./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.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 ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 03:30:05,022 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 03:30:05,111 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-17 03:30:05,115 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 03:30:05,115 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 03:30:05,144 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 03:30:05,144 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 03:30:05,145 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 03:30:05,145 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 03:30:05,149 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 03:30:05,149 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 03:30:05,149 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 03:30:05,150 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 03:30:05,150 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 03:30:05,150 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 03:30:05,151 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 03:30:05,151 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 03:30:05,151 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 03:30:05,151 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 03:30:05,152 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 03:30:05,152 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 03:30:05,154 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 03:30:05,154 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 03:30:05,154 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 03:30:05,155 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 03:30:05,155 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 03:30:05,155 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 03:30:05,155 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 03:30:05,156 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 03:30:05,156 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 03:30:05,157 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 03:30:05,157 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 03:30:05,157 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 03:30:05,158 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:30:05,158 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 03:30:05,158 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 03:30:05,158 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 03:30:05,159 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 03:30:05,159 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 03:30:05,159 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 03:30:05,159 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 03:30:05,160 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 03:30:05,160 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 [2024-11-17 03:30:05,409 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 03:30:05,435 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 03:30:05,439 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 03:30:05,440 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 03:30:05,441 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 03:30:05,442 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2024-11-17 03:30:07,047 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 03:30:07,316 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 03:30:07,317 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2024-11-17 03:30:07,340 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55d3a893d/454c58b54b3e44c79123b19b431df12e/FLAG0ec42fd56 [2024-11-17 03:30:07,356 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55d3a893d/454c58b54b3e44c79123b19b431df12e [2024-11-17 03:30:07,361 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 03:30:07,363 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 03:30:07,365 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 03:30:07,366 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 03:30:07,371 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 03:30:07,372 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:30:07" (1/1) ... [2024-11-17 03:30:07,372 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a37fd7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:07, skipping insertion in model container [2024-11-17 03:30:07,373 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:30:07" (1/1) ... [2024-11-17 03:30:07,424 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 03:30:07,846 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:30:07,847 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:30:07,848 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:30:07,849 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:30:07,878 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:30:07,928 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) [2024-11-17 03:30:07,928 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@69c02574 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:07, skipping insertion in model container [2024-11-17 03:30:07,929 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 03:30:07,929 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-17 03:30:07,931 INFO L158 Benchmark]: Toolchain (without parser) took 568.13ms. Allocated memory is still 176.2MB. Free memory was 118.0MB in the beginning and 97.5MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-17 03:30:07,932 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 176.2MB. Free memory is still 137.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-17 03:30:07,932 INFO L158 Benchmark]: CACSL2BoogieTranslator took 563.65ms. Allocated memory is still 176.2MB. Free memory was 117.6MB in the beginning and 97.5MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-17 03:30:07,933 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 176.2MB. Free memory is still 137.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 563.65ms. Allocated memory is still 176.2MB. Free memory was 117.6MB in the beginning and 97.5MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1044]: 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/11.0.12-open/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 ../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.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 ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 03:30:10,009 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 03:30:10,096 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-17 03:30:10,101 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 03:30:10,102 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 03:30:10,132 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 03:30:10,133 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 03:30:10,133 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 03:30:10,134 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 03:30:10,134 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 03:30:10,135 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 03:30:10,135 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 03:30:10,136 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 03:30:10,138 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 03:30:10,138 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 03:30:10,139 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 03:30:10,139 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 03:30:10,140 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 03:30:10,140 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 03:30:10,140 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 03:30:10,141 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 03:30:10,145 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 03:30:10,146 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 03:30:10,146 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 03:30:10,146 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 03:30:10,146 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-17 03:30:10,147 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 03:30:10,147 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-17 03:30:10,147 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 03:30:10,147 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 03:30:10,148 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 03:30:10,148 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 03:30:10,148 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 03:30:10,148 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 03:30:10,148 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 03:30:10,149 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:30:10,149 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 03:30:10,149 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 03:30:10,150 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-17 03:30:10,150 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-17 03:30:10,150 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 03:30:10,152 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 03:30:10,152 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 03:30:10,152 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 03:30:10,152 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 [2024-11-17 03:30:10,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 03:30:10,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 03:30:10,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 03:30:10,520 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 03:30:10,521 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 03:30:10,522 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2024-11-17 03:30:12,171 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 03:30:12,429 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 03:30:12,430 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2024-11-17 03:30:12,456 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec956ac63/7b15c4fa16404d31a24ae561a6e765f8/FLAG8bc1246c5 [2024-11-17 03:30:12,474 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec956ac63/7b15c4fa16404d31a24ae561a6e765f8 [2024-11-17 03:30:12,477 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 03:30:12,478 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 03:30:12,480 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 03:30:12,481 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 03:30:12,486 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 03:30:12,487 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:30:12" (1/1) ... [2024-11-17 03:30:12,488 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@101abb3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:12, skipping insertion in model container [2024-11-17 03:30:12,488 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:30:12" (1/1) ... [2024-11-17 03:30:12,550 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 03:30:13,028 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:30:13,029 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:30:13,029 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:30:13,030 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:30:13,061 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:30:13,121 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-17 03:30:13,136 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 03:30:13,173 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:30:13,173 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:30:13,174 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:30:13,174 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:30:13,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:30:13,206 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 03:30:13,244 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:30:13,245 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:30:13,245 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:30:13,246 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:30:13,260 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:30:13,346 INFO L204 MainTranslator]: Completed translation [2024-11-17 03:30:13,347 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:13 WrapperNode [2024-11-17 03:30:13,347 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 03:30:13,348 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 03:30:13,348 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 03:30:13,348 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 03:30:13,355 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:13" (1/1) ... [2024-11-17 03:30:13,383 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:13" (1/1) ... [2024-11-17 03:30:13,431 INFO L138 Inliner]: procedures = 283, calls = 120, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 253 [2024-11-17 03:30:13,432 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 03:30:13,433 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 03:30:13,433 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 03:30:13,433 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 03:30:13,446 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:13" (1/1) ... [2024-11-17 03:30:13,446 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:13" (1/1) ... [2024-11-17 03:30:13,456 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:13" (1/1) ... [2024-11-17 03:30:13,499 INFO L175 MemorySlicer]: Split 96 memory accesses to 4 slices as follows [2, 87, 5, 2]. 