./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 023d838f 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/09-regions_21-arrayloop2_nr.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 52746884466210ec366bc04a3a6cb03f413619353c73143d79c1024e676e598e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 18:06:15,054 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 18:06:15,137 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 18:06:15,144 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 18:06:15,146 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 18:06:15,176 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 18:06:15,177 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 18:06:15,177 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 18:06:15,178 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 18:06:15,179 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 18:06:15,180 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 18:06:15,180 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 18:06:15,181 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 18:06:15,182 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 18:06:15,183 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 18:06:15,183 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 18:06:15,184 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 18:06:15,188 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 18:06:15,189 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 18:06:15,189 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 18:06:15,189 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 18:06:15,190 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 18:06:15,190 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 18:06:15,191 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 18:06:15,191 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 18:06:15,191 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 18:06:15,191 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 18:06:15,192 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 18:06:15,192 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 18:06:15,192 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 18:06:15,193 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 18:06:15,193 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 18:06:15,193 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 18:06:15,196 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:06:15,196 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 18:06:15,197 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 18:06:15,197 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 18:06:15,198 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 18:06:15,198 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 18:06:15,198 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 18:06:15,198 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 18:06:15,199 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 18:06:15,199 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52746884466210ec366bc04a3a6cb03f413619353c73143d79c1024e676e598e [2024-11-10 18:06:15,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 18:06:15,562 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 18:06:15,566 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 18:06:15,568 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 18:06:15,568 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 18:06:15,570 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i [2024-11-10 18:06:17,160 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 18:06:17,480 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 18:06:17,481 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i [2024-11-10 18:06:17,506 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d556b471/1378ce2c96824aa5a85f354ffea267f5/FLAGafe328975 [2024-11-10 18:06:17,754 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d556b471/1378ce2c96824aa5a85f354ffea267f5 [2024-11-10 18:06:17,757 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 18:06:17,759 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 18:06:17,760 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 18:06:17,760 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 18:06:17,766 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 18:06:17,767 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:06:17" (1/1) ... [2024-11-10 18:06:17,768 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@989141e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:06:17, skipping insertion in model container [2024-11-10 18:06:17,768 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:06:17" (1/1) ... [2024-11-10 18:06:17,824 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 18:06:18,231 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 18:06:18,232 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 18:06:18,232 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 18:06:18,233 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 18:06:18,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:06:18,323 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) [2024-11-10 18:06:18,324 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@69ca4d3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:06:18, skipping insertion in model container [2024-11-10 18:06:18,324 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 18:06:18,324 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-10 18:06:18,326 INFO L158 Benchmark]: Toolchain (without parser) took 567.02ms. Allocated memory is still 153.1MB. Free memory was 72.7MB in the beginning and 118.1MB in the end (delta: -45.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-11-10 18:06:18,327 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 153.1MB. Free memory is still 121.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 18:06:18,327 INFO L158 Benchmark]: CACSL2BoogieTranslator took 564.73ms. Allocated memory is still 153.1MB. Free memory was 72.2MB in the beginning and 118.1MB in the end (delta: -45.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-10 18:06:18,328 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 153.1MB. Free memory is still 121.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 564.73ms. Allocated memory is still 153.1MB. Free memory was 72.2MB in the beginning and 118.1MB in the end (delta: -45.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1031]: 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/09-regions_21-arrayloop2_nr.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 52746884466210ec366bc04a3a6cb03f413619353c73143d79c1024e676e598e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 18:06:20,600 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 18:06:20,701 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-10 18:06:20,706 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 18:06:20,706 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 18:06:20,755 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 18:06:20,755 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 18:06:20,757 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 18:06:20,758 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 18:06:20,759 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 18:06:20,759 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 18:06:20,760 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 18:06:20,760 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 18:06:20,762 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 18:06:20,763 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 18:06:20,764 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 18:06:20,764 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 18:06:20,764 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 18:06:20,764 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 18:06:20,765 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 18:06:20,765 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 18:06:20,765 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 18:06:20,769 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 18:06:20,770 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 18:06:20,770 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 18:06:20,770 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-10 18:06:20,770 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 18:06:20,771 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-10 18:06:20,771 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 18:06:20,771 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 18:06:20,771 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 18:06:20,771 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 18:06:20,772 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 18:06:20,772 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 18:06:20,772 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 18:06:20,772 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:06:20,772 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 18:06:20,773 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 18:06:20,773 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-10 18:06:20,773 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-10 18:06:20,773 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 18:06:20,775 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 18:06:20,776 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 18:06:20,776 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 18:06:20,776 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52746884466210ec366bc04a3a6cb03f413619353c73143d79c1024e676e598e [2024-11-10 18:06:21,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 18:06:21,174 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 18:06:21,179 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 18:06:21,181 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 18:06:21,182 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 18:06:21,183 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i [2024-11-10 18:06:22,880 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 18:06:23,197 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 18:06:23,198 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i [2024-11-10 18:06:23,228 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c55b6e743/6d17da11f8a74b66b6741f631b48b54d/FLAGcad2684e1 [2024-11-10 18:06:23,459 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c55b6e743/6d17da11f8a74b66b6741f631b48b54d [2024-11-10 18:06:23,462 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 18:06:23,464 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 18:06:23,465 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 18:06:23,465 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 18:06:23,472 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 18:06:23,472 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:06:23" (1/1) ... [2024-11-10 18:06:23,473 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bd98346 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:06:23, skipping insertion in model container [2024-11-10 18:06:23,473 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:06:23" (1/1) ... [2024-11-10 18:06:23,528 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 18:06:24,124 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 18:06:24,125 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 18:06:24,125 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 18:06:24,126 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 18:06:24,168 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:06:24,227 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-10 18:06:24,238 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 18:06:24,296 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 18:06:24,298 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 18:06:24,299 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 18:06:24,299 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 18:06:24,313 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:06:24,342 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 18:06:24,390 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 18:06:24,392 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 18:06:24,392 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 18:06:24,392 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 18:06:24,404 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:06:24,499 INFO L204 MainTranslator]: Completed translation [2024-11-10 18:06:24,500 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:06:24 WrapperNode [2024-11-10 18:06:24,501 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 18:06:24,502 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 18:06:24,502 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 18:06:24,503 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 18:06:24,510 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:06:24" (1/1) ... [2024-11-10 18:06:24,544 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:06:24" (1/1) ... [2024-11-10 18:06:24,582 INFO L138 Inliner]: procedures = 274, calls = 95, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 177 [2024-11-10 18:06:24,583 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 18:06:24,584 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 18:06:24,584 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 18:06:24,584 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 18:06:24,598 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:06:24" (1/1) ... [2024-11-10 18:06:24,599 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:06:24" (1/1) ... [2024-11-10 18:06:24,607 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:06:24" (1/1) ... [2024-11-10 18:06:24,644 INFO L175 MemorySlicer]: Split 84 memory accesses to 1 slices as follows [84]. 