramCache]: Analyzing trace with hash 303308928, now seen corresponding path program 1 times [2024-10-14 19:18:36,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:18:36,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1538327063] [2024-10-14 19:18:36,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:18:36,861 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 [2024-10-14 19:18:36,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:18:36,863 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) [2024-10-14 19:18:36,864 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 [2024-10-14 19:18:36,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:18:36,995 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 19:18:36,996 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:18:37,000 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 [2024-10-14 19:18:37,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:18:37,040 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:18:37,040 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:18:37,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1538327063] [2024-10-14 19:18:37,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1538327063] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:18:37,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:18:37,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:18:37,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889179108] [2024-10-14 19:18:37,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:18:37,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:18:37,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:18:37,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:18:37,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:18:37,042 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) [2024-10-14 19:18:39,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 19:18:39,429 INFO L93 Difference]: Finished difference Result 3460 states and 4733 transitions. [2024-10-14 19:18:39,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:18:39,429 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 [2024-10-14 19:18:39,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 19:18:39,434 INFO L225 Difference]: With dead ends: 3460 [2024-10-14 19:18:39,434 INFO L226 Difference]: Without dead ends: 3460 [2024-10-14 19:18:39,434 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 [2024-10-14 19:18:39,434 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, 2.3s IncrementalHoareTripleChecker+Time [2024-10-14 19:18:39,435 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1676 Valid, 2354 Invalid, 2117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2106 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-14 19:18:39,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3460 states. [2024-10-14 19:18:39,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3460 to 3038. [2024-10-14 19:18:39,454 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) [2024-10-14 19:18:39,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3038 states to 3038 states and 4400 transitions. [2024-10-14 19:18:39,457 INFO L78 Accepts]: Start accepts. Automaton has 3038 states and 4400 transitions. Word has length 26 [2024-10-14 19:18:39,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 19:18:39,457 INFO L471 AbstractCegarLoop]: Abstraction has 3038 states and 4400 transitions. [2024-10-14 19:18:39,458 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) [2024-10-14 19:18:39,458 INFO L276 IsEmpty]: Start isEmpty. Operand 3038 states and 4400 transitions. [2024-10-14 19:18:39,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-14 19:18:39,458 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 19:18:39,458 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] [2024-10-14 19:18:39,464 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 [2024-10-14 19:18:39,659 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 [2024-10-14 19:18:39,659 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)] === [2024-10-14 19:18:39,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:18:39,659 INFO L85 PathProgramCache]: Analyzing trace with hash 303308929, now seen corresponding path program 1 times [2024-10-14 19:18:39,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:18:39,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [607314769] [2024-10-14 19:18:39,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:18:39,660 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 [2024-10-14 19:18:39,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:18:39,661 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) [2024-10-14 19:18:39,662 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 [2024-10-14 19:18:39,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:18:39,791 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 19:18:39,793 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:18:39,797 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 [2024-10-14 19:18:39,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:18:39,911 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:18:39,911 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:18:39,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [607314769] [2024-10-14 19:18:39,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [607314769] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:18:39,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:18:39,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:18:39,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161036207] [2024-10-14 19:18:39,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:18:39,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:18:39,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:18:39,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:18:39,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:18:39,912 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) [2024-10-14 19:18:43,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 19:18:43,109 INFO L93 Difference]: Finished difference Result 3706 states and 5140 transitions. [2024-10-14 19:18:43,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:18:43,111 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 [2024-10-14 19:18:43,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 19:18:43,117 INFO L225 Difference]: With dead ends: 3706 [2024-10-14 19:18:43,117 INFO L226 Difference]: Without dead ends: 3706 [2024-10-14 19:18:43,118 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 [2024-10-14 19:18:43,119 INFO L432 NwaCegarLoop]: 1435 mSDtfsCounter, 737 mSDsluCounter, 1814 mSDsCounter, 0 mSdLazyCounter, 2335 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s 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, 3.1s IncrementalHoareTripleChecker+Time [2024-10-14 19:18:43,119 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 3249 Invalid, 2338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2335 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-10-14 19:18:43,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3706 states. [2024-10-14 19:18:43,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3706 to 3071. [2024-10-14 19:18:43,150 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) [2024-10-14 19:18:43,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3071 states to 3071 states and 4438 transitions. [2024-10-14 19:18:43,153 INFO L78 Accepts]: Start accepts. Automaton has 3071 states and 4438 transitions. Word has length 26 [2024-10-14 19:18:43,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 19:18:43,153 INFO L471 AbstractCegarLoop]: Abstraction has 3071 states and 4438 transitions. [2024-10-14 19:18:43,153 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) [2024-10-14 19:18:43,153 INFO L276 IsEmpty]: Start isEmpty. Operand 3071 states and 4438 transitions. [2024-10-14 19:18:43,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-10-14 19:18:43,154 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 19:18:43,154 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] [2024-10-14 19:18:43,160 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 [2024-10-14 19:18:43,354 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 [2024-10-14 19:18:43,355 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)] === [2024-10-14 19:18:43,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:18:43,355 INFO L85 PathProgramCache]: Analyzing trace with hash 575845249, now seen corresponding path program 1 times [2024-10-14 19:18:43,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:18:43,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [452533505] [2024-10-14 19:18:43,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:18:43,356 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 [2024-10-14 19:18:43,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:18:43,358 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) [2024-10-14 19:18:43,360 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 [2024-10-14 19:18:43,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:18:43,526 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 19:18:43,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:18:43,532 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 [2024-10-14 19:18:43,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:18:43,579 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:18:43,579 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:18:43,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [452533505] [2024-10-14 19:18:43,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [452533505] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:18:43,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:18:43,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:18:43,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739384616] [2024-10-14 19:18:43,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:18:43,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:18:43,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:18:43,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:18:43,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:18:43,580 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) [2024-10-14 19:18:46,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 19:18:46,124 INFO L93 Difference]: Finished difference Result 3724 states and 5139 transitions. [2024-10-14 19:18:46,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:18:46,124 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 [2024-10-14 19:18:46,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 19:18:46,129 INFO L225 Difference]: With dead ends: 3724 [2024-10-14 19:18:46,129 INFO L226 Difference]: Without dead ends: 3724 [2024-10-14 19:18:46,129 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 [2024-10-14 19:18:46,129 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, 2.5s IncrementalHoareTripleChecker+Time [2024-10-14 19:18:46,129 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1536 Valid, 3531 Invalid, 2686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2675 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-14 19:18:46,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3724 states. [2024-10-14 19:18:46,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3724 to 3067. [2024-10-14 19:18:46,150 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) [2024-10-14 19:18:46,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3067 states to 3067 states and 4414 transitions. [2024-10-14 19:18:46,152 INFO L78 Accepts]: Start accepts. Automaton has 3067 states and 4414 transitions. Word has length 33 [2024-10-14 19:18:46,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 19:18:46,153 INFO L471 AbstractCegarLoop]: Abstraction has 3067 states and 4414 transitions. [2024-10-14 19:18:46,153 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) [2024-10-14 19:18:46,153 INFO L276 IsEmpty]: Start isEmpty. Operand 3067 states and 4414 transitions. [2024-10-14 19:18:46,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-10-14 19:18:46,153 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 19:18:46,153 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] [2024-10-14 19:18:46,158 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 (15)] Ended with exit code 0 [2024-10-14 19:18:46,354 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 [2024-10-14 19:18:46,355 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)] === [2024-10-14 19:18:46,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:18:46,355 INFO L85 PathProgramCache]: Analyzing trace with hash 575845250, now seen corresponding path program 1 times [2024-10-14 19:18:46,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:18:46,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1936080567] [2024-10-14 19:18:46,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:18:46,356 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 [2024-10-14 19:18:46,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:18:46,358 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) [2024-10-14 19:18:46,359 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 [2024-10-14 19:18:46,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:18:46,517 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 19:18:46,519 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:18:46,525 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 [2024-10-14 19:18:46,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:18:46,633 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:18:46,633 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:18:46,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1936080567] [2024-10-14 19:18:46,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1936080567] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:18:46,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:18:46,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:18:46,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280901800] [2024-10-14 19:18:46,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:18:46,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:18:46,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:18:46,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:18:46,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:18:46,634 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) [2024-10-14 19:18:50,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 19:18:50,249 INFO L93 Difference]: Finished difference Result 4256 states and 5942 transitions. [2024-10-14 19:18:50,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:18:50,250 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 [2024-10-14 19:18:50,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 19:18:50,253 INFO L225 Difference]: With dead ends: 4256 [2024-10-14 19:18:50,253 INFO L226 Difference]: Without dead ends: 4256 [2024-10-14 19:18:50,253 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 [2024-10-14 19:18:50,254 INFO L432 NwaCegarLoop]: 1975 mSDtfsCounter, 1081 mSDsluCounter, 2187 mSDsCounter, 0 mSdLazyCounter, 2796 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s 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, 3.6s IncrementalHoareTripleChecker+Time [2024-10-14 19:18:50,254 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1085 Valid, 4162 Invalid, 2799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2796 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-10-14 19:18:50,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4256 states. [2024-10-14 19:18:50,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4256 to 3067. [2024-10-14 19:18:50,272 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) [2024-10-14 19:18:50,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3067 states to 3067 states and 4406 transitions. [2024-10-14 19:18:50,275 INFO L78 Accepts]: Start accepts. Automaton has 3067 states and 4406 transitions. Word has length 33 [2024-10-14 19:18:50,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 19:18:50,276 INFO L471 AbstractCegarLoop]: Abstraction has 3067 states and 4406 transitions. [2024-10-14 19:18:50,276 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) [2024-10-14 19:18:50,276 INFO L276 IsEmpty]: Start isEmpty. Operand 3067 states and 4406 transitions. [2024-10-14 19:18:50,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-10-14 19:18:50,276 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 19:18:50,276 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] [2024-10-14 19:18:50,281 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 [2024-10-14 19:18:50,477 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 [2024-10-14 19:18:50,477 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)] === [2024-10-14 19:18:50,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:18:50,478 INFO L85 PathProgramCache]: Analyzing trace with hash 601006657, now seen corresponding path program 1 times [2024-10-14 19:18:50,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:18:50,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [861316412] [2024-10-14 19:18:50,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:18:50,478 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 [2024-10-14 19:18:50,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:18:50,479 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) [2024-10-14 19:18:50,481 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 [2024-10-14 19:18:50,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:18:50,642 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 19:18:50,644 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:18:50,647 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 [2024-10-14 19:18:50,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:18:50,687 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:18:50,687 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:18:50,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [861316412] [2024-10-14 19:18:50,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [861316412] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:18:50,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:18:50,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:18:50,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752007658] [2024-10-14 19:18:50,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:18:50,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:18:50,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:18:50,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:18:50,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:18:50,688 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) [2024-10-14 19:18:53,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 19:18:53,250 INFO L93 Difference]: Finished difference Result 3704 states and 5107 transitions. [2024-10-14 19:18:53,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:18:53,250 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 [2024-10-14 19:18:53,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 19:18:53,253 INFO L225 Difference]: With dead ends: 3704 [2024-10-14 19:18:53,253 INFO L226 Difference]: Without dead ends: 3704 [2024-10-14 19:18:53,253 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 [2024-10-14 19:18:53,253 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, 2.5s IncrementalHoareTripleChecker+Time [2024-10-14 19:18:53,253 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1532 Valid, 3531 Invalid, 2678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2667 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-14 19:18:53,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3704 states. [2024-10-14 19:18:53,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3704 to 3063. [2024-10-14 19:18:53,271 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) [2024-10-14 19:18:53,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3063 states to 3063 states and 4398 transitions. [2024-10-14 19:18:53,274 INFO L78 Accepts]: Start accepts. Automaton has 3063 states and 4398 transitions. Word has length 33 [2024-10-14 19:18:53,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 19:18:53,274 INFO L471 AbstractCegarLoop]: Abstraction has 3063 states and 4398 transitions. [2024-10-14 19:18:53,274 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) [2024-10-14 19:18:53,274 INFO L276 IsEmpty]: Start isEmpty. Operand 3063 states and 4398 transitions. [2024-10-14 19:18:53,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-10-14 19:18:53,275 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 19:18:53,275 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] [2024-10-14 19:18:53,283 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 [2024-10-14 19:18:53,475 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 [2024-10-14 19:18:53,476 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)] === [2024-10-14 19:18:53,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:18:53,476 INFO L85 PathProgramCache]: Analyzing trace with hash 601006658, now seen corresponding path program 1 times [2024-10-14 19:18:53,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:18:53,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [322413848] [2024-10-14 19:18:53,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:18:53,477 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 [2024-10-14 19:18:53,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:18:53,479 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) [2024-10-14 19:18:53,480 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 [2024-10-14 19:18:53,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:18:53,650 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 19:18:53,652 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:18:53,658 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 [2024-10-14 19:18:53,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:18:53,758 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:18:53,759 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:18:53,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [322413848] [2024-10-14 19:18:53,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [322413848] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:18:53,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:18:53,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:18:53,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072043680] [2024-10-14 19:18:53,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:18:53,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:18:53,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:18:53,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:18:53,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:18:53,760 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) [2024-10-14 19:18:57,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 19:18:57,447 INFO L93 Difference]: Finished difference Result 4248 states and 5926 transitions. [2024-10-14 19:18:57,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:18:57,448 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 [2024-10-14 19:18:57,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 19:18:57,451 INFO L225 Difference]: With dead ends: 4248 [2024-10-14 19:18:57,452 INFO L226 Difference]: Without dead ends: 4248 [2024-10-14 19:18:57,452 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 [2024-10-14 19:18:57,452 INFO L432 NwaCegarLoop]: 1971 mSDtfsCounter, 1073 mSDsluCounter, 2156 mSDsCounter, 0 mSdLazyCounter, 2784 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s 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, 3.6s IncrementalHoareTripleChecker+Time [2024-10-14 19:18:57,452 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1077 Valid, 4127 Invalid, 2787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2784 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-10-14 19:18:57,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4248 states. [2024-10-14 19:18:57,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4248 to 3059. [2024-10-14 19:18:57,471 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) [2024-10-14 19:18:57,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3059 states to 3059 states and 4390 transitions. [2024-10-14 19:18:57,474 INFO L78 Accepts]: Start accepts. Automaton has 3059 states and 4390 transitions. Word has length 33 [2024-10-14 19:18:57,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 19:18:57,474 INFO L471 AbstractCegarLoop]: Abstraction has 3059 states and 4390 transitions. [2024-10-14 19:18:57,474 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) [2024-10-14 19:18:57,474 INFO L276 IsEmpty]: Start isEmpty. Operand 3059 states and 4390 transitions. [2024-10-14 19:18:57,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-14 19:18:57,474 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 19:18:57,474 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] [2024-10-14 19:18:57,479 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 (18)] Forceful destruction successful, exit code 0 [2024-10-14 19:18:57,678 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 [2024-10-14 19:18:57,679 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)] === [2024-10-14 19:18:57,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:18:57,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1877036666, now seen corresponding path program 1 times [2024-10-14 19:18:57,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:18:57,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [194619294] [2024-10-14 19:18:57,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:18:57,680 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 [2024-10-14 19:18:57,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:18:57,681 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) [2024-10-14 19:18:57,681 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 [2024-10-14 19:18:57,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:18:57,831 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 19:18:57,832 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:18:57,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:18:57,864 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:18:57,864 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:18:57,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [194619294] [2024-10-14 19:18:57,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [194619294] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:18:57,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:18:57,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:18:57,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275332174] [2024-10-14 19:18:57,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:18:57,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:18:57,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:18:57,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:18:57,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:18:57,867 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) [2024-10-14 19:18:58,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 19:18:58,785 INFO L93 Difference]: Finished difference Result 3047 states and 4366 transitions. [2024-10-14 19:18:58,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:18:58,786 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 [2024-10-14 19:18:58,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 19:18:58,789 INFO L225 Difference]: With dead ends: 3047 [2024-10-14 19:18:58,789 INFO L226 Difference]: Without dead ends: 3047 [2024-10-14 19:18:58,789 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 [2024-10-14 19:18:58,790 INFO L432 NwaCegarLoop]: 1644 mSDtfsCounter, 21 mSDsluCounter, 3265 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2024-10-14 19:18:58,790 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 4909 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-14 19:18:58,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3047 states. [2024-10-14 19:18:58,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3047 to 3047. [2024-10-14 19:18:58,805 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) [2024-10-14 19:18:58,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3047 states to 3047 states and 4366 transitions. [2024-10-14 19:18:58,807 INFO L78 Accepts]: Start accepts. Automaton has 3047 states and 4366 transitions. Word has length 40 [2024-10-14 19:18:58,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 19:18:58,808 INFO L471 AbstractCegarLoop]: Abstraction has 3047 states and 4366 transitions. [2024-10-14 19:18:58,808 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) [2024-10-14 19:18:58,808 INFO L276 IsEmpty]: Start isEmpty. Operand 3047 states and 4366 transitions. [2024-10-14 19:18:58,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-10-14 19:18:58,808 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 19:18:58,808 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] [2024-10-14 19:18:58,816 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 [2024-10-14 19:18:59,008 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 [2024-10-14 19:18:59,009 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)] === [2024-10-14 19:18:59,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:18:59,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1228682057, now seen corresponding path program 1 times [2024-10-14 19:18:59,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:18:59,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1498825931] [2024-10-14 19:18:59,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:18:59,010 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 [2024-10-14 19:18:59,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:18:59,011 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) [2024-10-14 19:18:59,013 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 [2024-10-14 19:18:59,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:18:59,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 19:18:59,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:18:59,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:18:59,303 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:18:59,303 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:18:59,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1498825931] [2024-10-14 19:18:59,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1498825931] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:18:59,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:18:59,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:18:59,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758782155] [2024-10-14 19:18:59,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:18:59,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:18:59,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:18:59,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:18:59,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:18:59,306 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) [2024-10-14 19:19:00,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 19:19:00,312 INFO L93 Difference]: Finished difference Result 4508 states and 6234 transitions. [2024-10-14 19:19:00,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:19:00,313 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 [2024-10-14 19:19:00,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 19:19:00,316 INFO L225 Difference]: With dead ends: 4508 [2024-10-14 19:19:00,316 INFO L226 Difference]: Without dead ends: 4508 [2024-10-14 19:19:00,316 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 [2024-10-14 19:19:00,317 INFO L432 NwaCegarLoop]: 1712 mSDtfsCounter, 1175 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.0s IncrementalHoareTripleChecker+Time [2024-10-14 19:19:00,317 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1182 Valid, 3274 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-14 19:19:00,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4508 states. [2024-10-14 19:19:00,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4508 to 3928. [2024-10-14 19:19:00,352 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) [2024-10-14 19:19:00,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3928 states to 3928 states and 6051 transitions. [2024-10-14 19:19:00,356 INFO L78 Accepts]: Start accepts. Automaton has 3928 states and 6051 transitions. Word has length 44 [2024-10-14 19:19:00,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 19:19:00,356 INFO L471 AbstractCegarLoop]: Abstraction has 3928 states and 6051 transitions. [2024-10-14 19:19:00,357 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) [2024-10-14 19:19:00,357 INFO L276 IsEmpty]: Start isEmpty. Operand 3928 states and 6051 transitions. [2024-10-14 19:19:00,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-14 19:19:00,357 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 19:19:00,357 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] [2024-10-14 19:19:00,362 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 [2024-10-14 19:19:00,557 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 [2024-10-14 19:19:00,558 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)] === [2024-10-14 19:19:00,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:19:00,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1257793787, now seen corresponding path program 1 times [2024-10-14 19:19:00,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:19:00,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1355489540] [2024-10-14 19:19:00,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:19:00,559 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 [2024-10-14 19:19:00,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:19:00,561 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) [2024-10-14 19:19:00,562 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 [2024-10-14 19:19:00,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:19:00,766 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 19:19:00,768 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:19:00,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:19:00,799 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:19:00,799 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:19:00,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1355489540] [2024-10-14 19:19:00,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1355489540] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:19:00,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:19:00,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:19:00,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620188642] [2024-10-14 19:19:00,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:19:00,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:19:00,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:19:00,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:19:00,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:19:00,801 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) [2024-10-14 19:19:01,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 19:19:01,689 INFO L93 Difference]: Finished difference Result 3886 states and 5981 transitions. [2024-10-14 19:19:01,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:19:01,690 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 [2024-10-14 19:19:01,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 19:19:01,694 INFO L225 Difference]: With dead ends: 3886 [2024-10-14 19:19:01,694 INFO L226 Difference]: Without dead ends: 3886 [2024-10-14 19:19:01,694 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 [2024-10-14 19:19:01,695 INFO L432 NwaCegarLoop]: 1640 mSDtfsCounter, 21 mSDsluCounter, 3257 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2024-10-14 19:19:01,695 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 4897 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-14 19:19:01,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3886 states. [2024-10-14 19:19:01,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3886 to 3886. [2024-10-14 19:19:01,725 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) [2024-10-14 19:19:01,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3886 states to 3886 states and 5981 transitions. [2024-10-14 19:19:01,729 INFO L78 Accepts]: Start accepts. Automaton has 3886 states and 5981 transitions. Word has length 49 [2024-10-14 19:19:01,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 19:19:01,730 INFO L471 AbstractCegarLoop]: Abstraction has 3886 states and 5981 transitions. [2024-10-14 19:19:01,730 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) [2024-10-14 19:19:01,730 INFO L276 IsEmpty]: Start isEmpty. Operand 3886 states and 5981 transitions. [2024-10-14 19:19:01,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-14 19:19:01,731 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 19:19:01,731 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] [2024-10-14 19:19:01,737 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 (21)] Ended with exit code 0 [2024-10-14 19:19:01,935 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 [2024-10-14 19:19:01,936 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)] === [2024-10-14 19:19:01,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:19:01,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1745245856, now seen corresponding path program 1 times [2024-10-14 19:19:01,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:19:01,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1883640893] [2024-10-14 19:19:01,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:19:01,937 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 [2024-10-14 19:19:01,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:19:01,939 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) [2024-10-14 19:19:01,940 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 [2024-10-14 19:19:02,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:19:02,154 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 19:19:02,156 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:19:02,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:19:02,176 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:19:02,176 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:19:02,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1883640893] [2024-10-14 19:19:02,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1883640893] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:19:02,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:19:02,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:19:02,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706810489] [2024-10-14 19:19:02,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:19:02,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:19:02,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:19:02,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:19:02,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:19:02,177 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) [2024-10-14 19:19:03,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 19:19:03,048 INFO L93 Difference]: Finished difference Result 3868 states and 5951 transitions. [2024-10-14 19:19:03,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:19:03,049 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 [2024-10-14 19:19:03,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 19:19:03,052 INFO L225 Difference]: With dead ends: 3868 [2024-10-14 19:19:03,052 INFO L226 Difference]: Without dead ends: 3868 [2024-10-14 19:19:03,052 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 [2024-10-14 19:19:03,052 INFO L432 NwaCegarLoop]: 1636 mSDtfsCounter, 15 mSDsluCounter, 3255 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2024-10-14 19:19:03,053 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 4891 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-14 19:19:03,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3868 states. [2024-10-14 19:19:03,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3868 to 3868. [2024-10-14 19:19:03,073 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) [2024-10-14 19:19:03,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3868 states to 3868 states and 5951 transitions. [2024-10-14 19:19:03,076 INFO L78 Accepts]: Start accepts. Automaton has 3868 states and 5951 transitions. Word has length 52 [2024-10-14 19:19:03,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 19:19:03,076 INFO L471 AbstractCegarLoop]: Abstraction has 3868 states and 5951 transitions. [2024-10-14 19:19:03,077 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) [2024-10-14 19:19:03,077 INFO L276 IsEmpty]: Start isEmpty. Operand 3868 states and 5951 transitions. [2024-10-14 19:19:03,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-14 19:19:03,077 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 19:19:03,077 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] [2024-10-14 19:19:03,083 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 (22)] Forceful destruction successful, exit code 0 [2024-10-14 19:19:03,277 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 [2024-10-14 19:19:03,278 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)] === [2024-10-14 19:19:03,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:19:03,278 INFO L85 PathProgramCache]: Analyzing trace with hash -165141037, now seen corresponding path program 1 times [2024-10-14 19:19:03,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:19:03,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1841028826] [2024-10-14 19:19:03,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:19:03,279 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 [2024-10-14 19:19:03,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:19:03,280 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) [2024-10-14 19:19:03,281 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 [2024-10-14 19:19:03,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:19:03,481 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 19:19:03,483 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:19:03,487 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-14 19:19:03,488 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-14 19:19:03,490 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 [2024-10-14 19:19:03,511 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 19:19:03,511 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 [2024-10-14 19:19:03,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:19:03,537 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:19:03,537 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:19:03,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1841028826] [2024-10-14 19:19:03,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1841028826] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:19:03,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:19:03,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:19:03,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144789914] [2024-10-14 19:19:03,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:19:03,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:19:03,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:19:03,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:19:03,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:19:03,538 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) [2024-10-14 19:19:05,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 19:19:05,454 INFO L93 Difference]: Finished difference Result 5120 states and 7760 transitions. [2024-10-14 19:19:05,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:19:05,456 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 [2024-10-14 19:19:05,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 19:19:05,461 INFO L225 Difference]: With dead ends: 5120 [2024-10-14 19:19:05,461 INFO L226 Difference]: Without dead ends: 5120 [2024-10-14 19:19:05,461 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 [2024-10-14 19:19:05,461 INFO L432 NwaCegarLoop]: 1590 mSDtfsCounter, 1535 mSDsluCounter, 2549 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s 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, 1.9s IncrementalHoareTripleChecker+Time [2024-10-14 19:19:05,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1544 Valid, 4139 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-10-14 19:19:05,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5120 states. [2024-10-14 19:19:05,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5120 to 3837. [2024-10-14 19:19:05,497 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) [2024-10-14 19:19:05,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3837 states to 3837 states and 5919 transitions. [2024-10-14 19:19:05,501 INFO L78 Accepts]: Start accepts. Automaton has 3837 states and 5919 transitions. Word has length 55 [2024-10-14 19:19:05,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 19:19:05,501 INFO L471 AbstractCegarLoop]: Abstraction has 3837 states and 5919 transitions. [2024-10-14 19:19:05,501 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) [2024-10-14 19:19:05,501 INFO L276 IsEmpty]: Start isEmpty. Operand 3837 states and 5919 transitions. [2024-10-14 19:19:05,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-14 19:19:05,501 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 19:19:05,501 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] [2024-10-14 19:19:05,507 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 (23)] Forceful destruction successful, exit code 0 [2024-10-14 19:19:05,702 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 [2024-10-14 19:19:05,702 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)] === [2024-10-14 19:19:05,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:19:05,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1835739427, now seen corresponding path program 1 times [2024-10-14 19:19:05,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:19:05,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1158183953] [2024-10-14 19:19:05,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:19:05,703 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 [2024-10-14 19:19:05,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:19:05,704 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) [2024-10-14 19:19:05,705 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 [2024-10-14 19:19:05,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:19:05,913 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 19:19:05,915 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:19:06,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:19:06,050 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:19:06,050 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:19:06,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1158183953] [2024-10-14 19:19:06,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1158183953] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:19:06,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:19:06,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:19:06,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828014474] [2024-10-14 19:19:06,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:19:06,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:19:06,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:19:06,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:19:06,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:19:06,051 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) [2024-10-14 19:19:06,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 19:19:06,921 INFO L93 Difference]: Finished difference Result 5288 states and 7837 transitions. [2024-10-14 19:19:06,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:19:06,921 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 [2024-10-14 19:19:06,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 19:19:06,926 INFO L225 Difference]: With dead ends: 5288 [2024-10-14 19:19:06,926 INFO L226 Difference]: Without dead ends: 5288 [2024-10-14 19:19:06,926 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 [2024-10-14 19:19:06,927 INFO L432 NwaCegarLoop]: 1936 mSDtfsCounter, 914 mSDsluCounter, 1590 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2024-10-14 19:19:06,927 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [920 Valid, 3526 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-14 19:19:06,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5288 states. [2024-10-14 19:19:06,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5288 to 4758. [2024-10-14 19:19:06,976 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) [2024-10-14 19:19:06,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4758 states to 4758 states and 7617 transitions. [2024-10-14 19:19:06,982 INFO L78 Accepts]: Start accepts. Automaton has 4758 states and 7617 transitions. Word has length 53 [2024-10-14 19:19:06,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 19:19:06,982 INFO L471 AbstractCegarLoop]: Abstraction has 4758 states and 7617 transitions. [2024-10-14 19:19:06,982 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) [2024-10-14 19:19:06,982 INFO L276 IsEmpty]: Start isEmpty. Operand 4758 states and 7617 transitions. [2024-10-14 19:19:06,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-14 19:19:06,982 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 19:19:06,983 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] [2024-10-14 19:19:06,989 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 (24)] Ended with exit code 0 [2024-10-14 19:19:07,183 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 [2024-10-14 19:19:07,183 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)] === [2024-10-14 19:19:07,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:19:07,184 INFO L85 PathProgramCache]: Analyzing trace with hash -801247076, now seen corresponding path program 1 times [2024-10-14 19:19:07,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:19:07,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [76819564] [2024-10-14 19:19:07,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:19:07,184 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 [2024-10-14 19:19:07,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:19:07,185 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) [2024-10-14 19:19:07,186 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 [2024-10-14 19:19:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:19:07,439 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 19:19:07,441 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:19:07,445 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-14 19:19:07,446 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-14 19:19:07,446 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-14 19:19:07,447 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 [2024-10-14 19:19:07,530 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 19:19:07,530 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 [2024-10-14 19:19:07,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:19:07,537 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:19:07,537 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:19:07,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [76819564] [2024-10-14 19:19:07,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [76819564] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:19:07,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:19:07,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:19:07,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233469145] [2024-10-14 19:19:07,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:19:07,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:19:07,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:19:07,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:19:07,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:19:07,538 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) [2024-10-14 19:19:09,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 19:19:09,019 INFO L93 Difference]: Finished difference Result 5075 states and 7696 transitions. [2024-10-14 19:19:09,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:19:09,020 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 [2024-10-14 19:19:09,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 19:19:09,024 INFO L225 Difference]: With dead ends: 5075 [2024-10-14 19:19:09,025 INFO L226 Difference]: Without dead ends: 5075 [2024-10-14 19:19:09,025 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 [2024-10-14 19:19:09,025 INFO L432 NwaCegarLoop]: 1818 mSDtfsCounter, 770 mSDsluCounter, 3393 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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, 1.4s IncrementalHoareTripleChecker+Time [2024-10-14 19:19:09,025 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 5211 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-14 19:19:09,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5075 states. [2024-10-14 19:19:09,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5075 to 4390. [2024-10-14 19:19:09,062 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) [2024-10-14 19:19:09,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4390 states to 4390 states and 6986 transitions. [2024-10-14 19:19:09,066 INFO L78 Accepts]: Start accepts. Automaton has 4390 states and 6986 transitions. Word has length 56 [2024-10-14 19:19:09,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 19:19:09,066 INFO L471 AbstractCegarLoop]: Abstraction has 4390 states and 6986 transitions. [2024-10-14 19:19:09,066 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) [2024-10-14 19:19:09,066 INFO L276 IsEmpty]: Start isEmpty. Operand 4390 states and 6986 transitions. [2024-10-14 19:19:09,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-14 19:19:09,067 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 19:19:09,067 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] [2024-10-14 19:19:09,074 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 [2024-10-14 19:19:09,267 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 [2024-10-14 19:19:09,268 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)] === [2024-10-14 19:19:09,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:19:09,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1136067489, now seen corresponding path program 1 times [2024-10-14 19:19:09,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:19:09,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [73700240] [2024-10-14 19:19:09,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:19:09,269 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 [2024-10-14 19:19:09,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:19:09,270 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) [2024-10-14 19:19:09,270 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 [2024-10-14 19:19:09,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:19:09,533 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-14 19:19:09,535 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:19:09,539 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 [2024-10-14 19:19:09,543 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 [2024-10-14 19:19:09,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 19:19:09,793 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 [2024-10-14 19:19:09,799 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-14 19:19:09,799 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 [2024-10-14 19:19:09,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:19:09,806 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:19:09,806 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:19:09,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [73700240] [2024-10-14 19:19:09,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [73700240] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:19:09,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:19:09,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:19:09,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900339500] [2024-10-14 19:19:09,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:19:09,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:19:09,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:19:09,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:19:09,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:19:09,807 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) [2024-10-14 19:19:11,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 19:19:11,891 INFO L93 Difference]: Finished difference Result 4306 states and 6743 transitions. [2024-10-14 19:19:11,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:19:11,892 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 [2024-10-14 19:19:11,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 19:19:11,896 INFO L225 Difference]: With dead ends: 4306 [2024-10-14 19:19:11,896 INFO L226 Difference]: Without dead ends: 4306 [2024-10-14 19:19:11,896 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 [2024-10-14 19:19:11,896 INFO L432 NwaCegarLoop]: 660 mSDtfsCounter, 1448 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 1400 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s 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, 2.1s IncrementalHoareTripleChecker+Time [2024-10-14 19:19:11,896 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1458 Valid, 834 Invalid, 1491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1400 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-14 19:19:11,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4306 states. [2024-10-14 19:19:11,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4306 to 4196. [2024-10-14 19:19:11,940 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) [2024-10-14 19:19:11,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4196 states to 4196 states and 6517 transitions. [2024-10-14 19:19:11,943 INFO L78 Accepts]: Start accepts. Automaton has 4196 states and 6517 transitions. Word has length 56 [2024-10-14 19:19:11,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 19:19:11,943 INFO L471 AbstractCegarLoop]: Abstraction has 4196 states and 6517 transitions. [2024-10-14 19:19:11,944 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) [2024-10-14 19:19:11,944 INFO L276 IsEmpty]: Start isEmpty. Operand 4196 states and 6517 transitions. [2024-10-14 19:19:11,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-14 19:19:11,944 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 19:19:11,944 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] [2024-10-14 19:19:11,952 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 [2024-10-14 19:19:12,144 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 [2024-10-14 19:19:12,144 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)] === [2024-10-14 19:19:12,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:19:12,145 INFO L85 PathProgramCache]: Analyzing trace with hash -34246570, now seen corresponding path program 1 times [2024-10-14 19:19:12,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:19:12,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [786175563] [2024-10-14 19:19:12,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:19:12,146 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 [2024-10-14 19:19:12,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:19:12,147 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) [2024-10-14 19:19:12,148 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 [2024-10-14 19:19:12,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:19:12,375 INFO L255 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 19:19:12,377 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:19:12,384 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 [2024-10-14 19:19:12,394 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 [2024-10-14 19:19:12,408 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 [2024-10-14 19:19:12,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:19:12,415 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:19:12,415 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:19:12,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [786175563] [2024-10-14 19:19:12,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [786175563] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:19:12,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:19:12,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:19:12,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496856092] [2024-10-14 19:19:12,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:19:12,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:19:12,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:19:12,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:19:12,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:19:12,416 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) [2024-10-14 19:19:14,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 19:19:14,966 INFO L93 Difference]: Finished difference Result 4195 states and 6514 transitions. [2024-10-14 19:19:14,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 19:19:14,967 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 [2024-10-14 19:19:14,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 19:19:14,970 INFO L225 Difference]: With dead ends: 4195 [2024-10-14 19:19:14,970 INFO L226 Difference]: Without dead ends: 4195 [2024-10-14 19:19:14,970 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 [2024-10-14 19:19:14,971 INFO L432 NwaCegarLoop]: 1564 mSDtfsCounter, 2 mSDsluCounter, 2711 mSDsCounter, 0 mSdLazyCounter, 2729 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s 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, 2.5s IncrementalHoareTripleChecker+Time [2024-10-14 19:19:14,971 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 4275 Invalid, 2730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2729 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-14 19:19:14,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4195 states. [2024-10-14 19:19:14,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4195 to 4195. [2024-10-14 19:19:14,990 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) [2024-10-14 19:19:14,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4195 states to 4195 states and 6514 transitions. [2024-10-14 19:19:14,993 INFO L78 Accepts]: Start accepts. Automaton has 4195 states and 6514 transitions. Word has length 60 [2024-10-14 19:19:14,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 19:19:14,993 INFO L471 AbstractCegarLoop]: Abstraction has 4195 states and 6514 transitions. [2024-10-14 19:19:14,993 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) [2024-10-14 19:19:14,993 INFO L276 IsEmpty]: Start isEmpty. Operand 4195 states and 6514 transitions. [2024-10-14 19:19:14,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-14 19:19:14,994 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 19:19:14,994 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] [2024-10-14 19:19:15,002 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 (27)] Forceful destruction successful, exit code 0 [2024-10-14 19:19:15,194 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 [2024-10-14 19:19:15,194 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)] === [2024-10-14 19:19:15,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:19:15,195 INFO L85 PathProgramCache]: Analyzing trace with hash -34246569, now seen corresponding path program 1 times [2024-10-14 19:19:15,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:19:15,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2095524255] [2024-10-14 19:19:15,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:19:15,195 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 [2024-10-14 19:19:15,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:19:15,196 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) [2024-10-14 19:19:15,197 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 [2024-10-14 19:19:15,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:19:15,426 INFO L255 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 19:19:15,428 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:19:15,435 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 [2024-10-14 19:19:15,444 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 [2024-10-14 19:19:15,447 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 [2024-10-14 19:19:15,467 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 [2024-10-14 19:19:15,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:19:15,477 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:19:15,477 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:19:15,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2095524255] [2024-10-14 19:19:15,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2095524255] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:19:15,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:19:15,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:19:15,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823544998] [2024-10-14 19:19:15,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:19:15,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:19:15,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:19:15,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:19:15,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:19:15,478 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) [2024-10-14 19:19:18,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 19:19:18,742 INFO L93 Difference]: Finished difference Result 4194 states and 6511 transitions. [2024-10-14 19:19:18,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 19:19:18,743 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 [2024-10-14 19:19:18,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 19:19:18,747 INFO L225 Difference]: With dead ends: 4194 [2024-10-14 19:19:18,747 INFO L226 Difference]: Without dead ends: 4194 [2024-10-14 19:19:18,747 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 [2024-10-14 19:19:18,748 INFO L432 NwaCegarLoop]: 1564 mSDtfsCounter, 1 mSDsluCounter, 2675 mSDsCounter, 0 mSdLazyCounter, 2762 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s 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, 3.2s IncrementalHoareTripleChecker+Time [2024-10-14 19:19:18,748 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4239 Invalid, 2763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2762 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-10-14 19:19:18,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4194 states. [2024-10-14 19:19:18,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4194 to 4194. [2024-10-14 19:19:18,771 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) [2024-10-14 19:19:18,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4194 states to 4194 states and 6511 transitions. [2024-10-14 19:19:18,775 INFO L78 Accepts]: Start accepts. Automaton has 4194 states and 6511 transitions. Word has length 60 [2024-10-14 19:19:18,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 19:19:18,775 INFO L471 AbstractCegarLoop]: Abstraction has 4194 states and 6511 transitions. [2024-10-14 19:19:18,775 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) [2024-10-14 19:19:18,775 INFO L276 IsEmpty]: Start isEmpty. Operand 4194 states and 6511 transitions. [2024-10-14 19:19:18,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-14 19:19:18,776 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 19:19:18,776 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] [2024-10-14 19:19:18,783 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 [2024-10-14 19:19:18,976 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 [2024-10-14 19:19:18,976 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)] === [2024-10-14 19:19:18,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:19:18,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1617583706, now seen corresponding path program 1 times [2024-10-14 19:19:18,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:19:18,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1757131294] [2024-10-14 19:19:18,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:19:18,977 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 [2024-10-14 19:19:18,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:19:18,978 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) [2024-10-14 19:19:18,979 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 [2024-10-14 19:19:19,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:19:19,234 INFO L255 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 19:19:19,236 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:19:19,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:19:19,245 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:19:19,245 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:19:19,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1757131294] [2024-10-14 19:19:19,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1757131294] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:19:19,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:19:19,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:19:19,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105612649] [2024-10-14 19:19:19,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:19:19,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:19:19,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:19:19,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:19:19,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:19:19,246 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) [2024-10-14 19:19:20,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 19:19:20,144 INFO L93 Difference]: Finished difference Result 4196 states and 6518 transitions. [2024-10-14 19:19:20,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:19:20,144 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 [2024-10-14 19:19:20,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 19:19:20,150 INFO L225 Difference]: With dead ends: 4196 [2024-10-14 19:19:20,150 INFO L226 Difference]: Without dead ends: 4196 [2024-10-14 19:19:20,150 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 [2024-10-14 19:19:20,151 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, 0.9s IncrementalHoareTripleChecker+Time [2024-10-14 19:19:20,151 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4683 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-14 19:19:20,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4196 states. [2024-10-14 19:19:20,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4196 to 4196. [2024-10-14 19:19:20,180 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) [2024-10-14 19:19:20,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4196 states to 4196 states and 6518 transitions. [2024-10-14 19:19:20,184 INFO L78 Accepts]: Start accepts. Automaton has 4196 states and 6518 transitions. Word has length 66 [2024-10-14 19:19:20,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 19:19:20,184 INFO L471 AbstractCegarLoop]: Abstraction has 4196 states and 6518 transitions. [2024-10-14 19:19:20,184 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) [2024-10-14 19:19:20,184 INFO L276 IsEmpty]: Start isEmpty. Operand 4196 states and 6518 transitions. [2024-10-14 19:19:20,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-14 19:19:20,185 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 19:19:20,185 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] [2024-10-14 19:19:20,191 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 (29)] Forceful destruction successful, exit code 0 [2024-10-14 19:19:20,385 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 [2024-10-14 19:19:20,386 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)] === [2024-10-14 19:19:20,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:19:20,386 INFO L85 PathProgramCache]: Analyzing trace with hash -2144560944, now seen corresponding path program 1 times [2024-10-14 19:19:20,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:19:20,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [136474200] [2024-10-14 19:19:20,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:19:20,386 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 [2024-10-14 19:19:20,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:19:20,388 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) [2024-10-14 19:19:20,388 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 [2024-10-14 19:19:20,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:19:20,633 INFO L255 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 19:19:20,635 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:19:20,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:19:20,650 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:19:20,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:19:20,696 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:19:20,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [136474200] [2024-10-14 19:19:20,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [136474200] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:19:20,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:19:20,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-10-14 19:19:20,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179439565] [2024-10-14 19:19:20,696 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:19:20,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 19:19:20,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:19:20,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 19:19:20,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-14 19:19:20,697 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) [2024-10-14 19:19:22,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 19:19:22,119 INFO L93 Difference]: Finished difference Result 4205 states and 6536 transitions. [2024-10-14 19:19:22,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 19:19:22,120 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 [2024-10-14 19:19:22,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 19:19:22,126 INFO L225 Difference]: With dead ends: 4205 [2024-10-14 19:19:22,127 INFO L226 Difference]: Without dead ends: 4205 [2024-10-14 19:19:22,127 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2024-10-14 19:19:22,127 INFO L432 NwaCegarLoop]: 1561 mSDtfsCounter, 4 mSDsluCounter, 6230 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.4s IncrementalHoareTripleChecker+Time [2024-10-14 19:19:22,127 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 7791 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 989 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-14 19:19:22,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4205 states. [2024-10-14 19:19:22,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4205 to 4204. [2024-10-14 19:19:22,155 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) [2024-10-14 19:19:22,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4204 states to 4204 states and 6531 transitions. [2024-10-14 19:19:22,160 INFO L78 Accepts]: Start accepts. Automaton has 4204 states and 6531 transitions. Word has length 67 [2024-10-14 19:19:22,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 19:19:22,160 INFO L471 AbstractCegarLoop]: Abstraction has 4204 states and 6531 transitions. [2024-10-14 19:19:22,160 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) [2024-10-14 19:19:22,160 INFO L276 IsEmpty]: Start isEmpty. Operand 4204 states and 6531 transitions. [2024-10-14 19:19:22,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-14 19:19:22,161 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 19:19:22,161 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] [2024-10-14 19:19:22,168 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 [2024-10-14 19:19:22,361 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 [2024-10-14 19:19:22,362 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)] === [2024-10-14 19:19:22,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:19:22,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1549814746, now seen corresponding path program 2 times [2024-10-14 19:19:22,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:19:22,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2066189088] [2024-10-14 19:19:22,363 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:19:22,363 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 [2024-10-14 19:19:22,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:19:22,364 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) [2024-10-14 19:19:22,364 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 [2024-10-14 19:19:22,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:19:22,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:19:22,801 INFO L255 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 19:19:22,803 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:19:22,853 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:19:22,853 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:19:22,973 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:19:22,974 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:19:22,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2066189088] [2024-10-14 19:19:22,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2066189088] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:19:22,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:19:22,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2024-10-14 19:19:22,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593871456] [2024-10-14 19:19:22,974 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:19:22,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-14 19:19:22,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:19:22,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-14 19:19:22,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2024-10-14 19:19:22,975 INFO L87 Difference]: Start difference. First operand 4204 states and 6531 transitions. Second operand has 14 states, 12 states have (on average 6.166666666666667) internal successors, (74), 14 states have internal predecessors, (74), 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) [2024-10-14 19:19:25,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 19:19:25,267 INFO L93 Difference]: Finished difference Result 4216 states and 6549 transitions. [2024-10-14 19:19:25,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-14 19:19:25,268 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 6.166666666666667) internal successors, (74), 14 states have internal predecessors, (74), 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 70 [2024-10-14 19:19:25,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 19:19:25,275 INFO L225 Difference]: With dead ends: 4216 [2024-10-14 19:19:25,275 INFO L226 Difference]: Without dead ends: 4213 [2024-10-14 19:19:25,275 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=182, Invalid=324, Unknown=0, NotChecked=0, Total=506 [2024-10-14 19:19:25,275 INFO L432 NwaCegarLoop]: 1561 mSDtfsCounter, 7 mSDsluCounter, 9346 mSDsCounter, 0 mSdLazyCounter, 1489 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 10907 SdHoareTripleChecker+Invalid, 1500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-14 19:19:25,276 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 10907 Invalid, 1500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1489 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-14 19:19:25,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4213 states. [2024-10-14 19:19:25,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4213 to 4213. [2024-10-14 19:19:25,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4213 states, 3434 states have (on average 1.878567268491555) internal successors, (6451), 4169 states have internal predecessors, (6451), 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) [2024-10-14 19:19:25,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4213 states to 4213 states and 6542 transitions. [2024-10-14 19:19:25,308 INFO L78 Accepts]: Start accepts. Automaton has 4213 states and 6542 transitions. Word has length 70 [2024-10-14 19:19:25,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 19:19:25,308 INFO L471 AbstractCegarLoop]: Abstraction has 4213 states and 6542 transitions. [2024-10-14 19:19:25,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 6.166666666666667) internal successors, (74), 14 states have internal predecessors, (74), 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) [2024-10-14 19:19:25,308 INFO L276 IsEmpty]: Start isEmpty. Operand 4213 states and 6542 transitions. [2024-10-14 19:19:25,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-14 19:19:25,309 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 19:19:25,309 INFO L215 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:19:25,318 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 (31)] Ended with exit code 0 [2024-10-14 19:19:25,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /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 [2024-10-14 19:19:25,510 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-10-14 19:19:25,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:19:25,510 INFO L85 PathProgramCache]: Analyzing trace with hash 923797530, now seen corresponding path program 3 times [2024-10-14 19:19:25,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:19:25,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [224726652] [2024-10-14 19:19:25,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 19:19:25,511 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 [2024-10-14 19:19:25,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:19:25,512 INFO L229 MonitoredProcess]: Starting monitored process 32 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) [2024-10-14 19:19:25,512 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 (32)] Waiting until timeout for monitored process [2024-10-14 19:19:26,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-10-14 19:19:26,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:19:26,084 INFO L255 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-14 19:19:26,086 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:19:26,181 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:19:26,181 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:19:26,570 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:19:26,570 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:19:26,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [224726652] [2024-10-14 19:19:26,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [224726652] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:19:26,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:19:26,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2024-10-14 19:19:26,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750054874] [2024-10-14 19:19:26,570 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:19:26,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-14 19:19:26,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:19:26,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-14 19:19:26,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2024-10-14 19:19:26,572 INFO L87 Difference]: Start difference. First operand 4213 states and 6542 transitions. Second operand has 26 states, 24 states have (on average 3.5833333333333335) internal successors, (86), 26 states have internal predecessors, (86), 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) [2024-10-14 19:19:31,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 19:19:31,618 INFO L93 Difference]: Finished difference Result 4234 states and 6578 transitions. [2024-10-14 19:19:31,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-10-14 19:19:31,618 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 3.5833333333333335) internal successors, (86), 26 states have internal predecessors, (86), 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 76 [2024-10-14 19:19:31,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 19:19:31,636 INFO L225 Difference]: With dead ends: 4234 [2024-10-14 19:19:31,636 INFO L226 Difference]: Without dead ends: 4231 [2024-10-14 19:19:31,636 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2024-10-14 19:19:31,637 INFO L432 NwaCegarLoop]: 1561 mSDtfsCounter, 13 mSDsluCounter, 23373 mSDsCounter, 0 mSdLazyCounter, 3543 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 24934 SdHoareTripleChecker+Invalid, 3558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 3543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-10-14 19:19:31,637 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 24934 Invalid, 3558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 3543 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-10-14 19:19:31,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4231 states. [2024-10-14 19:19:31,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4231 to 4231. [2024-10-14 19:19:31,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4231 states, 3452 states have (on average 1.8754345307068365) internal successors, (6474), 4187 states have internal predecessors, (6474), 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) [2024-10-14 19:19:31,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4231 states to 4231 states and 6565 transitions. [2024-10-14 19:19:31,665 INFO L78 Accepts]: Start accepts. Automaton has 4231 states and 6565 transitions. Word has length 76 [2024-10-14 19:19:31,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 19:19:31,665 INFO L471 AbstractCegarLoop]: Abstraction has 4231 states and 6565 transitions. [2024-10-14 19:19:31,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 3.5833333333333335) internal successors, (86), 26 states have internal predecessors, (86), 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) [2024-10-14 19:19:31,665 INFO L276 IsEmpty]: Start isEmpty. Operand 4231 states and 6565 transitions. [2024-10-14 19:19:31,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-10-14 19:19:31,666 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 19:19:31,666 INFO L215 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:19:31,675 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 (32)] Forceful destruction successful, exit code 0 [2024-10-14 19:19:31,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /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 [2024-10-14 19:19:31,867 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-10-14 19:19:31,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:19:31,867 INFO L85 PathProgramCache]: Analyzing trace with hash -2058817382, now seen corresponding path program 4 times [2024-10-14 19:19:31,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:19:31,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [531678176] [2024-10-14 19:19:31,868 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 19:19:31,868 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 [2024-10-14 19:19:31,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:19:31,869 INFO L229 MonitoredProcess]: Starting monitored process 33 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) [2024-10-14 19:19:31,870 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 (33)] Waiting until timeout for monitored process [2024-10-14 19:19:32,279 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 19:19:32,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:19:32,291 INFO L255 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-14 19:19:32,293 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:19:32,549 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:19:32,550 INFO L311 TraceCheckSpWp]: Computing backward predicates...