91 percent of accesses are in the largest equivalence class. The 77 initializations are split as follows [2, 70, 5, 0]. The 12 writes are split as follows [0, 11, 0, 1]. [2024-11-17 03:30:13,501 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:13" (1/1) ... [2024-11-17 03:30:13,502 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:13" (1/1) ... [2024-11-17 03:30:13,525 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:13" (1/1) ... [2024-11-17 03:30:13,526 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:13" (1/1) ... [2024-11-17 03:30:13,529 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:13" (1/1) ... [2024-11-17 03:30:13,536 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:13" (1/1) ... [2024-11-17 03:30:13,546 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 03:30:13,547 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 03:30:13,547 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 03:30:13,547 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 03:30:13,548 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:13" (1/1) ... [2024-11-17 03:30:13,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:30:13,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:30:13,578 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) [2024-11-17 03:30:13,580 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 [2024-11-17 03:30:13,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-17 03:30:13,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-17 03:30:13,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-17 03:30:13,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2024-11-17 03:30:13,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-17 03:30:13,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-17 03:30:13,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-17 03:30:13,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-17 03:30:13,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-17 03:30:13,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-17 03:30:13,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-17 03:30:13,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-17 03:30:13,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-17 03:30:13,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2024-11-17 03:30:13,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-17 03:30:13,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-17 03:30:13,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-17 03:30:13,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-17 03:30:13,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-17 03:30:13,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-17 03:30:13,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-17 03:30:13,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-11-17 03:30:13,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-11-17 03:30:13,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2024-11-17 03:30:13,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2024-11-17 03:30:13,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2024-11-17 03:30:13,618 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-17 03:30:13,618 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-17 03:30:13,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-17 03:30:13,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 03:30:13,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-17 03:30:13,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-17 03:30:13,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-17 03:30:13,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-17 03:30:13,619 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-17 03:30:13,619 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-17 03:30:13,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 03:30:13,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 03:30:13,621 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 03:30:13,857 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 03:30:13,860 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 03:30:14,544 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L1061: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2024-11-17 03:30:14,544 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L1061-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2024-11-17 03:30:14,710 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 03:30:14,710 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 03:30:16,719 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 03:30:16,719 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 03:30:16,720 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:30:16 BoogieIcfgContainer [2024-11-17 03:30:16,720 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 03:30:16,722 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 03:30:16,722 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 03:30:16,725 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 03:30:16,725 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:30:12" (1/3) ... [2024-11-17 03:30:16,726 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c706223 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:30:16, skipping insertion in model container [2024-11-17 03:30:16,726 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:13" (2/3) ... [2024-11-17 03:30:16,726 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c706223 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:30:16, skipping insertion in model container [2024-11-17 03:30:16,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:30:16" (3/3) ... [2024-11-17 03:30:16,728 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_91-arrayloop2_racefree.i [2024-11-17 03:30:16,745 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 03:30:16,746 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 40 error locations. [2024-11-17 03:30:16,746 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 03:30:16,893 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-17 03:30:16,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 141 transitions, 289 flow [2024-11-17 03:30:17,004 INFO L124 PetriNetUnfolderBase]: 26/159 cut-off events. [2024-11-17 03:30:17,005 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-17 03:30:17,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 159 events. 26/159 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 566 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 96. Up to 4 conditions per place. [2024-11-17 03:30:17,010 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 141 transitions, 289 flow [2024-11-17 03:30:17,017 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 141 transitions, 289 flow [2024-11-17 03:30:17,031 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:30:17,040 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;@13c5da62, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:30:17,041 INFO L334 AbstractCegarLoop]: Starting to check reachability of 56 error locations. [2024-11-17 03:30:17,054 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:30:17,054 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-17 03:30:17,055 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:30:17,056 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:17,057 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:30:17,057 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2024-11-17 03:30:17,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:17,063 INFO L85 PathProgramCache]: Analyzing trace with hash 21536277, now seen corresponding path program 1 times [2024-11-17 03:30:17,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:30:17,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1154123962] [2024-11-17 03:30:17,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:17,079 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 [2024-11-17 03:30:17,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:30:17,083 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) [2024-11-17 03:30:17,106 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 [2024-11-17 03:30:17,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:30:17,335 INFO L255 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 03:30:17,340 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:30:17,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:17,423 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:30:17,424 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:30:17,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1154123962] [2024-11-17 03:30:17,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1154123962] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:30:17,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:30:17,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:30:17,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989819524] [2024-11-17 03:30:17,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:30:17,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:30:17,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:30:17,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:30:17,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:30:17,746 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 141 [2024-11-17 03:30:17,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 141 transitions, 289 flow. Second operand has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 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) [2024-11-17 03:30:17,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:30:17,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 141 [2024-11-17 03:30:17,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:30:18,198 INFO L124 PetriNetUnfolderBase]: 120/485 cut-off events. [2024-11-17 03:30:18,198 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-17 03:30:18,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 750 conditions, 485 events. 120/485 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2708 event pairs, 61 based on Foata normal form. 131/552 useless extension candidates. Maximal degree in co-relation 668. Up to 167 conditions per place. [2024-11-17 03:30:18,204 INFO L140 encePairwiseOnDemand]: 116/141 looper letters, 61 selfloop transitions, 4 changer transitions 0/142 dead transitions. [2024-11-17 03:30:18,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 142 transitions, 421 flow [2024-11-17 03:30:18,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:30:18,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:30:18,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 408 transitions. [2024-11-17 03:30:18,221 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.723404255319149 [2024-11-17 03:30:18,224 INFO L175 Difference]: Start difference. First operand has 120 places, 141 transitions, 289 flow. Second operand 4 states and 408 transitions. [2024-11-17 03:30:18,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 142 transitions, 421 flow [2024-11-17 03:30:18,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 142 transitions, 421 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:30:18,233 INFO L231 Difference]: Finished difference. Result has 121 places, 120 transitions, 261 flow [2024-11-17 03:30:18,235 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=261, PETRI_PLACES=121, PETRI_TRANSITIONS=120} [2024-11-17 03:30:18,239 INFO L277 CegarLoopForPetriNet]: 120 programPoint places, 1 predicate places. [2024-11-17 03:30:18,239 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 120 transitions, 261 flow [2024-11-17 03:30:18,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 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) [2024-11-17 03:30:18,240 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:18,240 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:30:18,246 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 (2)] Forceful destruction successful, exit code 0 [2024-11-17 03:30:18,441 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 [2024-11-17 03:30:18,442 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2024-11-17 03:30:18,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:18,442 INFO L85 PathProgramCache]: Analyzing trace with hash 21536278, now seen corresponding path program 1 times [2024-11-17 03:30:18,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:30:18,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2025433202] [2024-11-17 03:30:18,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:18,444 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 [2024-11-17 03:30:18,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:30:18,446 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) [2024-11-17 03:30:18,447 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 [2024-11-17 03:30:18,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:30:18,598 INFO L255 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-17 03:30:18,599 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:30:18,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:18,676 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:30:18,676 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:30:18,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2025433202] [2024-11-17 03:30:18,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2025433202] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:30:18,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:30:18,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:30:18,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978184029] [2024-11-17 03:30:18,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:30:18,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:30:18,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:30:18,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:30:18,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:30:18,990 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 141 [2024-11-17 03:30:18,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 120 transitions, 261 flow. Second operand has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 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) [2024-11-17 03:30:18,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:30:18,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 141 [2024-11-17 03:30:18,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:30:19,353 INFO L124 PetriNetUnfolderBase]: 122/528 cut-off events. [2024-11-17 03:30:19,353 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-11-17 03:30:19,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 851 conditions, 528 events. 