100 percent of accesses are in the largest equivalence class. The 70 initializations are split as follows [70]. The 10 writes are split as follows [10]. [2024-11-10 18:06:24,645 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:06:24" (1/1) ... [2024-11-10 18:06:24,645 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:06:24" (1/1) ... [2024-11-10 18:06:24,664 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:06:24" (1/1) ... [2024-11-10 18:06:24,665 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:06:24" (1/1) ... [2024-11-10 18:06:24,667 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:06:24" (1/1) ... [2024-11-10 18:06:24,670 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:06:24" (1/1) ... [2024-11-10 18:06:24,676 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 18:06:24,679 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 18:06:24,679 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 18:06:24,679 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 18:06:24,680 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:06:24" (1/1) ... [2024-11-10 18:06:24,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:06:24,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:06:24,729 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) [2024-11-10 18:06:24,736 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 [2024-11-10 18:06:24,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-10 18:06:24,788 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-11-10 18:06:24,789 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-11-10 18:06:24,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-10 18:06:24,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-10 18:06:24,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-10 18:06:24,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-11-10 18:06:24,789 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-10 18:06:24,789 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-10 18:06:24,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 18:06:24,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 18:06:24,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-10 18:06:24,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 18:06:24,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 18:06:24,794 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 18:06:24,970 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 18:06:24,972 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 18:06:25,861 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 18:06:25,861 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 18:06:27,766 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 18:06:27,767 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 18:06:27,769 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:06:27 BoogieIcfgContainer [2024-11-10 18:06:27,769 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 18:06:27,771 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 18:06:27,773 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 18:06:27,776 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 18:06:27,777 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 06:06:23" (1/3) ... [2024-11-10 18:06:27,777 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a7b58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:06:27, skipping insertion in model container [2024-11-10 18:06:27,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:06:24" (2/3) ... [2024-11-10 18:06:27,778 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a7b58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:06:27, skipping insertion in model container [2024-11-10 18:06:27,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:06:27" (3/3) ... [2024-11-10 18:06:27,779 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_21-arrayloop2_nr.i [2024-11-10 18:06:27,799 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 18:06:27,800 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 29 error locations. [2024-11-10 18:06:27,800 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 18:06:27,943 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 18:06:27,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 101 transitions, 210 flow [2024-11-10 18:06:28,050 INFO L124 PetriNetUnfolderBase]: 12/99 cut-off events. [2024-11-10 18:06:28,051 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:06:28,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 99 events. 12/99 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 363 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 71. Up to 2 conditions per place. [2024-11-10 18:06:28,057 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 101 transitions, 210 flow [2024-11-10 18:06:28,062 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 99 transitions, 204 flow [2024-11-10 18:06:28,077 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:06:28,086 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;@344e8066, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:06:28,086 INFO L334 AbstractCegarLoop]: Starting to check reachability of 47 error locations. [2024-11-10 18:06:28,100 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 18:06:28,100 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-10 18:06:28,101 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:06:28,102 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:06:28,103 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 18:06:28,103 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-10 18:06:28,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:06:28,109 INFO L85 PathProgramCache]: Analyzing trace with hash 14764315, now seen corresponding path program 1 times [2024-11-10 18:06:28,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:06:28,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1937759488] [2024-11-10 18:06:28,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:06:28,128 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 [2024-11-10 18:06:28,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:06:28,131 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) [2024-11-10 18:06:28,133 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 [2024-11-10 18:06:28,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:06:28,314 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 18:06:28,320 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:06:28,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:06:28,426 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:06:28,427 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:06:28,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1937759488] [2024-11-10 18:06:28,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1937759488] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:06:28,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:06:28,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:06:28,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330491970] [2024-11-10 18:06:28,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:06:28,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:06:28,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:06:28,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:06:28,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:06:28,666 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 101 [2024-11-10 18:06:28,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 99 transitions, 204 flow. Second operand has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 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) [2024-11-10 18:06:28,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:06:28,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 101 [2024-11-10 18:06:28,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:06:29,125 INFO L124 PetriNetUnfolderBase]: 389/883 cut-off events. [2024-11-10 18:06:29,127 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-10 18:06:29,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1512 conditions, 883 events. 389/883 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5379 event pairs, 287 based on Foata normal form. 103/807 useless extension candidates. Maximal degree in co-relation 1455. Up to 606 conditions per place. [2024-11-10 18:06:29,145 INFO L140 encePairwiseOnDemand]: 88/101 looper letters, 32 selfloop transitions, 3 changer transitions 0/89 dead transitions. [2024-11-10 18:06:29,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 89 transitions, 254 flow [2024-11-10 18:06:29,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:06:29,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 18:06:29,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 269 transitions. [2024-11-10 18:06:29,166 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6658415841584159 [2024-11-10 18:06:29,168 INFO L175 Difference]: Start difference. First operand has 94 places, 99 transitions, 204 flow. Second operand 4 states and 269 transitions. [2024-11-10 18:06:29,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 89 transitions, 254 flow [2024-11-10 18:06:29,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 89 transitions, 252 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:06:29,177 INFO L231 Difference]: Finished difference. Result has 91 places, 89 transitions, 188 flow [2024-11-10 18:06:29,184 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=188, PETRI_PLACES=91, PETRI_TRANSITIONS=89} [2024-11-10 18:06:29,191 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, -3 predicate places. [2024-11-10 18:06:29,191 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 89 transitions, 188 flow [2024-11-10 18:06:29,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 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) [2024-11-10 18:06:29,192 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:06:29,192 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 18:06:29,199 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-10 18:06:29,393 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 [2024-11-10 18:06:29,394 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-10 18:06:29,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:06:29,397 INFO L85 PathProgramCache]: Analyzing trace with hash 14764316, now seen corresponding path program 1 times [2024-11-10 18:06:29,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:06:29,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [762796792] [2024-11-10 18:06:29,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:06:29,398 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 [2024-11-10 18:06:29,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:06:29,402 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) [2024-11-10 18:06:29,404 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 [2024-11-10 18:06:29,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:06:29,595 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-10 18:06:29,596 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:06:29,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:06:29,688 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:06:29,688 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:06:29,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [762796792] [2024-11-10 18:06:29,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [762796792] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:06:29,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:06:29,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:06:29,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321164121] [2024-11-10 18:06:29,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:06:29,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:06:29,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:06:29,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:06:29,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:06:30,042 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 101 [2024-11-10 18:06:30,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 89 transitions, 188 flow. Second operand has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 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) [2024-11-10 18:06:30,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:06:30,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 101 [2024-11-10 18:06:30,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:06:30,506 INFO L124 PetriNetUnfolderBase]: 390/891 cut-off events. [2024-11-10 18:06:30,507 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-10 18:06:30,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1531 conditions, 891 events. 