122/528 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2867 event pairs, 100 based on Foata normal form. 3/449 useless extension candidates. Maximal degree in co-relation 743. Up to 261 conditions per place. [2024-11-17 03:30:19,358 INFO L140 encePairwiseOnDemand]: 133/141 looper letters, 44 selfloop transitions, 5 changer transitions 0/124 dead transitions. [2024-11-17 03:30:19,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 124 transitions, 373 flow [2024-11-17 03:30:19,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:30:19,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:30:19,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 360 transitions. [2024-11-17 03:30:19,364 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6382978723404256 [2024-11-17 03:30:19,364 INFO L175 Difference]: Start difference. First operand has 121 places, 120 transitions, 261 flow. Second operand 4 states and 360 transitions. [2024-11-17 03:30:19,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 124 transitions, 373 flow [2024-11-17 03:30:19,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 124 transitions, 361 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 03:30:19,369 INFO L231 Difference]: Finished difference. Result has 123 places, 124 transitions, 294 flow [2024-11-17 03:30:19,369 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=294, PETRI_PLACES=123, PETRI_TRANSITIONS=124} [2024-11-17 03:30:19,370 INFO L277 CegarLoopForPetriNet]: 120 programPoint places, 3 predicate places. [2024-11-17 03:30:19,370 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 124 transitions, 294 flow [2024-11-17 03:30:19,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 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) [2024-11-17 03:30:19,371 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:19,371 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:30:19,377 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 [2024-11-17 03:30:19,575 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 [2024-11-17 03:30:19,576 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2024-11-17 03:30:19,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:19,577 INFO L85 PathProgramCache]: Analyzing trace with hash -769547062, now seen corresponding path program 1 times [2024-11-17 03:30:19,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:30:19,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2141755037] [2024-11-17 03:30:19,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:19,578 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 [2024-11-17 03:30:19,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:30:19,581 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) [2024-11-17 03:30:19,582 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 [2024-11-17 03:30:19,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:30:19,769 INFO L255 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-17 03:30:19,771 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:30:19,805 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 [2024-11-17 03:30:19,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:19,813 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:30:19,813 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:30:19,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2141755037] [2024-11-17 03:30:19,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2141755037] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:30:19,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:30:19,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:30:19,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273469779] [2024-11-17 03:30:19,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:30:19,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:30:19,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:30:19,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:30:19,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:30:19,910 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 141 [2024-11-17 03:30:19,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 124 transitions, 294 flow. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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) [2024-11-17 03:30:19,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:30:19,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 141 [2024-11-17 03:30:19,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:30:20,121 INFO L124 PetriNetUnfolderBase]: 122/527 cut-off events. [2024-11-17 03:30:20,122 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-17 03:30:20,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 836 conditions, 527 events. 122/527 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2861 event pairs, 100 based on Foata normal form. 0/445 useless extension candidates. Maximal degree in co-relation 800. Up to 256 conditions per place. [2024-11-17 03:30:20,128 INFO L140 encePairwiseOnDemand]: 138/141 looper letters, 41 selfloop transitions, 3 changer transitions 0/123 dead transitions. [2024-11-17 03:30:20,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 123 transitions, 380 flow [2024-11-17 03:30:20,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:30:20,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:30:20,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 284 transitions. [2024-11-17 03:30:20,133 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6713947990543735 [2024-11-17 03:30:20,133 INFO L175 Difference]: Start difference. First operand has 123 places, 124 transitions, 294 flow. Second operand 3 states and 284 transitions. [2024-11-17 03:30:20,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 123 transitions, 380 flow [2024-11-17 03:30:20,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 123 transitions, 377 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:30:20,139 INFO L231 Difference]: Finished difference. Result has 123 places, 123 transitions, 295 flow [2024-11-17 03:30:20,140 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=295, PETRI_PLACES=123, PETRI_TRANSITIONS=123} [2024-11-17 03:30:20,140 INFO L277 CegarLoopForPetriNet]: 120 programPoint places, 3 predicate places. [2024-11-17 03:30:20,141 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 123 transitions, 295 flow [2024-11-17 03:30:20,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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) [2024-11-17 03:30:20,142 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:20,142 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:30:20,150 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-11-17 03:30:20,346 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 [2024-11-17 03:30:20,347 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2024-11-17 03:30:20,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:20,348 INFO L85 PathProgramCache]: Analyzing trace with hash -769547061, now seen corresponding path program 1 times [2024-11-17 03:30:20,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:30:20,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1916719508] [2024-11-17 03:30:20,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:20,349 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:30:20,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:30:20,352 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) [2024-11-17 03:30:20,354 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 [2024-11-17 03:30:20,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:30:20,507 INFO L255 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 03:30:20,509 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:30:20,517 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 [2024-11-17 03:30:20,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:20,527 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:30:20,528 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:30:20,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1916719508] [2024-11-17 03:30:20,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1916719508] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:30:20,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:30:20,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:30:20,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714986200] [2024-11-17 03:30:20,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:30:20,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:30:20,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:30:20,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:30:20,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:30:20,656 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 141 [2024-11-17 03:30:20,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 123 transitions, 295 flow. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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) [2024-11-17 03:30:20,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:30:20,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 141 [2024-11-17 03:30:20,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:30:20,879 INFO L124 PetriNetUnfolderBase]: 122/526 cut-off events. [2024-11-17 03:30:20,879 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-11-17 03:30:20,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 836 conditions, 526 events. 122/526 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2858 event pairs, 100 based on Foata normal form. 0/444 useless extension candidates. Maximal degree in co-relation 799. Up to 256 conditions per place. [2024-11-17 03:30:20,884 INFO L140 encePairwiseOnDemand]: 138/141 looper letters, 41 selfloop transitions, 3 changer transitions 0/122 dead transitions. [2024-11-17 03:30:20,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 122 transitions, 381 flow [2024-11-17 03:30:20,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:30:20,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:30:20,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 284 transitions. [2024-11-17 03:30:20,885 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6713947990543735 [2024-11-17 03:30:20,885 INFO L175 Difference]: Start difference. First operand has 123 places, 123 transitions, 295 flow. Second operand 3 states and 284 transitions. [2024-11-17 03:30:20,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 122 transitions, 381 flow [2024-11-17 03:30:20,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 122 transitions, 375 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:30:20,892 INFO L231 Difference]: Finished difference. Result has 122 places, 122 transitions, 293 flow [2024-11-17 03:30:20,893 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=293, PETRI_PLACES=122, PETRI_TRANSITIONS=122} [2024-11-17 03:30:20,893 INFO L277 CegarLoopForPetriNet]: 120 programPoint places, 2 predicate places. [2024-11-17 03:30:20,893 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 122 transitions, 293 flow [2024-11-17 03:30:20,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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) [2024-11-17 03:30:20,894 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:20,894 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:30:20,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2024-11-17 03:30:21,097 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 [2024-11-17 03:30:21,098 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2024-11-17 03:30:21,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:21,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1913845560, now seen corresponding path program 1 times [2024-11-17 03:30:21,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:30:21,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1963164053] [2024-11-17 03:30:21,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:21,099 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 [2024-11-17 03:30:21,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:30:21,100 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) [2024-11-17 03:30:21,101 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 [2024-11-17 03:30:21,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:30:21,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 03:30:21,283 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:30:21,287 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 [2024-11-17 03:30:21,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:21,303 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:30:21,303 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:30:21,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1963164053] [2024-11-17 03:30:21,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1963164053] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:30:21,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:30:21,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:30:21,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440239203] [2024-11-17 03:30:21,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:30:21,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:30:21,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:30:21,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:30:21,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:30:21,444 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 141 [2024-11-17 03:30:21,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 122 transitions, 293 flow. Second operand has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 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) [2024-11-17 03:30:21,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:30:21,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 141 [2024-11-17 03:30:21,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:30:21,691 INFO L124 PetriNetUnfolderBase]: 122/524 cut-off events. [2024-11-17 03:30:21,692 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-17 03:30:21,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 837 conditions, 524 events. 