390/891 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5286 event pairs, 287 based on Foata normal form. 3/716 useless extension candidates. Maximal degree in co-relation 1500. Up to 612 conditions per place. [2024-11-10 18:06:30,517 INFO L140 encePairwiseOnDemand]: 93/101 looper letters, 37 selfloop transitions, 5 changer transitions 0/93 dead transitions. [2024-11-10 18:06:30,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 93 transitions, 284 flow [2024-11-10 18:06:30,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:06:30,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 18:06:30,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 273 transitions. [2024-11-10 18:06:30,522 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6757425742574258 [2024-11-10 18:06:30,523 INFO L175 Difference]: Start difference. First operand has 91 places, 89 transitions, 188 flow. Second operand 4 states and 273 transitions. [2024-11-10 18:06:30,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 93 transitions, 284 flow [2024-11-10 18:06:30,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 93 transitions, 274 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 18:06:30,528 INFO L231 Difference]: Finished difference. Result has 93 places, 93 transitions, 221 flow [2024-11-10 18:06:30,529 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=221, PETRI_PLACES=93, PETRI_TRANSITIONS=93} [2024-11-10 18:06:30,530 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, -1 predicate places. [2024-11-10 18:06:30,531 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 93 transitions, 221 flow [2024-11-10 18:06:30,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 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) [2024-11-10 18:06:30,532 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:06:30,533 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:06:30,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-10 18:06:30,733 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 [2024-11-10 18:06:30,734 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-10 18:06:30,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:06:30,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1354190699, now seen corresponding path program 1 times [2024-11-10 18:06:30,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:06:30,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1365591948] [2024-11-10 18:06:30,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:06:30,736 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 18:06:30,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:06:30,740 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) [2024-11-10 18:06:30,742 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 [2024-11-10 18:06:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:06:30,915 INFO L255 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 18:06:30,917 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:06:30,959 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 [2024-11-10 18:06:30,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:06:30,968 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:06:30,968 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:06:30,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1365591948] [2024-11-10 18:06:30,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1365591948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:06:30,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:06:30,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:06:30,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234293683] [2024-11-10 18:06:30,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:06:30,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:06:30,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:06:30,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:06:30,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:06:31,060 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 101 [2024-11-10 18:06:31,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 93 transitions, 221 flow. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 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) [2024-11-10 18:06:31,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:06:31,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 101 [2024-11-10 18:06:31,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:06:31,404 INFO L124 PetriNetUnfolderBase]: 390/890 cut-off events. [2024-11-10 18:06:31,405 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-10 18:06:31,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1538 conditions, 890 events. 390/890 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5291 event pairs, 287 based on Foata normal form. 0/712 useless extension candidates. Maximal degree in co-relation 1505. Up to 607 conditions per place. [2024-11-10 18:06:31,414 INFO L140 encePairwiseOnDemand]: 98/101 looper letters, 34 selfloop transitions, 3 changer transitions 0/92 dead transitions. [2024-11-10 18:06:31,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 92 transitions, 293 flow [2024-11-10 18:06:31,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:06:31,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:06:31,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 217 transitions. [2024-11-10 18:06:31,419 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7161716171617162 [2024-11-10 18:06:31,420 INFO L175 Difference]: Start difference. First operand has 93 places, 93 transitions, 221 flow. Second operand 3 states and 217 transitions. [2024-11-10 18:06:31,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 92 transitions, 293 flow [2024-11-10 18:06:31,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 92 transitions, 290 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:06:31,425 INFO L231 Difference]: Finished difference. Result has 93 places, 92 transitions, 222 flow [2024-11-10 18:06:31,426 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=93, PETRI_TRANSITIONS=92} [2024-11-10 18:06:31,428 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, -1 predicate places. [2024-11-10 18:06:31,429 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 92 transitions, 222 flow [2024-11-10 18:06:31,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 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) [2024-11-10 18:06:31,429 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:06:31,430 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:06:31,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-11-10 18:06:31,630 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 [2024-11-10 18:06:31,631 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-10 18:06:31,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:06:31,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1354190698, now seen corresponding path program 1 times [2024-11-10 18:06:31,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:06:31,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [594634018] [2024-11-10 18:06:31,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:06:31,633 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 [2024-11-10 18:06:31,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:06:31,636 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) [2024-11-10 18:06:31,637 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 [2024-11-10 18:06:31,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:06:31,802 INFO L255 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 18:06:31,805 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:06:31,816 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 [2024-11-10 18:06:31,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:06:31,828 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:06:31,829 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:06:31,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [594634018] [2024-11-10 18:06:31,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [594634018] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:06:31,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:06:31,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:06:31,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130224476] [2024-11-10 18:06:31,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:06:31,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:06:31,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:06:31,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:06:31,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:06:31,966 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 101 [2024-11-10 18:06:31,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 92 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 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) [2024-11-10 18:06:31,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:06:31,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 101 [2024-11-10 18:06:31,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:06:32,331 INFO L124 PetriNetUnfolderBase]: 390/889 cut-off events. [2024-11-10 18:06:32,332 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-11-10 18:06:32,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1538 conditions, 889 events. 390/889 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5290 event pairs, 287 based on Foata normal form. 0/711 useless extension candidates. Maximal degree in co-relation 1504. Up to 607 conditions per place. [2024-11-10 18:06:32,339 INFO L140 encePairwiseOnDemand]: 98/101 looper letters, 34 selfloop transitions, 3 changer transitions 0/91 dead transitions. [2024-11-10 18:06:32,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 91 transitions, 294 flow [2024-11-10 18:06:32,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:06:32,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:06:32,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 217 transitions. [2024-11-10 18:06:32,341 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7161716171617162 [2024-11-10 18:06:32,341 INFO L175 Difference]: Start difference. First operand has 93 places, 92 transitions, 222 flow. Second operand 3 states and 217 transitions. [2024-11-10 18:06:32,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 91 transitions, 294 flow [2024-11-10 18:06:32,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 91 transitions, 288 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:06:32,345 INFO L231 Difference]: Finished difference. Result has 92 places, 91 transitions, 220 flow [2024-11-10 18:06:32,345 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=92, PETRI_TRANSITIONS=91} [2024-11-10 18:06:32,346 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, -2 predicate places. [2024-11-10 18:06:32,346 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 91 transitions, 220 flow [2024-11-10 18:06:32,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 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) [2024-11-10 18:06:32,347 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:06:32,347 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:06:32,352 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-11-10 18:06:32,547 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 [2024-11-10 18:06:32,548 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-10 18:06:32,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:06:32,549 INFO L85 PathProgramCache]: Analyzing trace with hash 969761820, now seen corresponding path program 1 times [2024-11-10 18:06:32,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:06:32,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [822581111] [2024-11-10 18:06:32,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:06:32,550 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 [2024-11-10 18:06:32,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:06:32,552 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) [2024-11-10 18:06:32,554 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 [2024-11-10 18:06:32,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:06:32,725 INFO L255 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 18:06:32,727 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:06:32,735 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 [2024-11-10 18:06:32,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:06:32,751 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:06:32,752 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:06:32,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [822581111] [2024-11-10 18:06:32,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [822581111] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:06:32,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:06:32,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 18:06:32,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751531479] [2024-11-10 18:06:32,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:06:32,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:06:32,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:06:32,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:06:32,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:06:32,909 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 101 [2024-11-10 18:06:32,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 91 transitions, 220 flow. Second operand has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 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) [2024-11-10 18:06:32,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:06:32,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 101 [2024-11-10 18:06:32,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:06:33,263 INFO L124 PetriNetUnfolderBase]: 390/887 cut-off events. [2024-11-10 18:06:33,264 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-11-10 18:06:33,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1539 conditions, 887 events. 390/887 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5268 event pairs, 287 based on Foata normal form. 1/713 useless extension candidates. Maximal degree in co-relation 1504. Up to 607 conditions per place. [2024-11-10 18:06:33,272 INFO L140 encePairwiseOnDemand]: 94/101 looper letters, 32 selfloop transitions, 7 changer transitions 0/89 dead transitions. [2024-11-10 18:06:33,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 89 transitions, 294 flow [2024-11-10 18:06:33,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 18:06:33,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 18:06:33,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 312 transitions. [2024-11-10 18:06:33,277 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6178217821782178 [2024-11-10 18:06:33,277 INFO L175 Difference]: Start difference. First operand has 92 places, 91 transitions, 220 flow. Second operand 5 states and 312 transitions. [2024-11-10 18:06:33,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 89 transitions, 294 flow [2024-11-10 18:06:33,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 89 transitions, 288 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:06:33,281 INFO L231 Difference]: Finished difference. Result has 92 places, 89 transitions, 224 flow [2024-11-10 18:06:33,282 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=224, PETRI_PLACES=92, PETRI_TRANSITIONS=89} [2024-11-10 18:06:33,284 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, -2 predicate places. [2024-11-10 18:06:33,284 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 89 transitions, 224 flow [2024-11-10 18:06:33,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 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) [2024-11-10 18:06:33,285 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:06:33,285 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:06:33,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2024-11-10 18:06:33,488 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 [2024-11-10 18:06:33,489 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-10 18:06:33,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:06:33,490 INFO L85 PathProgramCache]: Analyzing trace with hash 969761821, now seen corresponding path program 1 times [2024-11-10 18:06:33,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:06:33,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1506676514] [2024-11-10 18:06:33,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:06:33,491 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 [2024-11-10 18:06:33,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:06:33,496 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) [2024-11-10 18:06:33,498 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 [2024-11-10 18:06:33,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:06:33,683 INFO L255 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 18:06:33,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:06:33,692 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 [2024-11-10 18:06:33,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:06:33,724 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:06:33,724 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:06:33,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1506676514] [2024-11-10 18:06:33,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1506676514] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:06:33,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:06:33,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 18:06:33,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466535064] [2024-11-10 18:06:33,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:06:33,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:06:33,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:06:33,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:06:33,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:06:33,909 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 101 [2024-11-10 18:06:33,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 89 transitions, 224 flow. Second operand has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 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) [2024-11-10 18:06:33,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:06:33,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 101 [2024-11-10 18:06:33,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:06:34,276 INFO L124 PetriNetUnfolderBase]: 390/885 cut-off events. [2024-11-10 18:06:34,278 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-10 18:06:34,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1541 conditions, 885 events. 390/885 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5260 event pairs, 287 based on Foata normal form. 2/712 useless extension candidates. Maximal degree in co-relation 1502. Up to 609 conditions per place. [2024-11-10 18:06:34,290 INFO L140 encePairwiseOnDemand]: 96/101 looper letters, 35 selfloop transitions, 4 changer transitions 0/87 dead transitions. [2024-11-10 18:06:34,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 87 transitions, 298 flow [2024-11-10 18:06:34,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:06:34,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 18:06:34,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 265 transitions. [2024-11-10 18:06:34,293 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.655940594059406 [2024-11-10 18:06:34,293 INFO L175 Difference]: Start difference. First operand has 92 places, 89 transitions, 224 flow. Second operand 4 states and 265 transitions. [2024-11-10 18:06:34,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 87 transitions, 298 flow [2024-11-10 18:06:34,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 87 transitions, 284 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 18:06:34,298 INFO L231 Difference]: Finished difference. Result has 89 places, 87 transitions, 214 flow [2024-11-10 18:06:34,298 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=214, PETRI_PLACES=89, PETRI_TRANSITIONS=87} [2024-11-10 18:06:34,299 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, -5 predicate places. [2024-11-10 18:06:34,300 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 87 transitions, 214 flow [2024-11-10 18:06:34,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 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) [2024-11-10 18:06:34,301 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:06:34,301 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:06:34,309 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-11-10 18:06:34,501 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 [2024-11-10 18:06:34,502 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-10 18:06:34,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:06:34,503 INFO L85 PathProgramCache]: Analyzing trace with hash -66659199, now seen corresponding path program 1 times [2024-11-10 18:06:34,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:06:34,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [42803075] [2024-11-10 18:06:34,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:06:34,504 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 [2024-11-10 18:06:34,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:06:34,507 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) [2024-11-10 18:06:34,508 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 [2024-11-10 18:06:34,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:06:34,637 INFO L255 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-10 18:06:34,639 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:06:34,649 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:06:34,653 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:06:34,653 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:06:34,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [42803075] [2024-11-10 18:06:34,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [42803075] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:06:34,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:06:34,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 18:06:34,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140448963] [2024-11-10 18:06:34,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:06:34,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:06:34,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:06:34,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:06:34,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:06:34,662 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 101 [2024-11-10 18:06:34,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 87 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 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) [2024-11-10 18:06:34,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:06:34,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 101 [2024-11-10 18:06:34,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:06:34,971 INFO L124 PetriNetUnfolderBase]: 389/903 cut-off events. [2024-11-10 18:06:34,974 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-10 18:06:34,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1561 conditions, 903 events. 389/903 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5264 event pairs, 287 based on Foata normal form. 2/722 useless extension candidates. Maximal degree in co-relation 1531. Up to 608 conditions per place. [2024-11-10 18:06:34,984 INFO L140 encePairwiseOnDemand]: 98/101 looper letters, 39 selfloop transitions, 3 changer transitions 0/91 dead transitions. [2024-11-10 18:06:34,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 91 transitions, 312 flow [2024-11-10 18:06:34,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:06:34,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:06:34,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 223 transitions. [2024-11-10 18:06:34,986 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.735973597359736 [2024-11-10 18:06:34,987 INFO L175 Difference]: Start difference. First operand has 89 places, 87 transitions, 214 flow. Second operand 3 states and 223 transitions. [2024-11-10 18:06:34,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 91 transitions, 312 flow [2024-11-10 18:06:34,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 91 transitions, 296 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-10 18:06:34,990 INFO L231 Difference]: Finished difference. Result has 89 places, 87 transitions, 215 flow [2024-11-10 18:06:34,990 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=215, PETRI_PLACES=89, PETRI_TRANSITIONS=87} [2024-11-10 18:06:34,992 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, -5 predicate places. [2024-11-10 18:06:34,992 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 87 transitions, 215 flow [2024-11-10 18:06:34,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 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) [2024-11-10 18:06:34,992 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:06:34,992 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:06:34,999 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-11-10 18:06:35,193 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 [2024-11-10 18:06:35,193 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-10 18:06:35,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:06:35,194 INFO L85 PathProgramCache]: Analyzing trace with hash -66782212, now seen corresponding path program 1 times [2024-11-10 18:06:35,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:06:35,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [680263135] [2024-11-10 18:06:35,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:06:35,195 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 18:06:35,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:06:35,197 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) [2024-11-10 18:06:35,198 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 [2024-11-10 18:06:35,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:06:35,715 INFO L255 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-10 18:06:35,716 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:06:35,792 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-10 18:06:35,793 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 [2024-11-10 18:06:35,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:06:35,849 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:06:35,849 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:06:35,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [680263135] [2024-11-10 18:06:35,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [680263135] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:06:35,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:06:35,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:06:35,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427284460] [2024-11-10 18:06:35,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:06:35,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:06:35,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:06:35,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:06:35,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:06:36,036 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 101 [2024-11-10 18:06:36,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 87 transitions, 215 flow. Second operand has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 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) [2024-11-10 18:06:36,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:06:36,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 101 [2024-11-10 18:06:36,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:06:36,380 INFO L124 PetriNetUnfolderBase]: 389/899 cut-off events. [2024-11-10 18:06:36,381 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-11-10 18:06:36,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1555 conditions, 899 events. 