122/524 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2853 event pairs, 100 based on Foata normal form. 1/446 useless extension candidates. Maximal degree in co-relation 799. Up to 256 conditions per place. [2024-11-17 03:30:21,695 INFO L140 encePairwiseOnDemand]: 134/141 looper letters, 39 selfloop transitions, 7 changer transitions 0/120 dead transitions. [2024-11-17 03:30:21,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 120 transitions, 381 flow [2024-11-17 03:30:21,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 03:30:21,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 03:30:21,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 419 transitions. [2024-11-17 03:30:21,697 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5943262411347517 [2024-11-17 03:30:21,697 INFO L175 Difference]: Start difference. First operand has 122 places, 122 transitions, 293 flow. Second operand 5 states and 419 transitions. [2024-11-17 03:30:21,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 120 transitions, 381 flow [2024-11-17 03:30:21,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 120 transitions, 375 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:30:21,701 INFO L231 Difference]: Finished difference. Result has 122 places, 120 transitions, 297 flow [2024-11-17 03:30:21,701 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=297, PETRI_PLACES=122, PETRI_TRANSITIONS=120} [2024-11-17 03:30:21,702 INFO L277 CegarLoopForPetriNet]: 120 programPoint places, 2 predicate places. [2024-11-17 03:30:21,702 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 120 transitions, 297 flow [2024-11-17 03:30:21,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 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) [2024-11-17 03:30:21,702 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:21,702 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:30:21,710 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 [2024-11-17 03:30:21,903 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 [2024-11-17 03:30:21,903 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2024-11-17 03:30:21,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:21,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1913845561, now seen corresponding path program 1 times [2024-11-17 03:30:21,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:30:21,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [870188267] [2024-11-17 03:30:21,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:21,905 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 [2024-11-17 03:30:21,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:30:21,908 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) [2024-11-17 03:30:21,909 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 [2024-11-17 03:30:22,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:30:22,077 INFO L255 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-17 03:30:22,078 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:30:22,086 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 [2024-11-17 03:30:22,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:22,111 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:30:22,111 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:30:22,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [870188267] [2024-11-17 03:30:22,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [870188267] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:30:22,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:30:22,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:30:22,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111801494] [2024-11-17 03:30:22,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:30:22,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:30:22,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:30:22,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:30:22,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:30:22,344 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 141 [2024-11-17 03:30:22,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 120 transitions, 297 flow. Second operand has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 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) [2024-11-17 03:30:22,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:30:22,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 141 [2024-11-17 03:30:22,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:30:22,601 INFO L124 PetriNetUnfolderBase]: 122/522 cut-off events. [2024-11-17 03:30:22,601 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-11-17 03:30:22,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 839 conditions, 522 events. 122/522 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2844 event pairs, 100 based on Foata normal form. 2/445 useless extension candidates. Maximal degree in co-relation 797. Up to 258 conditions per place. [2024-11-17 03:30:22,604 INFO L140 encePairwiseOnDemand]: 136/141 looper letters, 42 selfloop transitions, 4 changer transitions 0/118 dead transitions. [2024-11-17 03:30:22,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 118 transitions, 385 flow [2024-11-17 03:30:22,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:30:22,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:30:22,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 352 transitions. [2024-11-17 03:30:22,606 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.624113475177305 [2024-11-17 03:30:22,606 INFO L175 Difference]: Start difference. First operand has 122 places, 120 transitions, 297 flow. Second operand 4 states and 352 transitions. [2024-11-17 03:30:22,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 118 transitions, 385 flow [2024-11-17 03:30:22,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 118 transitions, 371 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-17 03:30:22,609 INFO L231 Difference]: Finished difference. Result has 119 places, 118 transitions, 287 flow [2024-11-17 03:30:22,609 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=287, PETRI_PLACES=119, PETRI_TRANSITIONS=118} [2024-11-17 03:30:22,610 INFO L277 CegarLoopForPetriNet]: 120 programPoint places, -1 predicate places. [2024-11-17 03:30:22,610 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 118 transitions, 287 flow [2024-11-17 03:30:22,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 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) [2024-11-17 03:30:22,611 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:22,611 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:30:22,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2024-11-17 03:30:22,814 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 [2024-11-17 03:30:22,815 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2024-11-17 03:30:22,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:22,816 INFO L85 PathProgramCache]: Analyzing trace with hash 961133716, now seen corresponding path program 1 times [2024-11-17 03:30:22,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:30:22,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2024542362] [2024-11-17 03:30:22,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:22,817 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 [2024-11-17 03:30:22,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:30:22,820 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) [2024-11-17 03:30:22,821 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 [2024-11-17 03:30:22,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:30:22,955 INFO L255 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-17 03:30:22,956 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:30:22,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:22,964 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:30:22,964 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:30:22,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2024542362] [2024-11-17 03:30:22,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2024542362] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:30:22,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:30:22,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:30:22,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250529460] [2024-11-17 03:30:22,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:30:22,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:30:22,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:30:22,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:30:22,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:30:22,966 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 141 [2024-11-17 03:30:22,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 118 transitions, 287 flow. Second operand has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 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) [2024-11-17 03:30:22,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:30:22,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 141 [2024-11-17 03:30:22,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:30:23,188 INFO L124 PetriNetUnfolderBase]: 121/540 cut-off events. [2024-11-17 03:30:23,188 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-17 03:30:23,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 859 conditions, 540 events. 121/540 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2864 event pairs, 100 based on Foata normal form. 2/455 useless extension candidates. Maximal degree in co-relation 826. Up to 257 conditions per place. [2024-11-17 03:30:23,191 INFO L140 encePairwiseOnDemand]: 138/141 looper letters, 46 selfloop transitions, 3 changer transitions 0/122 dead transitions. [2024-11-17 03:30:23,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 122 transitions, 399 flow [2024-11-17 03:30:23,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:30:23,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:30:23,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 290 transitions. [2024-11-17 03:30:23,193 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6855791962174941 [2024-11-17 03:30:23,193 INFO L175 Difference]: Start difference. First operand has 119 places, 118 transitions, 287 flow. Second operand 3 states and 290 transitions. [2024-11-17 03:30:23,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 122 transitions, 399 flow [2024-11-17 03:30:23,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 122 transitions, 383 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-17 03:30:23,198 INFO L231 Difference]: Finished difference. Result has 119 places, 118 transitions, 288 flow [2024-11-17 03:30:23,199 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=288, PETRI_PLACES=119, PETRI_TRANSITIONS=118} [2024-11-17 03:30:23,199 INFO L277 CegarLoopForPetriNet]: 120 programPoint places, -1 predicate places. [2024-11-17 03:30:23,200 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 118 transitions, 288 flow [2024-11-17 03:30:23,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 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) [2024-11-17 03:30:23,200 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:23,200 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:30:23,206 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 (8)] Forceful destruction successful, exit code 0 [2024-11-17 03:30:23,401 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 [2024-11-17 03:30:23,401 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2024-11-17 03:30:23,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:23,402 INFO L85 PathProgramCache]: Analyzing trace with hash 959600410, now seen corresponding path program 1 times [2024-11-17 03:30:23,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:30:23,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1974223109] [2024-11-17 03:30:23,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:23,402 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 [2024-11-17 03:30:23,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:30:23,404 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) [2024-11-17 03:30:23,405 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 [2024-11-17 03:30:23,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:30:23,904 INFO L255 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-17 03:30:23,905 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:30:23,966 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-17 03:30:23,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-11-17 03:30:24,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:24,007 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:30:24,007 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:30:24,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1974223109] [2024-11-17 03:30:24,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1974223109] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:30:24,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:30:24,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:30:24,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040678113] [2024-11-17 03:30:24,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:30:24,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:30:24,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:30:24,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:30:24,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:30:24,198 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 141 [2024-11-17 03:30:24,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 118 transitions, 288 flow. Second operand has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 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) [2024-11-17 03:30:24,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:30:24,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 141 [2024-11-17 03:30:24,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:30:24,504 INFO L124 PetriNetUnfolderBase]: 120/501 cut-off events. [2024-11-17 03:30:24,505 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-11-17 03:30:24,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 822 conditions, 501 events. 120/501 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2599 event pairs, 61 based on Foata normal form. 2/441 useless extension candidates. Maximal degree in co-relation 787. Up to 170 conditions per place. [2024-11-17 03:30:24,508 INFO L140 encePairwiseOnDemand]: 135/141 looper letters, 62 selfloop transitions, 5 changer transitions 0/138 dead transitions. [2024-11-17 03:30:24,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 138 transitions, 462 flow [2024-11-17 03:30:24,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:30:24,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:30:24,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 381 transitions. [2024-11-17 03:30:24,509 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.675531914893617 [2024-11-17 03:30:24,509 INFO L175 Difference]: Start difference. First operand has 119 places, 118 transitions, 288 flow. Second operand 4 states and 381 transitions. [2024-11-17 03:30:24,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 138 transitions, 462 flow [2024-11-17 03:30:24,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 138 transitions, 459 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:30:24,512 INFO L231 Difference]: Finished difference. Result has 119 places, 116 transitions, 291 flow [2024-11-17 03:30:24,513 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=291, PETRI_PLACES=119, PETRI_TRANSITIONS=116} [2024-11-17 03:30:24,513 INFO L277 CegarLoopForPetriNet]: 120 programPoint places, -1 predicate places. [2024-11-17 03:30:24,513 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 116 transitions, 291 flow [2024-11-17 03:30:24,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 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) [2024-11-17 03:30:24,514 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:24,514 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:30:24,522 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 (9)] Forceful destruction successful, exit code 0 [2024-11-17 03:30:24,714 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 [2024-11-17 03:30:24,714 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2024-11-17 03:30:24,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:24,715 INFO L85 PathProgramCache]: Analyzing trace with hash 959600411, now seen corresponding path program 1 times [2024-11-17 03:30:24,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:30:24,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1673179757] [2024-11-17 03:30:24,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:24,716 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 [2024-11-17 03:30:24,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:30:24,717 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) [2024-11-17 03:30:24,719 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 [2024-11-17 03:30:25,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:30:25,225 INFO L255 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-17 03:30:25,227 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:30:25,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 03:30:25,344 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 [2024-11-17 03:30:25,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:25,403 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:30:25,403 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:30:25,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1673179757] [2024-11-17 03:30:25,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1673179757] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:30:25,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:30:25,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:30:25,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908278910] [2024-11-17 03:30:25,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:30:25,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 03:30:25,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:30:25,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 03:30:25,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-17 03:30:25,711 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 141 [2024-11-17 03:30:25,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 116 transitions, 291 flow. Second operand has 5 states, 5 states have (on average 79.4) internal successors, (397), 5 states have internal predecessors, (397), 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) [2024-11-17 03:30:25,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:30:25,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 141 [2024-11-17 03:30:25,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:30:26,047 INFO L124 PetriNetUnfolderBase]: 123/570 cut-off events. [2024-11-17 03:30:26,047 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2024-11-17 03:30:26,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 940 conditions, 570 events. 123/570 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3133 event pairs, 101 based on Foata normal form. 2/473 useless extension candidates. Maximal degree in co-relation 846. Up to 268 conditions per place. [2024-11-17 03:30:26,051 INFO L140 encePairwiseOnDemand]: 135/141 looper letters, 50 selfloop transitions, 5 changer transitions 0/123 dead transitions. [2024-11-17 03:30:26,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 123 transitions, 427 flow [2024-11-17 03:30:26,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:30:26,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:30:26,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 366 transitions. [2024-11-17 03:30:26,053 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.648936170212766 [2024-11-17 03:30:26,053 INFO L175 Difference]: Start difference. First operand has 119 places, 116 transitions, 291 flow. Second operand 4 states and 366 transitions. [2024-11-17 03:30:26,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 123 transitions, 427 flow [2024-11-17 03:30:26,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 123 transitions, 411 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 03:30:26,056 INFO L231 Difference]: Finished difference. Result has 121 places, 120 transitions, 323 flow [2024-11-17 03:30:26,056 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=323, PETRI_PLACES=121, PETRI_TRANSITIONS=120} [2024-11-17 03:30:26,057 INFO L277 CegarLoopForPetriNet]: 120 programPoint places, 1 predicate places. [2024-11-17 03:30:26,057 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 120 transitions, 323 flow [2024-11-17 03:30:26,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.4) internal successors, (397), 5 states have internal predecessors, (397), 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) [2024-11-17 03:30:26,058 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:26,058 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:30:26,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2024-11-17 03:30:26,258 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 [2024-11-17 03:30:26,259 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2024-11-17 03:30:26,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:26,259 INFO L85 PathProgramCache]: Analyzing trace with hash -317157652, now seen corresponding path program 1 times [2024-11-17 03:30:26,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:30:26,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2145615075] [2024-11-17 03:30:26,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:26,260 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 [2024-11-17 03:30:26,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:30:26,261 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) [2024-11-17 03:30:26,262 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 [2024-11-17 03:30:26,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:30:26,912 INFO L255 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-17 03:30:26,916 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:30:27,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-17 03:30:27,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-17 03:30:27,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-17 03:30:27,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-17 03:30:27,178 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-17 03:30:27,179 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 [2024-11-17 03:30:27,193 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 [2024-11-17 03:30:27,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-17 03:30:27,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-17 03:30:27,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-17 03:30:27,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-17 03:30:27,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-17 03:30:27,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-17 03:30:27,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:27,408 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:30:27,408 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:30:27,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2145615075] [2024-11-17 03:30:27,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2145615075] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:30:27,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:30:27,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-17 03:30:27,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705466690] [2024-11-17 03:30:27,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:30:27,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-17 03:30:27,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:30:27,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-17 03:30:27,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-17 03:30:28,516 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 141 [2024-11-17 03:30:28,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 120 transitions, 323 flow. Second operand has 10 states, 10 states have (on average 64.0) internal successors, (640), 10 states have internal predecessors, (640), 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) [2024-11-17 03:30:28,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:30:28,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 141 [2024-11-17 03:30:28,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:30:29,103 INFO L124 PetriNetUnfolderBase]: 123/569 cut-off events. [2024-11-17 03:30:29,103 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-11-17 03:30:29,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 953 conditions, 569 events. 123/569 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3121 event pairs, 101 based on Foata normal form. 0/485 useless extension candidates. Maximal degree in co-relation 858. Up to 281 conditions per place. [2024-11-17 03:30:29,107 INFO L140 encePairwiseOnDemand]: 130/141 looper letters, 66 selfloop transitions, 10 changer transitions 0/136 dead transitions. [2024-11-17 03:30:29,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 136 transitions, 513 flow [2024-11-17 03:30:29,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 03:30:29,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-17 03:30:29,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 706 transitions. [2024-11-17 03:30:29,109 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.500709219858156 [2024-11-17 03:30:29,110 INFO L175 Difference]: Start difference. First operand has 121 places, 120 transitions, 323 flow. Second operand 10 states and 706 transitions. [2024-11-17 03:30:29,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 136 transitions, 513 flow [2024-11-17 03:30:29,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 136 transitions, 511 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:30:29,114 INFO L231 Difference]: Finished difference. Result has 134 places, 124 transitions, 373 flow [2024-11-17 03:30:29,114 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=373, PETRI_PLACES=134, PETRI_TRANSITIONS=124} [2024-11-17 03:30:29,115 INFO L277 CegarLoopForPetriNet]: 120 programPoint places, 14 predicate places. [2024-11-17 03:30:29,115 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 124 transitions, 373 flow [2024-11-17 03:30:29,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 64.0) internal successors, (640), 10 states have internal predecessors, (640), 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) [2024-11-17 03:30:29,116 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:29,116 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:30:29,125 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 (11)] Forceful destruction successful, exit code 0 [2024-11-17 03:30:29,316 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 [2024-11-17 03:30:29,317 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2024-11-17 03:30:29,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:29,317 INFO L85 PathProgramCache]: Analyzing trace with hash -317157653, now seen corresponding path program 1 times [2024-11-17 03:30:29,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:30:29,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1783510506] [2024-11-17 03:30:29,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:29,318 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 [2024-11-17 03:30:29,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:30:29,319 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) [2024-11-17 03:30:29,320 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 [2024-11-17 03:30:29,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:30:29,942 INFO L255 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-17 03:30:29,945 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:30:30,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-17 03:30:30,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 15 [2024-11-17 03:30:30,146 INFO L349 Elim1Store]: treesize reduction 17, result has 19.0 percent of original size [2024-11-17 03:30:30,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 16 [2024-11-17 03:30:30,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-17 03:30:30,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-17 03:30:30,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-17 03:30:30,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:30,293 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:30:30,293 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:30:30,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1783510506] [2024-11-17 03:30:30,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1783510506] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:30:30,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:30:30,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-17 03:30:30,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415112691] [2024-11-17 03:30:30,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:30:30,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-17 03:30:30,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:30:30,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-17 03:30:30,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-17 03:30:31,349 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 141 [2024-11-17 03:30:31,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 124 transitions, 373 flow. Second operand has 10 states, 10 states have (on average 71.0) internal successors, (710), 10 states have internal predecessors, (710), 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) [2024-11-17 03:30:31,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:30:31,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 141 [2024-11-17 03:30:31,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:30:32,174 INFO L124 PetriNetUnfolderBase]: 121/530 cut-off events. [2024-11-17 03:30:32,174 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2024-11-17 03:30:32,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 936 conditions, 530 events. 121/530 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2870 event pairs, 61 based on Foata normal form. 0/470 useless extension candidates. Maximal degree in co-relation 855. Up to 182 conditions per place. [2024-11-17 03:30:32,177 INFO L140 encePairwiseOnDemand]: 129/141 looper letters, 70 selfloop transitions, 19 changer transitions 0/154 dead transitions. [2024-11-17 03:30:32,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 154 transitions, 619 flow [2024-11-17 03:30:32,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-17 03:30:32,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-17 03:30:32,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 849 transitions. [2024-11-17 03:30:32,180 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5473887814313346 [2024-11-17 03:30:32,180 INFO L175 Difference]: Start difference. First operand has 134 places, 124 transitions, 373 flow. Second operand 11 states and 849 transitions. [2024-11-17 03:30:32,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 154 transitions, 619 flow [2024-11-17 03:30:32,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 154 transitions, 615 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:30:32,184 INFO L231 Difference]: Finished difference. Result has 147 places, 129 transitions, 456 flow [2024-11-17 03:30:32,184 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=456, PETRI_PLACES=147, PETRI_TRANSITIONS=129} [2024-11-17 03:30:32,185 INFO L277 CegarLoopForPetriNet]: 120 programPoint places, 27 predicate places. [2024-11-17 03:30:32,185 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 129 transitions, 456 flow [2024-11-17 03:30:32,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 71.0) internal successors, (710), 10 states have internal predecessors, (710), 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) [2024-11-17 03:30:32,186 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:32,186 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:30:32,194 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 [2024-11-17 03:30:32,386 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 [2024-11-17 03:30:32,387 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2024-11-17 03:30:32,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:32,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1241952026, now seen corresponding path program 1 times [2024-11-17 03:30:32,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:30:32,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2145106164] [2024-11-17 03:30:32,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:32,388 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 [2024-11-17 03:30:32,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:30:32,389 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) [2024-11-17 03:30:32,390 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 [2024-11-17 03:30:32,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:30:32,562 INFO L255 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-17 03:30:32,564 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:30:32,568 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 [2024-11-17 03:30:32,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:32,585 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:30:32,585 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:30:32,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2145106164] [2024-11-17 03:30:32,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2145106164] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:30:32,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:30:32,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:30:32,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135874689] [2024-11-17 03:30:32,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:30:32,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:30:32,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:30:32,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:30:32,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:30:32,721 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 141 [2024-11-17 03:30:32,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 129 transitions, 456 flow. Second operand has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 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) [2024-11-17 03:30:32,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:30:32,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 141 [2024-11-17 03:30:32,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:30:32,995 INFO L124 PetriNetUnfolderBase]: 122/557 cut-off events. [2024-11-17 03:30:32,995 INFO L125 PetriNetUnfolderBase]: For 154/154 co-relation queries the response was YES. [2024-11-17 03:30:32,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1012 conditions, 557 events. 122/557 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3049 event pairs, 100 based on Foata normal form. 0/484 useless extension candidates. Maximal degree in co-relation 920. Up to 257 conditions per place. [2024-11-17 03:30:32,998 INFO L140 encePairwiseOnDemand]: 136/141 looper letters, 46 selfloop transitions, 11 changer transitions 0/127 dead transitions. [2024-11-17 03:30:32,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 127 transitions, 566 flow [2024-11-17 03:30:32,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:30:32,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:30:33,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 352 transitions. [2024-11-17 03:30:33,000 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.624113475177305 [2024-11-17 03:30:33,000 INFO L175 Difference]: Start difference. First operand has 147 places, 129 transitions, 456 flow. Second operand 4 states and 352 transitions. [2024-11-17 03:30:33,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 127 transitions, 566 flow [2024-11-17 03:30:33,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 127 transitions, 542 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-17 03:30:33,004 INFO L231 Difference]: Finished difference. Result has 143 places, 127 transitions, 450 flow [2024-11-17 03:30:33,004 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=450, PETRI_PLACES=143, PETRI_TRANSITIONS=127} [2024-11-17 03:30:33,005 INFO L277 CegarLoopForPetriNet]: 120 programPoint places, 23 predicate places. [2024-11-17 03:30:33,005 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 127 transitions, 450 flow [2024-11-17 03:30:33,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 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) [2024-11-17 03:30:33,006 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:33,006 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:30:33,013 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 (13)] Ended with exit code 0 [2024-11-17 03:30:33,206 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 [2024-11-17 03:30:33,207 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2024-11-17 03:30:33,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:33,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1241952025, now seen corresponding path program 1 times [2024-11-17 03:30:33,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:30:33,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [530875280] [2024-11-17 03:30:33,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:33,208 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 [2024-11-17 03:30:33,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:30:33,209 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) [2024-11-17 03:30:33,210 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 [2024-11-17 03:30:33,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:30:33,373 INFO L255 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-17 03:30:33,374 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:30:33,379 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 [2024-11-17 03:30:33,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:33,408 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:30:33,408 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:30:33,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [530875280] [2024-11-17 03:30:33,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [530875280] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:30:33,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:30:33,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:30:33,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489073741] [2024-11-17 03:30:33,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:30:33,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:30:33,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:30:33,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:30:33,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:30:33,544 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 141 [2024-11-17 03:30:33,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 127 transitions, 450 flow. Second operand has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 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) [2024-11-17 03:30:33,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:30:33,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 141 [2024-11-17 03:30:33,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:30:33,766 INFO L124 PetriNetUnfolderBase]: 122/549 cut-off events. [2024-11-17 03:30:33,767 INFO L125 PetriNetUnfolderBase]: For 175/175 co-relation queries the response was YES. [2024-11-17 03:30:33,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 973 conditions, 549 events. 122/549 cut-off events. For 175/175 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2997 event pairs, 100 based on Foata normal form. 8/484 useless extension candidates. Maximal degree in co-relation 886. Up to 257 conditions per place. [2024-11-17 03:30:33,770 INFO L140 encePairwiseOnDemand]: 136/141 looper letters, 44 selfloop transitions, 11 changer transitions 0/125 dead transitions. [2024-11-17 03:30:33,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 125 transitions, 556 flow [2024-11-17 03:30:33,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:30:33,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:30:33,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 358 transitions. [2024-11-17 03:30:33,773 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6347517730496454 [2024-11-17 03:30:33,773 INFO L175 Difference]: Start difference. First operand has 143 places, 127 transitions, 450 flow. Second operand 4 states and 358 transitions. [2024-11-17 03:30:33,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 125 transitions, 556 flow [2024-11-17 03:30:33,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 125 transitions, 534 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 03:30:33,777 INFO L231 Difference]: Finished difference. Result has 141 places, 125 transitions, 446 flow [2024-11-17 03:30:33,777 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=446, PETRI_PLACES=141, PETRI_TRANSITIONS=125} [2024-11-17 03:30:33,779 INFO L277 CegarLoopForPetriNet]: 120 programPoint places, 21 predicate places. [2024-11-17 03:30:33,779 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 125 transitions, 446 flow [2024-11-17 03:30:33,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 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) [2024-11-17 03:30:33,779 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:33,780 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:30:33,787 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 [2024-11-17 03:30:33,980 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 [2024-11-17 03:30:33,980 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2024-11-17 03:30:33,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:33,981 INFO L85 PathProgramCache]: Analyzing trace with hash -484954132, now seen corresponding path program 1 times [2024-11-17 03:30:33,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:30:33,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [262348025] [2024-11-17 03:30:33,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:33,981 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 [2024-11-17 03:30:33,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:30:33,982 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) [2024-11-17 03:30:33,984 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 [2024-11-17 03:30:34,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:30:34,169 INFO L255 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-17 03:30:34,171 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:30:34,190 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:34,190 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:30:34,224 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:34,224 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:30:34,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [262348025] [2024-11-17 03:30:34,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [262348025] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:30:34,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 03:30:34,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-11-17 03:30:34,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572356088] [2024-11-17 03:30:34,224 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 03:30:34,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 03:30:34,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:30:34,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 03:30:34,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-17 03:30:34,225 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 141 [2024-11-17 03:30:34,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 125 transitions, 446 flow. Second operand has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 states have internal predecessors, (504), 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) [2024-11-17 03:30:34,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:30:34,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 141 [2024-11-17 03:30:34,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:30:34,568 INFO L124 PetriNetUnfolderBase]: 122/605 cut-off events. [2024-11-17 03:30:34,568 INFO L125 PetriNetUnfolderBase]: For 280/280 co-relation queries the response was YES. [2024-11-17 03:30:34,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1123 conditions, 605 events. 122/605 cut-off events. For 280/280 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3161 event pairs, 100 based on Foata normal form. 6/534 useless extension candidates. Maximal degree in co-relation 1026. Up to 255 conditions per place. [2024-11-17 03:30:34,572 INFO L140 encePairwiseOnDemand]: 137/141 looper letters, 60 selfloop transitions, 11 changer transitions 0/140 dead transitions. [2024-11-17 03:30:34,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 140 transitions, 700 flow [2024-11-17 03:30:34,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 03:30:34,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 03:30:34,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 546 transitions. [2024-11-17 03:30:34,574 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6453900709219859 [2024-11-17 03:30:34,574 INFO L175 Difference]: Start difference. First operand has 141 places, 125 transitions, 446 flow. Second operand 6 states and 546 transitions. [2024-11-17 03:30:34,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 140 transitions, 700 flow [2024-11-17 03:30:34,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 140 transitions, 656 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 03:30:34,578 INFO L231 Difference]: Finished difference. Result has 147 places, 130 transitions, 506 flow [2024-11-17 03:30:34,579 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=506, PETRI_PLACES=147, PETRI_TRANSITIONS=130} [2024-11-17 03:30:34,579 INFO L277 CegarLoopForPetriNet]: 120 programPoint places, 27 predicate places. [2024-11-17 03:30:34,579 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 130 transitions, 506 flow [2024-11-17 03:30:34,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 states have internal predecessors, (504), 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) [2024-11-17 03:30:34,580 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:34,580 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:30:34,587 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 (15)] Forceful destruction successful, exit code 0 [2024-11-17 03:30:34,780 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 [2024-11-17 03:30:34,781 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2024-11-17 03:30:34,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:34,781 INFO L85 PathProgramCache]: Analyzing trace with hash 2098759316, now seen corresponding path program 1 times [2024-11-17 03:30:34,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:30:34,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [908367279] [2024-11-17 03:30:34,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:34,782 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 [2024-11-17 03:30:34,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:30:34,783 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) [2024-11-17 03:30:34,784 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 [2024-11-17 03:30:35,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:30:35,748 INFO L255 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-17 03:30:35,751 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:30:35,765 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 [2024-11-17 03:30:35,771 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 [2024-11-17 03:30:35,915 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 [2024-11-17 03:30:35,922 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 [2024-11-17 03:30:35,989 INFO L349 Elim1Store]: treesize reduction 28, result has 34.9 percent of original size [2024-11-17 03:30:35,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 28 [2024-11-17 03:30:35,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-17 03:30:36,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-17 03:30:36,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2024-11-17 03:30:36,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-17 03:30:36,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2024-11-17 03:30:36,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2024-11-17 03:30:36,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-17 03:30:36,170 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 [2024-11-17 03:30:36,186 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:36,186 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:30:36,282 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))) (and (forall ((v_ArrVal_580 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_580) |c_~#c~0.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_580 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_579 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_580) |c_~#c~0.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_579) |c_~#c~0.base|) .cse1)))))) is different from false [2024-11-17 03:30:36,334 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))) (and (forall ((v_ArrVal_580 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_580) |c_~#c~0.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_580 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_579 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_580) |c_~#c~0.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_579) |c_~#c~0.base|) .cse1)))))) is different from false [2024-11-17 03:30:36,567 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:30:36,568 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 49 [2024-11-17 03:30:36,575 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:30:36,576 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 41 [2024-11-17 03:30:36,600 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:30:36,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 74 treesize of output 77 [2024-11-17 03:30:36,632 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:30:36,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 118 treesize of output 113 [2024-11-17 03:30:36,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-11-17 03:30:36,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 14 [2024-11-17 03:30:37,346 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:30:37,346 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 38 [2024-11-17 03:30:37,367 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:30:37,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 60 treesize of output 55 [2024-11-17 03:30:37,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-17 03:30:40,057 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2024-11-17 03:30:40,057 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:30:40,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [908367279] [2024-11-17 03:30:40,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [908367279] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:30:40,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 03:30:40,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2024-11-17 03:30:40,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241129773] [2024-11-17 03:30:40,058 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 03:30:40,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-17 03:30:40,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:30:40,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-17 03:30:40,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=175, Unknown=2, NotChecked=54, Total=272 [2024-11-17 03:30:40,614 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 141 [2024-11-17 03:30:40,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 130 transitions, 506 flow. Second operand has 17 states, 17 states have (on average 35.23529411764706) internal successors, (599), 17 states have internal predecessors, (599), 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) [2024-11-17 03:30:40,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:30:40,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 141 [2024-11-17 03:30:40,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:30:44,520 INFO L124 PetriNetUnfolderBase]: 465/1347 cut-off events. [2024-11-17 03:30:44,521 INFO L125 PetriNetUnfolderBase]: For 231/231 co-relation queries the response was YES. [2024-11-17 03:30:44,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2625 conditions, 1347 events. 465/1347 cut-off events. For 231/231 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 8890 event pairs, 422 based on Foata normal form. 6/927 useless extension candidates. Maximal degree in co-relation 2531. Up to 945 conditions per place. [2024-11-17 03:30:44,532 INFO L140 encePairwiseOnDemand]: 131/141 looper letters, 79 selfloop transitions, 23 changer transitions 0/135 dead transitions. [2024-11-17 03:30:44,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 135 transitions, 724 flow [2024-11-17 03:30:44,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-17 03:30:44,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-17 03:30:44,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 483 transitions. [2024-11-17 03:30:44,537 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2854609929078014 [2024-11-17 03:30:44,537 INFO L175 Difference]: Start difference. First operand has 147 places, 130 transitions, 506 flow. Second operand 12 states and 483 transitions. [2024-11-17 03:30:44,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 135 transitions, 724 flow [2024-11-17 03:30:44,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 135 transitions, 706 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-11-17 03:30:44,542 INFO L231 Difference]: Finished difference. Result has 158 places, 131 transitions, 542 flow [2024-11-17 03:30:44,543 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=542, PETRI_PLACES=158, PETRI_TRANSITIONS=131} [2024-11-17 03:30:44,543 INFO L277 CegarLoopForPetriNet]: 120 programPoint places, 38 predicate places. [2024-11-17 03:30:44,544 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 131 transitions, 542 flow [2024-11-17 03:30:44,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 35.23529411764706) internal successors, (599), 17 states have internal predecessors, (599), 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) [2024-11-17 03:30:44,544 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:44,545 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:30:44,555 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 (16)] Forceful destruction successful, exit code 0 [2024-11-17 03:30:44,745 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 [2024-11-17 03:30:44,745 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2024-11-17 03:30:44,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:44,746 INFO L85 PathProgramCache]: Analyzing trace with hash 2098759315, now seen corresponding path program 1 times [2024-11-17 03:30:44,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:30:44,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1988017826] [2024-11-17 03:30:44,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:44,747 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 [2024-11-17 03:30:44,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:30:44,748 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) [2024-11-17 03:30:44,749 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 [2024-11-17 03:30:45,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:30:45,562 INFO L255 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-17 03:30:45,564 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:30:45,567 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 [2024-11-17 03:30:45,658 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 23 treesize of output 1 [2024-11-17 03:30:45,761 INFO L349 Elim1Store]: treesize reduction 86, result has 31.2 percent of original size [2024-11-17 03:30:45,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 34 treesize of output 59 [2024-11-17 03:30:45,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 29 [2024-11-17 03:30:45,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 29 [2024-11-17 03:30:45,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 21 [2024-11-17 03:30:46,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-17 03:30:46,088 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:46,088 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:30:46,169 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_683 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_683) |c_~#c~0.base|) (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|))))))) is different from false [2024-11-17 03:30:46,189 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_683 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_683) |c_~#c~0.base|) (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|))))))) is different from false [2024-11-17 03:30:50,407 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:30:50,408 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2024-11-17 03:30:50,437 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:30:50,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 52 treesize of output 55 [2024-11-17 03:30:50,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 14 [2024-11-17 03:30:51,658 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2024-11-17 03:30:51,658 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:30:51,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1988017826] [2024-11-17 03:30:51,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1988017826] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:30:51,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 03:30:51,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2024-11-17 03:30:51,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120278091] [2024-11-17 03:30:51,659 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 03:30:51,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-17 03:30:51,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:30:51,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-17 03:30:51,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=141, Unknown=9, NotChecked=50, Total=240 [2024-11-17 03:30:52,039 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 141 [2024-11-17 03:30:52,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 131 transitions, 542 flow. Second operand has 16 states, 16 states have (on average 43.125) internal successors, (690), 16 states have internal predecessors, (690), 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) [2024-11-17 03:30:52,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:30:52,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 141 [2024-11-17 03:30:52,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:30:54,085 INFO L124 PetriNetUnfolderBase]: 329/1083 cut-off events. [2024-11-17 03:30:54,085 INFO L125 PetriNetUnfolderBase]: For 280/280 co-relation queries the response was YES. [2024-11-17 03:30:54,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2119 conditions, 1083 events. 329/1083 cut-off events. For 280/280 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 6876 event pairs, 292 based on Foata normal form. 0/853 useless extension candidates. Maximal degree in co-relation 2017. Up to 672 conditions per place. [2024-11-17 03:30:54,092 INFO L140 encePairwiseOnDemand]: 133/141 looper letters, 71 selfloop transitions, 22 changer transitions 0/134 dead transitions. [2024-11-17 03:30:54,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 134 transitions, 736 flow [2024-11-17 03:30:54,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-17 03:30:54,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-17 03:30:54,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 529 transitions. [2024-11-17 03:30:54,095 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34107027724049 [2024-11-17 03:30:54,095 INFO L175 Difference]: Start difference. First operand has 158 places, 131 transitions, 542 flow. Second operand 11 states and 529 transitions. [2024-11-17 03:30:54,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 134 transitions, 736 flow [2024-11-17 03:30:54,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 134 transitions, 681 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-11-17 03:30:54,099 INFO L231 Difference]: Finished difference. Result has 156 places, 130 transitions, 527 flow [2024-11-17 03:30:54,099 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=527, PETRI_PLACES=156, PETRI_TRANSITIONS=130} [2024-11-17 03:30:54,100 INFO L277 CegarLoopForPetriNet]: 120 programPoint places, 36 predicate places. [2024-11-17 03:30:54,100 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 130 transitions, 527 flow [2024-11-17 03:30:54,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 43.125) internal successors, (690), 16 states have internal predecessors, (690), 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) [2024-11-17 03:30:54,101 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:54,101 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 03:30:54,111 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 [2024-11-17 03:30:54,301 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 [2024-11-17 03:30:54,301 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2024-11-17 03:30:54,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:54,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1622952460, now seen corresponding path program 2 times [2024-11-17 03:30:54,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:30:54,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2025951000] [2024-11-17 03:30:54,303 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 03:30:54,303 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 [2024-11-17 03:30:54,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:30:54,304 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) [2024-11-17 03:30:54,305 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 [2024-11-17 03:30:55,129 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 03:30:55,129 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:30:55,149 INFO L255 TraceCheckSpWp]: Trace formula consists of 867 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 03:30:55,151 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:30:55,233 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 3 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:55,233 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:30:55,401 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 3 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:55,401 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:30:55,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2025951000] [2024-11-17 03:30:55,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2025951000] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:30:55,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 03:30:55,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2024-11-17 03:30:55,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082477727] [2024-11-17 03:30:55,402 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 03:30:55,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 03:30:55,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:30:55,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 03:30:55,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-11-17 03:30:55,406 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 141 [2024-11-17 03:30:55,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 130 transitions, 527 flow. Second operand has 12 states, 12 states have (on average 85.0) internal successors, (1020), 12 states have internal predecessors, (1020), 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) [2024-11-17 03:30:55,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:30:55,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 141 [2024-11-17 03:30:55,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:30:56,574 INFO L124 PetriNetUnfolderBase]: 122/725 cut-off events. [2024-11-17 03:30:56,574 INFO L125 PetriNetUnfolderBase]: For 809/809 co-relation queries the response was YES. [2024-11-17 03:30:56,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1587 conditions, 725 events. 122/725 cut-off events. For 809/809 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3114 event pairs, 100 based on Foata normal form. 12/666 useless extension candidates. Maximal degree in co-relation 1502. Up to 255 conditions per place. [2024-11-17 03:30:56,579 INFO L140 encePairwiseOnDemand]: 137/141 looper letters, 90 selfloop transitions, 23 changer transitions 0/182 dead transitions. [2024-11-17 03:30:56,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 182 transitions, 1217 flow [2024-11-17 03:30:56,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-17 03:30:56,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-17 03:30:56,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1065 transitions. [2024-11-17 03:30:56,582 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6294326241134752 [2024-11-17 03:30:56,582 INFO L175 Difference]: Start difference. First operand has 156 places, 130 transitions, 527 flow. Second operand 12 states and 1065 transitions. [2024-11-17 03:30:56,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 182 transitions, 1217 flow [2024-11-17 03:30:56,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 182 transitions, 1074 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-11-17 03:30:56,588 INFO L231 Difference]: Finished difference. Result has 164 places, 143 transitions, 709 flow [2024-11-17 03:30:56,589 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=709, PETRI_PLACES=164, PETRI_TRANSITIONS=143} [2024-11-17 03:30:56,589 INFO L277 CegarLoopForPetriNet]: 120 programPoint places, 44 predicate places. [2024-11-17 03:30:56,589 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 143 transitions, 709 flow [2024-11-17 03:30:56,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 85.0) internal successors, (1020), 12 states have internal predecessors, (1020), 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) [2024-11-17 03:30:56,590 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:56,590 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 03:30:56,604 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 [2024-11-17 03:30:56,790 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 [2024-11-17 03:30:56,791 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2024-11-17 03:30:56,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:56,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1784510460, now seen corresponding path program 3 times [2024-11-17 03:30:56,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:30:56,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [835444615] [2024-11-17 03:30:56,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-17 03:30:56,792 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 [2024-11-17 03:30:56,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:30:56,793 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) [2024-11-17 03:30:56,794 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 [2024-11-17 03:31:11,986 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-17 03:31:11,987 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:31:12,060 INFO L255 TraceCheckSpWp]: Trace formula consists of 1677 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-17 03:31:12,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:31:12,296 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 3 proven. 470 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:31:12,296 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:31:12,789 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 3 proven. 470 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:31:12,789 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:31:12,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [835444615] [2024-11-17 03:31:12,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [835444615] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:31:12,789 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 03:31:12,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2024-11-17 03:31:12,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868437156] [2024-11-17 03:31:12,790 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 03:31:12,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-17 03:31:12,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:31:12,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-17 03:31:12,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2024-11-17 03:31:12,793 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 141 [2024-11-17 03:31:12,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 143 transitions, 709 flow. Second operand has 24 states, 24 states have (on average 85.5) internal successors, (2052), 24 states have internal predecessors, (2052), 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) [2024-11-17 03:31:12,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:31:12,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 141 [2024-11-17 03:31:12,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:31:15,457 INFO L124 PetriNetUnfolderBase]: 122/989 cut-off events. [2024-11-17 03:31:15,457 INFO L125 PetriNetUnfolderBase]: For 2991/2991 co-relation queries the response was YES. [2024-11-17 03:31:15,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2374 conditions, 989 events. 122/989 cut-off events. For 2991/2991 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3155 event pairs, 100 based on Foata normal form. 24/942 useless extension candidates. Maximal degree in co-relation 2286. Up to 255 conditions per place. [2024-11-17 03:31:15,463 INFO L140 encePairwiseOnDemand]: 137/141 looper letters, 150 selfloop transitions, 47 changer transitions 0/266 dead transitions. [2024-11-17 03:31:15,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 266 transitions, 2110 flow [2024-11-17 03:31:15,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-17 03:31:15,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-17 03:31:15,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2103 transitions. [2024-11-17 03:31:15,470 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6214539007092199 [2024-11-17 03:31:15,471 INFO L175 Difference]: Start difference. First operand has 164 places, 143 transitions, 709 flow. Second operand 24 states and 2103 transitions. [2024-11-17 03:31:15,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 266 transitions, 2110 flow [2024-11-17 03:31:15,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 266 transitions, 2098 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 03:31:15,481 INFO L231 Difference]: Finished difference. Result has 197 places, 168 transitions, 1242 flow [2024-11-17 03:31:15,481 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1242, PETRI_PLACES=197, PETRI_TRANSITIONS=168} [2024-11-17 03:31:15,482 INFO L277 CegarLoopForPetriNet]: 120 programPoint places, 77 predicate places. [2024-11-17 03:31:15,482 INFO L471 AbstractCegarLoop]: Abstraction has has 197 places, 168 transitions, 1242 flow [2024-11-17 03:31:15,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 85.5) internal successors, (2052), 24 states have internal predecessors, (2052), 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) [2024-11-17 03:31:15,483 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:31:15,484 INFO L204 CegarLoopForPetriNet]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 03:31:15,528 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 [2024-11-17 03:31:15,684 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 [2024-11-17 03:31:15,684 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2024-11-17 03:31:15,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:31:15,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1290617892, now seen corresponding path program 4 times [2024-11-17 03:31:15,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:31:15,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [760450144] [2024-11-17 03:31:15,686 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-17 03:31:15,686 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 [2024-11-17 03:31:15,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:31:15,687 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) [2024-11-17 03:31:15,688 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