389/899 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5261 event pairs, 287 based on Foata normal form. 2/722 useless extension candidates. Maximal degree in co-relation 1523. Up to 609 conditions per place. [2024-11-10 18:06:36,390 INFO L140 encePairwiseOnDemand]: 96/101 looper letters, 33 selfloop transitions, 4 changer transitions 0/85 dead transitions. [2024-11-10 18:06:36,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 85 transitions, 285 flow [2024-11-10 18:06:36,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:06:36,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 18:06:36,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 267 transitions. [2024-11-10 18:06:36,393 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6608910891089109 [2024-11-10 18:06:36,394 INFO L175 Difference]: Start difference. First operand has 89 places, 87 transitions, 215 flow. Second operand 4 states and 267 transitions. [2024-11-10 18:06:36,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 85 transitions, 285 flow [2024-11-10 18:06:36,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 85 transitions, 282 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:06:36,397 INFO L231 Difference]: Finished difference. Result has 89 places, 85 transitions, 216 flow [2024-11-10 18:06:36,398 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=216, PETRI_PLACES=89, PETRI_TRANSITIONS=85} [2024-11-10 18:06:36,400 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, -5 predicate places. [2024-11-10 18:06:36,400 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 85 transitions, 216 flow [2024-11-10 18:06:36,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 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) [2024-11-10 18:06:36,401 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:06:36,401 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:06:36,412 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-11-10 18:06:36,601 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 [2024-11-10 18:06:36,602 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-10 18:06:36,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:06:36,603 INFO L85 PathProgramCache]: Analyzing trace with hash -66782211, now seen corresponding path program 1 times [2024-11-10 18:06:36,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:06:36,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [794634939] [2024-11-10 18:06:36,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:06:36,604 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 [2024-11-10 18:06:36,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:06:36,606 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) [2024-11-10 18:06:36,608 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 [2024-11-10 18:06:37,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:06:37,120 INFO L255 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-10 18:06:37,122 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:06:37,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 18:06:37,255 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 [2024-11-10 18:06:37,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:06:37,321 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:06:37,321 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:06:37,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [794634939] [2024-11-10 18:06:37,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [794634939] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:06:37,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:06:37,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 18:06:37,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232003083] [2024-11-10 18:06:37,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:06:37,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 18:06:37,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:06:37,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 18:06:37,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 18:06:37,723 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 101 [2024-11-10 18:06:37,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 85 transitions, 216 flow. Second operand has 5 states, 5 states have (on average 58.4) internal successors, (292), 5 states have internal predecessors, (292), 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) [2024-11-10 18:06:37,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:06:37,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 101 [2024-11-10 18:06:37,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:06:38,148 INFO L124 PetriNetUnfolderBase]: 390/931 cut-off events. [2024-11-10 18:06:38,148 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-11-10 18:06:38,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1614 conditions, 931 events. 390/931 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5625 event pairs, 287 based on Foata normal form. 2/739 useless extension candidates. Maximal degree in co-relation 1523. Up to 616 conditions per place. [2024-11-10 18:06:38,157 INFO L140 encePairwiseOnDemand]: 95/101 looper letters, 42 selfloop transitions, 5 changer transitions 0/92 dead transitions. [2024-11-10 18:06:38,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 92 transitions, 336 flow [2024-11-10 18:06:38,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:06:38,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 18:06:38,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 274 transitions. [2024-11-10 18:06:38,160 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6782178217821783 [2024-11-10 18:06:38,160 INFO L175 Difference]: Start difference. First operand has 89 places, 85 transitions, 216 flow. Second operand 4 states and 274 transitions. [2024-11-10 18:06:38,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 92 transitions, 336 flow [2024-11-10 18:06:38,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 92 transitions, 322 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 18:06:38,163 INFO L231 Difference]: Finished difference. Result has 91 places, 89 transitions, 250 flow [2024-11-10 18:06:38,163 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=250, PETRI_PLACES=91, PETRI_TRANSITIONS=89} [2024-11-10 18:06:38,164 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, -3 predicate places. [2024-11-10 18:06:38,164 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 89 transitions, 250 flow [2024-11-10 18:06:38,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 58.4) internal successors, (292), 5 states have internal predecessors, (292), 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) [2024-11-10 18:06:38,165 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:06:38,165 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:06:38,174 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-11-10 18:06:38,365 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 [2024-11-10 18:06:38,366 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-10 18:06:38,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:06:38,366 INFO L85 PathProgramCache]: Analyzing trace with hash -2070248040, now seen corresponding path program 1 times [2024-11-10 18:06:38,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:06:38,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [378883564] [2024-11-10 18:06:38,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:06:38,367 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 [2024-11-10 18:06:38,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:06:38,368 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) [2024-11-10 18:06:38,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-11-10 18:06:38,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:06:38,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-10 18:06:38,991 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:06:39,096 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 [2024-11-10 18:06:39,154 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 [2024-11-10 18:06:39,217 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-10 18:06:39,217 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 [2024-11-10 18:06:39,259 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 [2024-11-10 18:06:39,308 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 20 treesize of output 15 [2024-11-10 18:06:39,343 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 [2024-11-10 18:06:39,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:06:39,397 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:06:39,397 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:06:39,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [378883564] [2024-11-10 18:06:39,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [378883564] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:06:39,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:06:39,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-10 18:06:39,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48296188] [2024-11-10 18:06:39,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:06:39,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 18:06:39,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:06:39,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 18:06:39,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-10 18:06:40,280 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 101 [2024-11-10 18:06:40,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 89 transitions, 250 flow. Second operand has 10 states, 10 states have (on average 50.0) internal successors, (500), 10 states have internal predecessors, (500), 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) [2024-11-10 18:06:40,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:06:40,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 101 [2024-11-10 18:06:40,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:06:40,953 INFO L124 PetriNetUnfolderBase]: 390/929 cut-off events. [2024-11-10 18:06:40,953 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-11-10 18:06:40,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1640 conditions, 929 events. 390/929 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5592 event pairs, 287 based on Foata normal form. 0/752 useless extension candidates. Maximal degree in co-relation 1548. Up to 621 conditions per place. [2024-11-10 18:06:40,961 INFO L140 encePairwiseOnDemand]: 90/101 looper letters, 41 selfloop transitions, 15 changer transitions 0/98 dead transitions. [2024-11-10 18:06:40,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 98 transitions, 388 flow [2024-11-10 18:06:40,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 18:06:40,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-10 18:06:40,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 588 transitions. [2024-11-10 18:06:40,965 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5292529252925292 [2024-11-10 18:06:40,965 INFO L175 Difference]: Start difference. First operand has 91 places, 89 transitions, 250 flow. Second operand 11 states and 588 transitions. [2024-11-10 18:06:40,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 98 transitions, 388 flow [2024-11-10 18:06:40,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 98 transitions, 386 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:06:40,969 INFO L231 Difference]: Finished difference. Result has 105 places, 95 transitions, 327 flow [2024-11-10 18:06:40,969 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=327, PETRI_PLACES=105, PETRI_TRANSITIONS=95} [2024-11-10 18:06:40,970 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 11 predicate places. [2024-11-10 18:06:40,971 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 95 transitions, 327 flow [2024-11-10 18:06:40,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 50.0) internal successors, (500), 10 states have internal predecessors, (500), 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) [2024-11-10 18:06:40,972 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:06:40,972 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:06:40,980 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 [2024-11-10 18:06:41,172 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 [2024-11-10 18:06:41,173 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-10 18:06:41,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:06:41,173 INFO L85 PathProgramCache]: Analyzing trace with hash -2070248039, now seen corresponding path program 1 times [2024-11-10 18:06:41,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:06:41,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1739406132] [2024-11-10 18:06:41,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:06:41,174 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 [2024-11-10 18:06:41,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:06:41,176 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) [2024-11-10 18:06:41,177 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 [2024-11-10 18:06:41,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:06:41,789 INFO L255 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-10 18:06:41,793 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:06:41,915 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 11 treesize of output 7 [2024-11-10 18:06:41,930 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 [2024-11-10 18:06:42,006 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 [2024-11-10 18:06:42,020 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 [2024-11-10 18:06:42,100 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-10 18:06:42,101 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 13 [2024-11-10 18:06:42,116 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-10 18:06:42,117 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 [2024-11-10 18:06:42,170 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 [2024-11-10 18:06:42,186 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 [2024-11-10 18:06:42,278 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 [2024-11-10 18:06:42,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-10 18:06:42,328 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 [2024-11-10 18:06:42,335 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 [2024-11-10 18:06:42,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:06:42,389 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:06:42,389 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:06:42,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1739406132] [2024-11-10 18:06:42,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1739406132] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:06:42,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:06:42,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-10 18:06:42,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297084184] [2024-11-10 18:06:42,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:06:42,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 18:06:42,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:06:42,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 18:06:42,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-10 18:06:43,477 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 101 [2024-11-10 18:06:43,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 95 transitions, 327 flow. Second operand has 10 states, 10 states have (on average 43.0) internal successors, (430), 10 states have internal predecessors, (430), 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) [2024-11-10 18:06:43,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:06:43,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 101 [2024-11-10 18:06:43,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:06:44,392 INFO L124 PetriNetUnfolderBase]: 390/928 cut-off events. [2024-11-10 18:06:44,393 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-11-10 18:06:44,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1692 conditions, 928 events. 390/928 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5586 event pairs, 287 based on Foata normal form. 1/754 useless extension candidates. Maximal degree in co-relation 1555. Up to 629 conditions per place. [2024-11-10 18:06:44,403 INFO L140 encePairwiseOnDemand]: 90/101 looper letters, 63 selfloop transitions, 10 changer transitions 0/110 dead transitions. [2024-11-10 18:06:44,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 110 transitions, 526 flow [2024-11-10 18:06:44,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 18:06:44,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 18:06:44,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 488 transitions. [2024-11-10 18:06:44,407 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48316831683168315 [2024-11-10 18:06:44,408 INFO L175 Difference]: Start difference. First operand has 105 places, 95 transitions, 327 flow. Second operand 10 states and 488 transitions. [2024-11-10 18:06:44,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 110 transitions, 526 flow [2024-11-10 18:06:44,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 110 transitions, 508 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-10 18:06:44,415 INFO L231 Difference]: Finished difference. Result has 113 places, 98 transitions, 361 flow [2024-11-10 18:06:44,415 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=361, PETRI_PLACES=113, PETRI_TRANSITIONS=98} [2024-11-10 18:06:44,416 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 19 predicate places. [2024-11-10 18:06:44,416 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 98 transitions, 361 flow [2024-11-10 18:06:44,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 43.0) internal successors, (430), 10 states have internal predecessors, (430), 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) [2024-11-10 18:06:44,417 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:06:44,417 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:06:44,426 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 [2024-11-10 18:06:44,617 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 [2024-11-10 18:06:44,618 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-10 18:06:44,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:06:44,618 INFO L85 PathProgramCache]: Analyzing trace with hash 246820618, now seen corresponding path program 1 times [2024-11-10 18:06:44,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:06:44,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1496783997] [2024-11-10 18:06:44,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:06:44,619 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 18:06:44,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:06:44,621 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) [2024-11-10 18:06:44,622 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 [2024-11-10 18:06:44,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:06:44,815 INFO L255 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-10 18:06:44,817 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:06:44,823 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 [2024-11-10 18:06:44,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:06:44,855 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:06:44,855 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:06:44,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1496783997] [2024-11-10 18:06:44,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1496783997] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:06:44,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:06:44,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 18:06:44,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914450759] [2024-11-10 18:06:44,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:06:44,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:06:44,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:06:44,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:06:44,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:06:44,973 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 101 [2024-11-10 18:06:44,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 98 transitions, 361 flow. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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) [2024-11-10 18:06:44,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:06:44,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 101 [2024-11-10 18:06:44,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:06:45,268 INFO L124 PetriNetUnfolderBase]: 390/920 cut-off events. [2024-11-10 18:06:45,269 INFO L125 PetriNetUnfolderBase]: For 108/108 co-relation queries the response was YES. [2024-11-10 18:06:45,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1679 conditions, 920 events. 390/920 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5502 event pairs, 287 based on Foata normal form. 0/751 useless extension candidates. Maximal degree in co-relation 1593. Up to 608 conditions per place. [2024-11-10 18:06:45,279 INFO L140 encePairwiseOnDemand]: 96/101 looper letters, 39 selfloop transitions, 11 changer transitions 0/96 dead transitions. [2024-11-10 18:06:45,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 96 transitions, 457 flow [2024-11-10 18:06:45,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:06:45,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 18:06:45,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 265 transitions. [2024-11-10 18:06:45,283 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.655940594059406 [2024-11-10 18:06:45,283 INFO L175 Difference]: Start difference. First operand has 113 places, 98 transitions, 361 flow. Second operand 4 states and 265 transitions. [2024-11-10 18:06:45,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 96 transitions, 457 flow [2024-11-10 18:06:45,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 96 transitions, 453 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:06:45,287 INFO L231 Difference]: Finished difference. Result has 112 places, 96 transitions, 375 flow [2024-11-10 18:06:45,288 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=375, PETRI_PLACES=112, PETRI_TRANSITIONS=96} [2024-11-10 18:06:45,288 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 18 predicate places. [2024-11-10 18:06:45,289 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 96 transitions, 375 flow [2024-11-10 18:06:45,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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) [2024-11-10 18:06:45,290 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:06:45,290 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:06:45,298 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 [2024-11-10 18:06:45,490 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 [2024-11-10 18:06:45,491 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-10 18:06:45,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:06:45,491 INFO L85 PathProgramCache]: Analyzing trace with hash 246820619, now seen corresponding path program 1 times [2024-11-10 18:06:45,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:06:45,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [687269531] [2024-11-10 18:06:45,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:06:45,492 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 [2024-11-10 18:06:45,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:06:45,493 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) [2024-11-10 18:06:45,494 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 [2024-11-10 18:06:45,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:06:45,657 INFO L255 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-10 18:06:45,659 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:06:45,667 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 [2024-11-10 18:06:45,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:06:45,712 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:06:45,712 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:06:45,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [687269531] [2024-11-10 18:06:45,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [687269531] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:06:45,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:06:45,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 18:06:45,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149350082] [2024-11-10 18:06:45,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:06:45,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:06:45,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:06:45,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:06:45,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:06:45,848 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 101 [2024-11-10 18:06:45,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 96 transitions, 375 flow. Second operand has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 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) [2024-11-10 18:06:45,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:06:45,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 101 [2024-11-10 18:06:45,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:06:46,168 INFO L124 PetriNetUnfolderBase]: 390/912 cut-off events. [2024-11-10 18:06:46,168 INFO L125 PetriNetUnfolderBase]: For 164/164 co-relation queries the response was YES. [2024-11-10 18:06:46,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1673 conditions, 912 events. 390/912 cut-off events. For 164/164 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5464 event pairs, 287 based on Foata normal form. 8/751 useless extension candidates. Maximal degree in co-relation 1589. Up to 608 conditions per place. [2024-11-10 18:06:46,176 INFO L140 encePairwiseOnDemand]: 96/101 looper letters, 37 selfloop transitions, 11 changer transitions 0/94 dead transitions. [2024-11-10 18:06:46,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 94 transitions, 467 flow [2024-11-10 18:06:46,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:06:46,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 18:06:46,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 271 transitions. [2024-11-10 18:06:46,180 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6707920792079208 [2024-11-10 18:06:46,182 INFO L175 Difference]: Start difference. First operand has 112 places, 96 transitions, 375 flow. Second operand 4 states and 271 transitions. [2024-11-10 18:06:46,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 94 transitions, 467 flow [2024-11-10 18:06:46,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 94 transitions, 445 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 18:06:46,187 INFO L231 Difference]: Finished difference. Result has 110 places, 94 transitions, 371 flow [2024-11-10 18:06:46,187 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=371, PETRI_PLACES=110, PETRI_TRANSITIONS=94} [2024-11-10 18:06:46,188 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 16 predicate places. [2024-11-10 18:06:46,188 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 94 transitions, 371 flow [2024-11-10 18:06:46,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 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) [2024-11-10 18:06:46,188 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:06:46,188 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:06:46,197 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 (14)] Forceful destruction successful, exit code 0 [2024-11-10 18:06:46,390 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 [2024-11-10 18:06:46,390 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-10 18:06:46,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:06:46,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1330830042, now seen corresponding path program 1 times [2024-11-10 18:06:46,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:06:46,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1985863350] [2024-11-10 18:06:46,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:06:46,391 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 [2024-11-10 18:06:46,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:06:46,393 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) [2024-11-10 18:06:46,394 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 [2024-11-10 18:06:46,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:06:46,571 INFO L255 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 18:06:46,573 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:06:46,593 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:06:46,594 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:06:46,622 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:06:46,623 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:06:46,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1985863350] [2024-11-10 18:06:46,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1985863350] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:06:46,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-10 18:06:46,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-11-10 18:06:46,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466848375] [2024-11-10 18:06:46,623 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-10 18:06:46,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 18:06:46,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:06:46,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 18:06:46,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-10 18:06:46,625 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 101 [2024-11-10 18:06:46,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 94 transitions, 371 flow. Second operand has 6 states, 6 states have (on average 64.0) internal successors, (384), 6 states have internal predecessors, (384), 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) [2024-11-10 18:06:46,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:06:46,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 101 [2024-11-10 18:06:46,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:06:47,031 INFO L124 PetriNetUnfolderBase]: 390/968 cut-off events. [2024-11-10 18:06:47,032 INFO L125 PetriNetUnfolderBase]: For 269/269 co-relation queries the response was YES. [2024-11-10 18:06:47,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1823 conditions, 968 events. 390/968 cut-off events. For 269/269 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5493 event pairs, 287 based on Foata normal form. 6/801 useless extension candidates. Maximal degree in co-relation 1731. Up to 606 conditions per place. [2024-11-10 18:06:47,041 INFO L140 encePairwiseOnDemand]: 97/101 looper letters, 53 selfloop transitions, 11 changer transitions 0/109 dead transitions. [2024-11-10 18:06:47,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 109 transitions, 611 flow [2024-11-10 18:06:47,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 18:06:47,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 18:06:47,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 419 transitions. [2024-11-10 18:06:47,045 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6914191419141914 [2024-11-10 18:06:47,049 INFO L175 Difference]: Start difference. First operand has 110 places, 94 transitions, 371 flow. Second operand 6 states and 419 transitions. [2024-11-10 18:06:47,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 109 transitions, 611 flow [2024-11-10 18:06:47,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 109 transitions, 567 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 18:06:47,053 INFO L231 Difference]: Finished difference. Result has 116 places, 99 transitions, 431 flow [2024-11-10 18:06:47,057 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=431, PETRI_PLACES=116, PETRI_TRANSITIONS=99} [2024-11-10 18:06:47,057 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 22 predicate places. [2024-11-10 18:06:47,057 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 99 transitions, 431 flow [2024-11-10 18:06:47,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 64.0) internal successors, (384), 6 states have internal predecessors, (384), 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) [2024-11-10 18:06:47,058 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:06:47,058 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:06:47,066 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2024-11-10 18:06:47,258 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 [2024-11-10 18:06:47,259 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-10 18:06:47,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:06:47,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1690128788, now seen corresponding path program 1 times [2024-11-10 18:06:47,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:06:47,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1692778856] [2024-11-10 18:06:47,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:06:47,261 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 [2024-11-10 18:06:47,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:06:47,264 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) [2024-11-10 18:06:47,265 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 [2024-11-10 18:06:47,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:06:48,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-10 18:06:48,018 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:06:48,034 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 [2024-11-10 18:06:48,039 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 [2024-11-10 18:06:48,254 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 [2024-11-10 18:06:48,269 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 15 treesize of output 11 [2024-11-10 18:06:48,354 INFO L349 Elim1Store]: treesize reduction 29, result has 46.3 percent of original size [2024-11-10 18:06:48,355 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 22 treesize of output 29 [2024-11-10 18:06:48,405 INFO L349 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2024-11-10 18:06:48,405 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 28 treesize of output 30 [2024-11-10 18:06:48,460 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 [2024-11-10 18:06:48,472 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 34 treesize of output 27 [2024-11-10 18:06:48,516 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 [2024-11-10 18:06:48,529 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 34 treesize of output 27 [2024-11-10 18:06:48,567 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 26 treesize of output 19 [2024-11-10 18:06:48,574 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 16 treesize of output 11 [2024-11-10 18:06:48,611 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 17 treesize of output 9 [2024-11-10 18:06:48,637 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:06:48,637 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:06:48,921 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))) (and (forall ((v_ArrVal_583 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_584 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_583) |c_~#c~0.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_584) |c_~#c~0.base|) .cse0)))) (forall ((v_ArrVal_583 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_583) |c_~#c~0.base|) .cse0))) (bvule (bvadd (_ bv4 32) .cse1) (bvadd (_ bv8 32) .cse1)))))) is different from false [2024-11-10 18:06:49,217 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 18:06:49,217 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 [2024-11-10 18:06:49,234 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 18:06:49,235 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 [2024-11-10 18:06:49,264 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 18:06:49,264 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 [2024-11-10 18:06:49,305 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 18:06:49,306 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 [2024-11-10 18:06:49,323 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 [2024-11-10 18:06:49,337 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 [2024-11-10 18:06:50,126 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 18:06:50,127 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 [2024-11-10 18:06:50,147 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 18:06:50,147 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 [2024-11-10 18:06:50,161 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 [2024-11-10 18:06:52,985 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 156 treesize of output 152 [2024-11-10 18:06:52,995 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2024-11-10 18:06:52,997 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:06:52,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1692778856] [2024-11-10 18:06:52,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1692778856] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:06:52,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-10 18:06:52,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2024-11-10 18:06:52,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393986852] [2024-11-10 18:06:52,998 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-10 18:06:52,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-10 18:06:52,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:06:52,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-10 18:06:52,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=189, Unknown=13, NotChecked=28, Total=272 [2024-11-10 18:06:54,506 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 101 [2024-11-10 18:06:54,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 99 transitions, 431 flow. Second operand has 17 states, 17 states have (on average 17.235294117647058) internal successors, (293), 17 states have internal predecessors, (293), 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) [2024-11-10 18:06:54,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:06:54,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 101 [2024-11-10 18:06:54,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:06:58,835 INFO L124 PetriNetUnfolderBase]: 2199/3552 cut-off events. [2024-11-10 18:06:58,835 INFO L125 PetriNetUnfolderBase]: For 218/218 co-relation queries the response was YES. [2024-11-10 18:06:58,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7271 conditions, 3552 events. 2199/3552 cut-off events. For 218/218 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 20100 event pairs, 1920 based on Foata normal form. 6/2060 useless extension candidates. Maximal degree in co-relation 7182. Up to 3399 conditions per place. [2024-11-10 18:06:58,879 INFO L140 encePairwiseOnDemand]: 90/101 looper letters, 67 selfloop transitions, 24 changer transitions 0/104 dead transitions. [2024-11-10 18:06:58,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 104 transitions, 627 flow [2024-11-10 18:06:58,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 18:06:58,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-10 18:06:58,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 271 transitions. [2024-11-10 18:06:58,884 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2063975628332064 [2024-11-10 18:06:58,884 INFO L175 Difference]: Start difference. First operand has 116 places, 99 transitions, 431 flow. Second operand 13 states and 271 transitions. [2024-11-10 18:06:58,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 104 transitions, 627 flow [2024-11-10 18:06:58,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 104 transitions, 609 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-11-10 18:06:58,889 INFO L231 Difference]: Finished difference. Result has 129 places, 101 transitions, 475 flow [2024-11-10 18:06:58,890 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=475, PETRI_PLACES=129, PETRI_TRANSITIONS=101} [2024-11-10 18:06:58,890 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 35 predicate places. [2024-11-10 18:06:58,891 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 101 transitions, 475 flow [2024-11-10 18:06:58,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 17.235294117647058) internal successors, (293), 17 states have internal predecessors, (293), 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) [2024-11-10 18:06:58,891 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:06:58,891 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:06:58,903 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2024-11-10 18:06:59,092 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 [2024-11-10 18:06:59,092 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-10 18:06:59,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:06:59,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1690128787, now seen corresponding path program 1 times [2024-11-10 18:06:59,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:06:59,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [90588065] [2024-11-10 18:06:59,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:06:59,094 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 [2024-11-10 18:06:59,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:06:59,095 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) [2024-11-10 18:06:59,096 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 [2024-11-10 18:06:59,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:06:59,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-10 18:06:59,989 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:07:00,004 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 [2024-11-10 18:07:00,164 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 [2024-11-10 18:07:00,243 INFO L349 Elim1Store]: treesize reduction 90, result has 30.2 percent of original size [2024-11-10 18:07:00,244 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 36 treesize of output 52 [2024-11-10 18:07:00,292 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 [2024-11-10 18:07:00,350 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 [2024-11-10 18:07:00,380 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 [2024-11-10 18:07:00,417 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 19 treesize of output 11 [2024-11-10 18:07:00,439 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:07:00,439 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:07:00,723 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 18:07:00,723 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 [2024-11-10 18:07:00,748 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 18:07:00,749 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 [2024-11-10 18:07:00,761 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 [2024-11-10 18:07:02,159 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:07:02,159 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:07:02,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [90588065] [2024-11-10 18:07:02,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [90588065] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:07:02,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-10 18:07:02,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2024-11-10 18:07:02,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454014341] [2024-11-10 18:07:02,160 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-10 18:07:02,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-10 18:07:02,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:07:02,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-10 18:07:02,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=210, Unknown=15, NotChecked=0, Total=272 [2024-11-10 18:07:06,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 18:07:08,442 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 101 [2024-11-10 18:07:08,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 101 transitions, 475 flow. Second operand has 17 states, 17 states have (on average 23.235294117647058) internal successors, (395), 17 states have internal predecessors, (395), 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) [2024-11-10 18:07:08,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:07:08,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 101 [2024-11-10 18:07:08,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:07:11,725 INFO L124 PetriNetUnfolderBase]: 1518/2673 cut-off events. [2024-11-10 18:07:11,726 INFO L125 PetriNetUnfolderBase]: For 273/273 co-relation queries the response was YES. [2024-11-10 18:07:11,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5380 conditions, 2673 events. 1518/2673 cut-off events. For 273/273 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 15965 event pairs, 1287 based on Foata normal form. 0/1812 useless extension candidates. Maximal degree in co-relation 5281. Up to 2340 conditions per place. [2024-11-10 18:07:11,756 INFO L140 encePairwiseOnDemand]: 92/101 looper letters, 62 selfloop transitions, 22 changer transitions 0/103 dead transitions. [2024-11-10 18:07:11,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 103 transitions, 649 flow [2024-11-10 18:07:11,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 18:07:11,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-10 18:07:11,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 300 transitions. [2024-11-10 18:07:11,761 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.27002700270027 [2024-11-10 18:07:11,761 INFO L175 Difference]: Start difference. First operand has 129 places, 101 transitions, 475 flow. Second operand 11 states and 300 transitions. [2024-11-10 18:07:11,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 103 transitions, 649 flow [2024-11-10 18:07:11,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 103 transitions, 596 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-11-10 18:07:11,768 INFO L231 Difference]: Finished difference. Result has 128 places, 100 transitions, 462 flow [2024-11-10 18:07:11,769 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=462, PETRI_PLACES=128, PETRI_TRANSITIONS=100} [2024-11-10 18:07:11,770 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 34 predicate places. [2024-11-10 18:07:11,770 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 100 transitions, 462 flow [2024-11-10 18:07:11,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 23.235294117647058) internal successors, (395), 17 states have internal predecessors, (395), 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) [2024-11-10 18:07:11,771 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:07:11,771 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 18:07:11,785 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 (17)] Forceful destruction successful, exit code 0 [2024-11-10 18:07:11,971 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 [2024-11-10 18:07:11,972 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-10 18:07:11,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:07:11,972 INFO L85 PathProgramCache]: Analyzing trace with hash 558530965, now seen corresponding path program 2 times [2024-11-10 18:07:11,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:07:11,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [464570887] [2024-11-10 18:07:11,973 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 18:07:11,974 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 18:07:11,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:07:11,978 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) [2024-11-10 18:07:11,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2024-11-10 18:07:12,788 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 18:07:12,788 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:07:12,816 INFO L255 TraceCheckSpWp]: Trace formula consists of 837 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 18:07:12,818 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:07:12,986 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 3 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:07:12,987 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:07:13,263 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 3 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:07:13,264 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:07:13,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [464570887] [2024-11-10 18:07:13,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [464570887] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:07:13,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-10 18:07:13,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2024-11-10 18:07:13,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743549504] [2024-11-10 18:07:13,264 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-10 18:07:13,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 18:07:13,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:07:13,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 18:07:13,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-11-10 18:07:13,267 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 101 [2024-11-10 18:07:13,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 100 transitions, 462 flow. Second operand has 12 states, 12 states have (on average 65.0) internal successors, (780), 12 states have internal predecessors, (780), 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) [2024-11-10 18:07:13,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:07:13,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 101 [2024-11-10 18:07:13,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:07:14,908 INFO L124 PetriNetUnfolderBase]: 390/1088 cut-off events. [2024-11-10 18:07:14,909 INFO L125 PetriNetUnfolderBase]: For 817/817 co-relation queries the response was YES. [2024-11-10 18:07:14,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2311 conditions, 1088 events. 390/1088 cut-off events. For 817/817 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5472 event pairs, 287 based on Foata normal form. 12/933 useless extension candidates. Maximal degree in co-relation 2226. Up to 606 conditions per place. [2024-11-10 18:07:14,917 INFO L140 encePairwiseOnDemand]: 97/101 looper letters, 83 selfloop transitions, 23 changer transitions 0/152 dead transitions. [2024-11-10 18:07:14,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 152 transitions, 1138 flow [2024-11-10 18:07:14,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 18:07:14,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-10 18:07:14,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 818 transitions. [2024-11-10 18:07:14,922 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6749174917491749 [2024-11-10 18:07:14,922 INFO L175 Difference]: Start difference. First operand has 128 places, 100 transitions, 462 flow. Second operand 12 states and 818 transitions. [2024-11-10 18:07:14,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 152 transitions, 1138 flow [2024-11-10 18:07:14,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 152 transitions, 990 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-11-10 18:07:14,928 INFO L231 Difference]: Finished difference. Result has 136 places, 113 transitions, 647 flow [2024-11-10 18:07:14,929 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=647, PETRI_PLACES=136, PETRI_TRANSITIONS=113} [2024-11-10 18:07:14,929 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 42 predicate places. [2024-11-10 18:07:14,930 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 113 transitions, 647 flow [2024-11-10 18:07:14,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 65.0) internal successors, (780), 12 states have internal predecessors, (780), 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) [2024-11-10 18:07:14,930 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:07:14,930 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 18:07:14,951 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2024-11-10 18:07:15,131 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 [2024-11-10 18:07:15,131 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-10 18:07:15,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:07:15,132 INFO L85 PathProgramCache]: Analyzing trace with hash 400139699, now seen corresponding path program 3 times [2024-11-10 18:07:15,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:07:15,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1323367577] [2024-11-10 18:07:15,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 18:07:15,133 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 [2024-11-10 18:07:15,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:07:15,134 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) [2024-11-10 18:07:15,135 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 [2024-11-10 18:07:34,442 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-10 18:07:34,442 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:07:34,547 INFO L255 TraceCheckSpWp]: Trace formula consists of 1647 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-10 18:07:34,550 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:07:34,967 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 3 proven. 470 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:07:34,967 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:07:35,921 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 3 proven. 470 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:07:35,921 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:07:35,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1323367577] [2024-11-10 18:07:35,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1323367577] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:07:35,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-10 18:07:35,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2024-11-10 18:07:35,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239870741] [2024-11-10 18:07:35,921 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-10 18:07:35,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-10 18:07:35,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:07:35,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-10 18:07:35,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2024-11-10 18:07:35,925 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 101 [2024-11-10 18:07:35,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 113 transitions, 647 flow. Second operand has 24 states, 24 states have (on average 65.5) internal successors, (1572), 24 states have internal predecessors, (1572), 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) [2024-11-10 18:07:35,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:07:35,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 101 [2024-11-10 18:07:35,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand