./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/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 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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-dev-84cfde4 [2024-10-11 19:44:37,122 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:44:37,188 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 19:44:37,192 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:44:37,194 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:44:37,217 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:44:37,217 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:44:37,218 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:44:37,218 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:44:37,220 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:44:37,220 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:44:37,220 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:44:37,221 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:44:37,221 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:44:37,222 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:44:37,223 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:44:37,223 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:44:37,223 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:44:37,223 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:44:37,223 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:44:37,224 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:44:37,225 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:44:37,226 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:44:37,226 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:44:37,226 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:44:37,226 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:44:37,226 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:44:37,227 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:44:37,227 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:44:37,227 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:44:37,227 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:44:37,227 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:44:37,227 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:44:37,228 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:44:37,228 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:44:37,228 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:44:37,228 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 19:44:37,228 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 19:44:37,228 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:44:37,228 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:44:37,229 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:44:37,229 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:44:37,229 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52746884466210ec366bc04a3a6cb03f413619353c73143d79c1024e676e598e [2024-10-11 19:44:37,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:44:37,437 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:44:37,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:44:37,441 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:44:37,441 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:44:37,442 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i [2024-10-11 19:44:38,717 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:44:38,915 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:44:38,916 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i [2024-10-11 19:44:38,930 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/9bc0176c5/d62e1d7f969549d0b43cb9b6f0c56382/FLAG4ee2e6a77 [2024-10-11 19:44:38,946 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/9bc0176c5/d62e1d7f969549d0b43cb9b6f0c56382 [2024-10-11 19:44:38,948 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:44:38,950 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:44:38,951 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:44:38,951 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:44:38,957 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:44:38,957 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:44:38" (1/1) ... [2024-10-11 19:44:38,959 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@473bb486 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:44:38, skipping insertion in model container [2024-10-11 19:44:38,959 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:44:38" (1/1) ... [2024-10-11 19:44:38,994 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:44:39,284 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-11 19:44:39,285 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-11 19:44:39,285 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-11 19:44:39,286 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-11 19:44:39,308 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:44:39,326 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-10-11 19:44:39,327 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4521ace8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:44:39, skipping insertion in model container [2024-10-11 19:44:39,327 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:44:39,327 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-11 19:44:39,329 INFO L158 Benchmark]: Toolchain (without parser) took 378.85ms. Allocated memory is still 127.9MB. Free memory was 72.7MB in the beginning and 55.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-10-11 19:44:39,330 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 127.9MB. Free memory is still 89.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 19:44:39,330 INFO L158 Benchmark]: CACSL2BoogieTranslator took 376.41ms. Allocated memory is still 127.9MB. Free memory was 72.7MB in the beginning and 55.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-10-11 19:44:39,331 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 127.9MB. Free memory is still 89.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 376.41ms. Allocated memory is still 127.9MB. Free memory was 72.7MB in the beginning and 55.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. 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/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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-dev-84cfde4 [2024-10-11 19:44:40,921 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:44:40,985 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-11 19:44:40,989 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:44:40,990 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:44:41,013 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:44:41,015 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:44:41,016 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:44:41,016 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:44:41,019 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:44:41,019 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:44:41,020 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:44:41,020 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:44:41,020 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:44:41,021 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:44:41,021 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:44:41,021 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:44:41,021 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:44:41,021 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:44:41,022 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:44:41,022 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:44:41,023 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:44:41,024 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:44:41,024 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:44:41,024 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:44:41,024 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-11 19:44:41,024 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:44:41,025 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-11 19:44:41,025 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:44:41,025 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:44:41,026 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:44:41,026 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:44:41,026 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:44:41,027 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:44:41,027 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:44:41,027 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:44:41,027 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:44:41,028 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:44:41,028 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-11 19:44:41,028 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-11 19:44:41,028 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:44:41,029 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:44:41,029 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:44:41,029 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:44:41,029 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-11 19:44:41,029 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52746884466210ec366bc04a3a6cb03f413619353c73143d79c1024e676e598e [2024-10-11 19:44:41,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:44:41,293 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:44:41,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:44:41,296 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:44:41,296 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:44:41,298 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i [2024-10-11 19:44:42,501 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:44:42,720 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:44:42,721 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i [2024-10-11 19:44:42,734 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/be872fa16/8307f68600304940a0400ac32ab65767/FLAGba5ea4ac1 [2024-10-11 19:44:42,746 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/be872fa16/8307f68600304940a0400ac32ab65767 [2024-10-11 19:44:42,748 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:44:42,749 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:44:42,750 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:44:42,750 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:44:42,754 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:44:42,754 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:44:42" (1/1) ... [2024-10-11 19:44:42,756 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c6696cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:44:42, skipping insertion in model container [2024-10-11 19:44:42,757 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:44:42" (1/1) ... [2024-10-11 19:44:42,798 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:44:43,158 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-11 19:44:43,159 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-11 19:44:43,159 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-11 19:44:43,161 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-11 19:44:43,187 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:44:43,208 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-11 19:44:43,217 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:44:43,253 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-11 19:44:43,254 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-11 19:44:43,254 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-11 19:44:43,254 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-11 19:44:43,261 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:44:43,274 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 19:44:43,307 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-11 19:44:43,309 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-11 19:44:43,309 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-11 19:44:43,310 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-11 19:44:43,316 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:44:43,381 INFO L204 MainTranslator]: Completed translation [2024-10-11 19:44:43,381 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:44:43 WrapperNode [2024-10-11 19:44:43,382 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:44:43,383 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 19:44:43,383 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 19:44:43,383 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 19:44:43,388 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:44:43" (1/1) ... [2024-10-11 19:44:43,412 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:44:43" (1/1) ... [2024-10-11 19:44:43,440 INFO L138 Inliner]: procedures = 274, calls = 25, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 113 [2024-10-11 19:44:43,443 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 19:44:43,444 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 19:44:43,445 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 19:44:43,445 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 19:44:43,453 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:44:43" (1/1) ... [2024-10-11 19:44:43,453 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:44:43" (1/1) ... [2024-10-11 19:44:43,456 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:44:43" (1/1) ... [2024-10-11 19:44:43,479 INFO L175 MemorySlicer]: Split 16 memory accesses to 1 slices as follows [16]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 12 writes are split as follows [12]. [2024-10-11 19:44:43,480 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:44:43" (1/1) ... [2024-10-11 19:44:43,481 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:44:43" (1/1) ... [2024-10-11 19:44:43,489 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:44:43" (1/1) ... [2024-10-11 19:44:43,497 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:44:43" (1/1) ... [2024-10-11 19:44:43,498 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:44:43" (1/1) ... [2024-10-11 19:44:43,500 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:44:43" (1/1) ... [2024-10-11 19:44:43,504 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 19:44:43,505 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 19:44:43,505 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 19:44:43,505 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 19:44:43,506 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:44:43" (1/1) ... [2024-10-11 19:44:43,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:44:43,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:44:43,533 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 19:44:43,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 19:44:43,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-11 19:44:43,569 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-10-11 19:44:43,569 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-10-11 19:44:43,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-11 19:44:43,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-11 19:44:43,570 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-11 19:44:43,570 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-11 19:44:43,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 19:44:43,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 19:44:43,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-11 19:44:43,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 19:44:43,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 19:44:43,571 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 19:44:43,709 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 19:44:43,714 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 19:44:44,071 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 19:44:44,071 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 19:44:44,204 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 19:44:44,204 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-11 19:44:44,205 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:44:44 BoogieIcfgContainer [2024-10-11 19:44:44,205 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 19:44:44,206 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 19:44:44,207 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 19:44:44,209 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 19:44:44,209 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:44:42" (1/3) ... [2024-10-11 19:44:44,210 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16cca7e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:44:44, skipping insertion in model container [2024-10-11 19:44:44,210 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:44:43" (2/3) ... [2024-10-11 19:44:44,210 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16cca7e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:44:44, skipping insertion in model container [2024-10-11 19:44:44,210 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:44:44" (3/3) ... [2024-10-11 19:44:44,211 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_21-arrayloop2_nr.i [2024-10-11 19:44:44,222 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 19:44:44,223 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 29 error locations. [2024-10-11 19:44:44,223 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 19:44:44,293 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 19:44:44,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 85 transitions, 178 flow [2024-10-11 19:44:44,352 INFO L124 PetriNetUnfolderBase]: 6/83 cut-off events. [2024-10-11 19:44:44,354 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:44:44,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 83 events. 6/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 333 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2024-10-11 19:44:44,358 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 85 transitions, 178 flow [2024-10-11 19:44:44,360 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 83 transitions, 172 flow [2024-10-11 19:44:44,370 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:44:44,377 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;@2946688d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:44:44,378 INFO L334 AbstractCegarLoop]: Starting to check reachability of 47 error locations. [2024-10-11 19:44:44,380 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:44:44,381 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-11 19:44:44,381 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:44:44,381 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:44:44,381 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:44:44,382 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-11 19:44:44,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:44:44,386 INFO L85 PathProgramCache]: Analyzing trace with hash 359158, now seen corresponding path program 1 times [2024-10-11 19:44:44,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:44:44,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1150566947] [2024-10-11 19:44:44,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:44:44,395 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:44:44,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:44:44,397 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:44:44,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-11 19:44:44,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:44:44,464 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 19:44:44,467 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:44:44,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:44:44,524 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:44:44,525 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:44:44,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1150566947] [2024-10-11 19:44:44,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1150566947] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:44:44,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:44:44,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:44:44,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664930439] [2024-10-11 19:44:44,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:44:44,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:44:44,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:44:44,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:44:44,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:44:44,714 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 85 [2024-10-11 19:44:44,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 83 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:44:44,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:44:44,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 85 [2024-10-11 19:44:44,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:44:45,008 INFO L124 PetriNetUnfolderBase]: 482/954 cut-off events. [2024-10-11 19:44:45,009 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-11 19:44:45,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1731 conditions, 954 events. 482/954 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5139 event pairs, 368 based on Foata normal form. 1/856 useless extension candidates. Maximal degree in co-relation 1678. Up to 752 conditions per place. [2024-10-11 19:44:45,016 INFO L140 encePairwiseOnDemand]: 78/85 looper letters, 34 selfloop transitions, 3 changer transitions 0/79 dead transitions. [2024-10-11 19:44:45,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 79 transitions, 238 flow [2024-10-11 19:44:45,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:44:45,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:44:45,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 217 transitions. [2024-10-11 19:44:45,026 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.638235294117647 [2024-10-11 19:44:45,027 INFO L175 Difference]: Start difference. First operand has 84 places, 83 transitions, 172 flow. Second operand 4 states and 217 transitions. [2024-10-11 19:44:45,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 79 transitions, 238 flow [2024-10-11 19:44:45,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 79 transitions, 236 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:44:45,033 INFO L231 Difference]: Finished difference. Result has 81 places, 79 transitions, 168 flow [2024-10-11 19:44:45,034 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=81, PETRI_TRANSITIONS=79} [2024-10-11 19:44:45,039 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, -3 predicate places. [2024-10-11 19:44:45,039 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 79 transitions, 168 flow [2024-10-11 19:44:45,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:44:45,040 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:44:45,040 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:44:45,043 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-10-11 19:44:45,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:44:45,243 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-11 19:44:45,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:44:45,243 INFO L85 PathProgramCache]: Analyzing trace with hash 359159, now seen corresponding path program 1 times [2024-10-11 19:44:45,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:44:45,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [504211041] [2024-10-11 19:44:45,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:44:45,244 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:44:45,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:44:45,246 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:44:45,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-11 19:44:45,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:44:45,297 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 19:44:45,298 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:44:45,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:44:45,342 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:44:45,342 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:44:45,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [504211041] [2024-10-11 19:44:45,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [504211041] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:44:45,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:44:45,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:44:45,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187940975] [2024-10-11 19:44:45,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:44:45,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:44:45,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:44:45,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:44:45,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:44:45,470 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 85 [2024-10-11 19:44:45,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 79 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:44:45,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:44:45,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 85 [2024-10-11 19:44:45,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:44:45,705 INFO L124 PetriNetUnfolderBase]: 483/959 cut-off events. [2024-10-11 19:44:45,706 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 19:44:45,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1746 conditions, 959 events. 483/959 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5062 event pairs, 368 based on Foata normal form. 3/864 useless extension candidates. Maximal degree in co-relation 1718. Up to 757 conditions per place. [2024-10-11 19:44:45,713 INFO L140 encePairwiseOnDemand]: 77/85 looper letters, 38 selfloop transitions, 5 changer transitions 0/83 dead transitions. [2024-10-11 19:44:45,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 83 transitions, 266 flow [2024-10-11 19:44:45,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:44:45,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:44:45,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 230 transitions. [2024-10-11 19:44:45,719 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6764705882352942 [2024-10-11 19:44:45,720 INFO L175 Difference]: Start difference. First operand has 81 places, 79 transitions, 168 flow. Second operand 4 states and 230 transitions. [2024-10-11 19:44:45,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 83 transitions, 266 flow [2024-10-11 19:44:45,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 83 transitions, 256 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 19:44:45,722 INFO L231 Difference]: Finished difference. Result has 83 places, 83 transitions, 201 flow [2024-10-11 19:44:45,723 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=201, PETRI_PLACES=83, PETRI_TRANSITIONS=83} [2024-10-11 19:44:45,723 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, -1 predicate places. [2024-10-11 19:44:45,723 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 83 transitions, 201 flow [2024-10-11 19:44:45,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:44:45,724 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:44:45,724 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-11 19:44:45,727 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-10-11 19:44:45,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:44:45,925 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-11 19:44:45,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:44:45,925 INFO L85 PathProgramCache]: Analyzing trace with hash 2110054030, now seen corresponding path program 1 times [2024-10-11 19:44:45,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:44:45,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [742004162] [2024-10-11 19:44:45,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:44:45,926 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:44:45,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:44:45,929 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:44:45,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-11 19:44:45,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:44:45,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 19:44:45,990 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:44:46,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-11 19:44:46,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:44:46,086 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:44:46,086 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:44:46,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [742004162] [2024-10-11 19:44:46,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [742004162] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:44:46,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:44:46,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:44:46,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313439955] [2024-10-11 19:44:46,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:44:46,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:44:46,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:44:46,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:44:46,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:44:46,181 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 85 [2024-10-11 19:44:46,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 83 transitions, 201 flow. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:44:46,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:44:46,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 85 [2024-10-11 19:44:46,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:44:46,377 INFO L124 PetriNetUnfolderBase]: 483/958 cut-off events. [2024-10-11 19:44:46,381 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-11 19:44:46,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1754 conditions, 958 events. 483/958 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5053 event pairs, 368 based on Foata normal form. 0/859 useless extension candidates. Maximal degree in co-relation 1724. Up to 753 conditions per place. [2024-10-11 19:44:46,389 INFO L140 encePairwiseOnDemand]: 82/85 looper letters, 36 selfloop transitions, 3 changer transitions 0/82 dead transitions. [2024-10-11 19:44:46,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 82 transitions, 277 flow [2024-10-11 19:44:46,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:44:46,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:44:46,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 183 transitions. [2024-10-11 19:44:46,391 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7176470588235294 [2024-10-11 19:44:46,391 INFO L175 Difference]: Start difference. First operand has 83 places, 83 transitions, 201 flow. Second operand 3 states and 183 transitions. [2024-10-11 19:44:46,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 82 transitions, 277 flow [2024-10-11 19:44:46,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 82 transitions, 274 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:44:46,393 INFO L231 Difference]: Finished difference. Result has 83 places, 82 transitions, 202 flow [2024-10-11 19:44:46,393 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=83, PETRI_TRANSITIONS=82} [2024-10-11 19:44:46,394 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, -1 predicate places. [2024-10-11 19:44:46,394 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 82 transitions, 202 flow [2024-10-11 19:44:46,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:44:46,397 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:44:46,397 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-11 19:44:46,400 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-10-11 19:44:46,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:44:46,601 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-11 19:44:46,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:44:46,601 INFO L85 PathProgramCache]: Analyzing trace with hash 2110054029, now seen corresponding path program 1 times [2024-10-11 19:44:46,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:44:46,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1180603888] [2024-10-11 19:44:46,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:44:46,602 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:44:46,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:44:46,603 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:44:46,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-11 19:44:46,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:44:46,657 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 19:44:46,658 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:44:46,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 19:44:46,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:44:46,672 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:44:46,672 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:44:46,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1180603888] [2024-10-11 19:44:46,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1180603888] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:44:46,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:44:46,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:44:46,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780314352] [2024-10-11 19:44:46,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:44:46,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:44:46,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:44:46,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:44:46,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:44:46,726 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 85 [2024-10-11 19:44:46,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 82 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:44:46,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:44:46,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 85 [2024-10-11 19:44:46,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:44:46,882 INFO L124 PetriNetUnfolderBase]: 483/957 cut-off events. [2024-10-11 19:44:46,882 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-11 19:44:46,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1754 conditions, 957 events. 483/957 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5040 event pairs, 368 based on Foata normal form. 0/860 useless extension candidates. Maximal degree in co-relation 1723. Up to 753 conditions per place. [2024-10-11 19:44:46,886 INFO L140 encePairwiseOnDemand]: 82/85 looper letters, 36 selfloop transitions, 3 changer transitions 0/81 dead transitions. [2024-10-11 19:44:46,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 81 transitions, 278 flow [2024-10-11 19:44:46,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:44:46,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:44:46,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 183 transitions. [2024-10-11 19:44:46,887 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7176470588235294 [2024-10-11 19:44:46,887 INFO L175 Difference]: Start difference. First operand has 83 places, 82 transitions, 202 flow. Second operand 3 states and 183 transitions. [2024-10-11 19:44:46,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 81 transitions, 278 flow [2024-10-11 19:44:46,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 81 transitions, 272 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:44:46,889 INFO L231 Difference]: Finished difference. Result has 82 places, 81 transitions, 200 flow [2024-10-11 19:44:46,889 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=82, PETRI_TRANSITIONS=81} [2024-10-11 19:44:46,890 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, -2 predicate places. [2024-10-11 19:44:46,890 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 81 transitions, 200 flow [2024-10-11 19:44:46,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:44:46,890 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:44:46,890 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:44:46,894 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-10-11 19:44:47,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:44:47,091 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-11 19:44:47,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:44:47,092 INFO L85 PathProgramCache]: Analyzing trace with hash 987165831, now seen corresponding path program 1 times [2024-10-11 19:44:47,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:44:47,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [875161274] [2024-10-11 19:44:47,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:44:47,093 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:44:47,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:44:47,095 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:44:47,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-10-11 19:44:47,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:44:47,162 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 19:44:47,163 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:44:47,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-11 19:44:47,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:44:47,186 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:44:47,186 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:44:47,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [875161274] [2024-10-11 19:44:47,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [875161274] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:44:47,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:44:47,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:44:47,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126188713] [2024-10-11 19:44:47,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:44:47,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:44:47,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:44:47,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:44:47,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:44:47,270 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 85 [2024-10-11 19:44:47,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 81 transitions, 200 flow. Second operand has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:44:47,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:44:47,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 85 [2024-10-11 19:44:47,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:44:47,469 INFO L124 PetriNetUnfolderBase]: 483/955 cut-off events. [2024-10-11 19:44:47,469 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-11 19:44:47,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1754 conditions, 955 events. 483/955 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5030 event pairs, 368 based on Foata normal form. 2/861 useless extension candidates. Maximal degree in co-relation 1721. Up to 755 conditions per place. [2024-10-11 19:44:47,472 INFO L140 encePairwiseOnDemand]: 80/85 looper letters, 37 selfloop transitions, 4 changer transitions 0/79 dead transitions. [2024-10-11 19:44:47,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 79 transitions, 278 flow [2024-10-11 19:44:47,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:44:47,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:44:47,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 219 transitions. [2024-10-11 19:44:47,474 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6441176470588236 [2024-10-11 19:44:47,474 INFO L175 Difference]: Start difference. First operand has 82 places, 81 transitions, 200 flow. Second operand 4 states and 219 transitions. [2024-10-11 19:44:47,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 79 transitions, 278 flow [2024-10-11 19:44:47,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 79 transitions, 272 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:44:47,477 INFO L231 Difference]: Finished difference. Result has 81 places, 79 transitions, 198 flow [2024-10-11 19:44:47,477 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=198, PETRI_PLACES=81, PETRI_TRANSITIONS=79} [2024-10-11 19:44:47,478 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, -3 predicate places. [2024-10-11 19:44:47,478 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 79 transitions, 198 flow [2024-10-11 19:44:47,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:44:47,478 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:44:47,478 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:44:47,482 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-10-11 19:44:47,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:44:47,679 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-11 19:44:47,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:44:47,680 INFO L85 PathProgramCache]: Analyzing trace with hash 987165830, now seen corresponding path program 1 times [2024-10-11 19:44:47,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:44:47,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1220919233] [2024-10-11 19:44:47,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:44:47,680 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:44:47,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:44:47,683 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:44:47,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-10-11 19:44:47,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:44:47,744 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 19:44:47,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:44:47,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 19:44:47,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:44:47,764 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:44:47,764 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:44:47,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1220919233] [2024-10-11 19:44:47,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1220919233] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:44:47,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:44:47,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:44:47,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327296951] [2024-10-11 19:44:47,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:44:47,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:44:47,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:44:47,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:44:47,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:44:47,863 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 85 [2024-10-11 19:44:47,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 79 transitions, 198 flow. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:44:47,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:44:47,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 85 [2024-10-11 19:44:47,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:44:48,069 INFO L124 PetriNetUnfolderBase]: 483/953 cut-off events. [2024-10-11 19:44:48,069 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 19:44:48,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1754 conditions, 953 events. 483/953 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4998 event pairs, 368 based on Foata normal form. 1/860 useless extension candidates. Maximal degree in co-relation 1722. Up to 753 conditions per place. [2024-10-11 19:44:48,074 INFO L140 encePairwiseOnDemand]: 78/85 looper letters, 34 selfloop transitions, 7 changer transitions 0/77 dead transitions. [2024-10-11 19:44:48,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 77 transitions, 276 flow [2024-10-11 19:44:48,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:44:48,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:44:48,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 254 transitions. [2024-10-11 19:44:48,075 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5976470588235294 [2024-10-11 19:44:48,075 INFO L175 Difference]: Start difference. First operand has 81 places, 79 transitions, 198 flow. Second operand 5 states and 254 transitions. [2024-10-11 19:44:48,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 77 transitions, 276 flow [2024-10-11 19:44:48,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 77 transitions, 268 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 19:44:48,077 INFO L231 Difference]: Finished difference. Result has 80 places, 77 transitions, 200 flow [2024-10-11 19:44:48,077 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=200, PETRI_PLACES=80, PETRI_TRANSITIONS=77} [2024-10-11 19:44:48,078 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, -4 predicate places. [2024-10-11 19:44:48,078 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 77 transitions, 200 flow [2024-10-11 19:44:48,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:44:48,079 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:44:48,079 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-10-11 19:44:48,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2024-10-11 19:44:48,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:44:48,280 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-11 19:44:48,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:44:48,280 INFO L85 PathProgramCache]: Analyzing trace with hash 987167839, now seen corresponding path program 1 times [2024-10-11 19:44:48,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:44:48,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [100317051] [2024-10-11 19:44:48,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:44:48,281 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:44:48,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:44:48,284 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:44:48,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-10-11 19:44:48,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:44:48,332 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-11 19:44:48,332 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:44:48,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:44:48,338 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:44:48,339 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:44:48,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [100317051] [2024-10-11 19:44:48,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [100317051] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:44:48,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:44:48,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:44:48,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107871910] [2024-10-11 19:44:48,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:44:48,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:44:48,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:44:48,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:44:48,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:44:48,340 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 85 [2024-10-11 19:44:48,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 77 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:44:48,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:44:48,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 85 [2024-10-11 19:44:48,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:44:48,533 INFO L124 PetriNetUnfolderBase]: 482/971 cut-off events. [2024-10-11 19:44:48,533 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-11 19:44:48,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1780 conditions, 971 events. 482/971 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5049 event pairs, 368 based on Foata normal form. 2/871 useless extension candidates. Maximal degree in co-relation 1749. Up to 753 conditions per place. [2024-10-11 19:44:48,536 INFO L140 encePairwiseOnDemand]: 82/85 looper letters, 40 selfloop transitions, 3 changer transitions 0/81 dead transitions. [2024-10-11 19:44:48,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 81 transitions, 300 flow [2024-10-11 19:44:48,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:44:48,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:44:48,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 191 transitions. [2024-10-11 19:44:48,540 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7490196078431373 [2024-10-11 19:44:48,540 INFO L175 Difference]: Start difference. First operand has 80 places, 77 transitions, 200 flow. Second operand 3 states and 191 transitions. [2024-10-11 19:44:48,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 81 transitions, 300 flow [2024-10-11 19:44:48,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 81 transitions, 280 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 19:44:48,543 INFO L231 Difference]: Finished difference. Result has 79 places, 77 transitions, 197 flow [2024-10-11 19:44:48,543 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=197, PETRI_PLACES=79, PETRI_TRANSITIONS=77} [2024-10-11 19:44:48,544 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, -5 predicate places. [2024-10-11 19:44:48,544 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 77 transitions, 197 flow [2024-10-11 19:44:48,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:44:48,544 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:44:48,544 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:44:48,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2024-10-11 19:44:48,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:44:48,745 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-11 19:44:48,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:44:48,745 INFO L85 PathProgramCache]: Analyzing trace with hash -521400729, now seen corresponding path program 1 times [2024-10-11 19:44:48,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:44:48,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2038465386] [2024-10-11 19:44:48,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:44:48,746 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:44:48,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:44:48,747 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:44:48,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-10-11 19:44:48,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:44:48,853 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 19:44:48,854 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:44:48,911 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-10-11 19:44:48,911 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 1 case distinctions, treesize of input 14 treesize of output 20 [2024-10-11 19:44:48,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:44:48,972 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:44:48,972 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:44:48,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2038465386] [2024-10-11 19:44:48,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2038465386] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:44:48,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:44:48,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:44:48,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763863242] [2024-10-11 19:44:48,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:44:48,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:44:48,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:44:48,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:44:48,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:44:49,139 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 85 [2024-10-11 19:44:49,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 77 transitions, 197 flow. Second operand has 5 states, 5 states have (on average 46.4) internal successors, (232), 5 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:44:49,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:44:49,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 85 [2024-10-11 19:44:49,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:44:49,349 INFO L124 PetriNetUnfolderBase]: 482/967 cut-off events. [2024-10-11 19:44:49,350 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-10-11 19:44:49,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1772 conditions, 967 events. 482/967 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5029 event pairs, 368 based on Foata normal form. 2/871 useless extension candidates. Maximal degree in co-relation 1742. Up to 750 conditions per place. [2024-10-11 19:44:49,353 INFO L140 encePairwiseOnDemand]: 79/85 looper letters, 33 selfloop transitions, 6 changer transitions 0/75 dead transitions. [2024-10-11 19:44:49,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 75 transitions, 271 flow [2024-10-11 19:44:49,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:44:49,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:44:49,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 262 transitions. [2024-10-11 19:44:49,355 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6164705882352941 [2024-10-11 19:44:49,355 INFO L175 Difference]: Start difference. First operand has 79 places, 77 transitions, 197 flow. Second operand 5 states and 262 transitions. [2024-10-11 19:44:49,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 75 transitions, 271 flow [2024-10-11 19:44:49,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 75 transitions, 268 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:44:49,357 INFO L231 Difference]: Finished difference. Result has 80 places, 75 transitions, 202 flow [2024-10-11 19:44:49,357 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=202, PETRI_PLACES=80, PETRI_TRANSITIONS=75} [2024-10-11 19:44:49,357 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, -4 predicate places. [2024-10-11 19:44:49,357 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 75 transitions, 202 flow [2024-10-11 19:44:49,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.4) internal successors, (232), 5 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:44:49,358 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:44:49,358 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:44:49,363 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-10-11 19:44:49,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:44:49,559 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-11 19:44:49,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:44:49,559 INFO L85 PathProgramCache]: Analyzing trace with hash -521400728, now seen corresponding path program 1 times [2024-10-11 19:44:49,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:44:49,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2036552087] [2024-10-11 19:44:49,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:44:49,560 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:44:49,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:44:49,565 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:44:49,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-10-11 19:44:49,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:44:49,664 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 19:44:49,665 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:44:49,744 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-10-11 19:44:49,745 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 [2024-10-11 19:44:49,758 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-11 19:44:49,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-11 19:44:49,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:44:49,842 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:44:49,842 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:44:49,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2036552087] [2024-10-11 19:44:49,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2036552087] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:44:49,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:44:49,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 19:44:49,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798973820] [2024-10-11 19:44:49,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:44:49,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 19:44:49,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:44:49,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 19:44:49,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 19:44:50,090 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 85 [2024-10-11 19:44:50,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 75 transitions, 202 flow. Second operand has 6 states, 6 states have (on average 46.166666666666664) internal successors, (277), 6 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:44:50,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:44:50,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 85 [2024-10-11 19:44:50,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:44:50,386 INFO L124 PetriNetUnfolderBase]: 483/997 cut-off events. [2024-10-11 19:44:50,386 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-10-11 19:44:50,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1833 conditions, 997 events. 483/997 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5365 event pairs, 368 based on Foata normal form. 2/887 useless extension candidates. Maximal degree in co-relation 1743. Up to 761 conditions per place. [2024-10-11 19:44:50,390 INFO L140 encePairwiseOnDemand]: 78/85 looper letters, 41 selfloop transitions, 7 changer transitions 0/82 dead transitions. [2024-10-11 19:44:50,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 82 transitions, 330 flow [2024-10-11 19:44:50,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:44:50,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:44:50,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 272 transitions. [2024-10-11 19:44:50,391 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.64 [2024-10-11 19:44:50,391 INFO L175 Difference]: Start difference. First operand has 80 places, 75 transitions, 202 flow. Second operand 5 states and 272 transitions. [2024-10-11 19:44:50,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 82 transitions, 330 flow [2024-10-11 19:44:50,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 82 transitions, 310 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 19:44:50,393 INFO L231 Difference]: Finished difference. Result has 83 places, 80 transitions, 250 flow [2024-10-11 19:44:50,393 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=250, PETRI_PLACES=83, PETRI_TRANSITIONS=80} [2024-10-11 19:44:50,394 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, -1 predicate places. [2024-10-11 19:44:50,394 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 80 transitions, 250 flow [2024-10-11 19:44:50,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 46.166666666666664) internal successors, (277), 6 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:44:50,394 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:44:50,394 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:44:50,403 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-10-11 19:44:50,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:44:50,595 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-11 19:44:50,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:44:50,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1016447015, now seen corresponding path program 1 times [2024-10-11 19:44:50,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:44:50,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [506285519] [2024-10-11 19:44:50,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:44:50,596 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:44:50,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:44:50,597 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:44:50,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-10-11 19:44:50,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:44:50,709 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-10-11 19:44:50,712 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:44:50,781 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 [2024-10-11 19:44:50,793 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 [2024-10-11 19:44:50,841 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 [2024-10-11 19:44:50,850 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 19 treesize of output 18 [2024-10-11 19:44:50,915 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-11 19:44:50,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-11 19:44:50,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-10-11 19:44:50,984 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 16 [2024-10-11 19:44:50,994 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 [2024-10-11 19:44:51,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-11 19:44:51,043 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 16 [2024-10-11 19:44:51,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-11 19:44:51,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2024-10-11 19:44:51,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:44:51,142 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:44:51,142 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:44:51,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [506285519] [2024-10-11 19:44:51,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [506285519] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:44:51,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:44:51,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 19:44:51,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103776929] [2024-10-11 19:44:51,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:44:51,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 19:44:51,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:44:51,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 19:44:51,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-10-11 19:44:51,932 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 85 [2024-10-11 19:44:51,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 80 transitions, 250 flow. Second operand has 10 states, 10 states have (on average 32.0) internal successors, (320), 10 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:44:51,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:44:51,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 85 [2024-10-11 19:44:51,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:44:52,514 INFO L124 PetriNetUnfolderBase]: 483/996 cut-off events. [2024-10-11 19:44:52,514 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-11 19:44:52,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1871 conditions, 996 events. 483/996 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5375 event pairs, 368 based on Foata normal form. 0/899 useless extension candidates. Maximal degree in co-relation 1777. Up to 774 conditions per place. [2024-10-11 19:44:52,518 INFO L140 encePairwiseOnDemand]: 73/85 looper letters, 58 selfloop transitions, 11 changer transitions 0/95 dead transitions. [2024-10-11 19:44:52,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 95 transitions, 422 flow [2024-10-11 19:44:52,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 19:44:52,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 19:44:52,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 410 transitions. [2024-10-11 19:44:52,520 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4385026737967914 [2024-10-11 19:44:52,520 INFO L175 Difference]: Start difference. First operand has 83 places, 80 transitions, 250 flow. Second operand 11 states and 410 transitions. [2024-10-11 19:44:52,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 95 transitions, 422 flow [2024-10-11 19:44:52,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 95 transitions, 420 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:44:52,522 INFO L231 Difference]: Finished difference. Result has 97 places, 85 transitions, 306 flow [2024-10-11 19:44:52,523 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=306, PETRI_PLACES=97, PETRI_TRANSITIONS=85} [2024-10-11 19:44:52,523 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 13 predicate places. [2024-10-11 19:44:52,523 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 85 transitions, 306 flow [2024-10-11 19:44:52,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 32.0) internal successors, (320), 10 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:44:52,524 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:44:52,524 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:44:52,529 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2024-10-11 19:44:52,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:44:52,724 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-11 19:44:52,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:44:52,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1016447014, now seen corresponding path program 1 times [2024-10-11 19:44:52,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:44:52,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1539855122] [2024-10-11 19:44:52,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:44:52,726 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:44:52,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:44:52,727 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:44:52,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-10-11 19:44:52,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:44:52,832 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-11 19:44:52,838 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:44:52,895 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 [2024-10-11 19:44:52,922 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 28 treesize of output 27 [2024-10-11 19:44:52,963 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-11 19:44:52,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-11 19:44:52,999 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 32 treesize of output 25 [2024-10-11 19:44:53,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2024-10-11 19:44:53,060 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 25 treesize of output 18 [2024-10-11 19:44:53,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:44:53,107 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:44:53,107 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:44:53,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1539855122] [2024-10-11 19:44:53,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1539855122] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:44:53,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:44:53,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 19:44:53,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620601421] [2024-10-11 19:44:53,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:44:53,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 19:44:53,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:44:53,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 19:44:53,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-10-11 19:44:53,784 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 85 [2024-10-11 19:44:53,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 85 transitions, 306 flow. Second operand has 10 states, 10 states have (on average 38.0) internal successors, (380), 10 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:44:53,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:44:53,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 85 [2024-10-11 19:44:53,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:44:54,366 INFO L124 PetriNetUnfolderBase]: 483/994 cut-off events. [2024-10-11 19:44:54,366 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-10-11 19:44:54,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1896 conditions, 994 events. 483/994 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5337 event pairs, 368 based on Foata normal form. 2/902 useless extension candidates. Maximal degree in co-relation 1816. Up to 767 conditions per place. [2024-10-11 19:44:54,371 INFO L140 encePairwiseOnDemand]: 74/85 looper letters, 44 selfloop transitions, 19 changer transitions 0/93 dead transitions. [2024-10-11 19:44:54,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 93 transitions, 460 flow [2024-10-11 19:44:54,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 19:44:54,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 19:44:54,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 458 transitions. [2024-10-11 19:44:54,373 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4898395721925134 [2024-10-11 19:44:54,373 INFO L175 Difference]: Start difference. First operand has 97 places, 85 transitions, 306 flow. Second operand 11 states and 458 transitions. [2024-10-11 19:44:54,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 93 transitions, 460 flow [2024-10-11 19:44:54,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 93 transitions, 456 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:44:54,375 INFO L231 Difference]: Finished difference. Result has 110 places, 90 transitions, 394 flow [2024-10-11 19:44:54,375 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=394, PETRI_PLACES=110, PETRI_TRANSITIONS=90} [2024-10-11 19:44:54,376 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 26 predicate places. [2024-10-11 19:44:54,376 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 90 transitions, 394 flow [2024-10-11 19:44:54,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 38.0) internal successors, (380), 10 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:44:54,376 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:44:54,376 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:44:54,382 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2024-10-11 19:44:54,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:44:54,577 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-11 19:44:54,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:44:54,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1445086692, now seen corresponding path program 1 times [2024-10-11 19:44:54,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:44:54,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2115210086] [2024-10-11 19:44:54,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:44:54,578 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:44:54,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:44:54,580 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:44:54,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-10-11 19:44:54,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:44:54,674 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 19:44:54,676 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:44:54,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 19:44:54,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:44:54,698 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:44:54,699 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:44:54,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2115210086] [2024-10-11 19:44:54,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2115210086] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:44:54,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:44:54,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:44:54,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629896460] [2024-10-11 19:44:54,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:44:54,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:44:54,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:44:54,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:44:54,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:44:54,783 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 85 [2024-10-11 19:44:54,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 90 transitions, 394 flow. Second operand has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 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) [2024-10-11 19:44:54,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:44:54,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 85 [2024-10-11 19:44:54,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:44:54,953 INFO L124 PetriNetUnfolderBase]: 483/986 cut-off events. [2024-10-11 19:44:54,954 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2024-10-11 19:44:54,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1918 conditions, 986 events. 483/986 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5272 event pairs, 368 based on Foata normal form. 0/901 useless extension candidates. Maximal degree in co-relation 1827. Up to 754 conditions per place. [2024-10-11 19:44:54,958 INFO L140 encePairwiseOnDemand]: 80/85 looper letters, 41 selfloop transitions, 12 changer transitions 0/88 dead transitions. [2024-10-11 19:44:54,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 88 transitions, 496 flow [2024-10-11 19:44:54,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:44:54,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:44:54,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 219 transitions. [2024-10-11 19:44:54,960 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6441176470588236 [2024-10-11 19:44:54,960 INFO L175 Difference]: Start difference. First operand has 110 places, 90 transitions, 394 flow. Second operand 4 states and 219 transitions. [2024-10-11 19:44:54,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 88 transitions, 496 flow [2024-10-11 19:44:54,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 88 transitions, 474 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-10-11 19:44:54,962 INFO L231 Difference]: Finished difference. Result has 106 places, 88 transitions, 392 flow [2024-10-11 19:44:54,962 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=392, PETRI_PLACES=106, PETRI_TRANSITIONS=88} [2024-10-11 19:44:54,963 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 22 predicate places. [2024-10-11 19:44:54,963 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 88 transitions, 392 flow [2024-10-11 19:44:54,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 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) [2024-10-11 19:44:54,963 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:44:54,963 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:44:54,968 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-11 19:44:55,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:44:55,167 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-11 19:44:55,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:44:55,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1445086693, now seen corresponding path program 1 times [2024-10-11 19:44:55,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:44:55,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [107540927] [2024-10-11 19:44:55,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:44:55,168 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:44:55,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:44:55,169 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:44:55,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-10-11 19:44:55,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:44:55,261 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 19:44:55,262 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:44:55,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-11 19:44:55,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:44:55,304 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:44:55,304 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:44:55,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [107540927] [2024-10-11 19:44:55,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [107540927] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:44:55,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:44:55,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:44:55,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013000431] [2024-10-11 19:44:55,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:44:55,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:44:55,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:44:55,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:44:55,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:44:55,449 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 85 [2024-10-11 19:44:55,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 88 transitions, 392 flow. Second operand has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:44:55,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:44:55,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 85 [2024-10-11 19:44:55,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:44:55,622 INFO L124 PetriNetUnfolderBase]: 483/978 cut-off events. [2024-10-11 19:44:55,622 INFO L125 PetriNetUnfolderBase]: For 131/131 co-relation queries the response was YES. [2024-10-11 19:44:55,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1901 conditions, 978 events. 483/978 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5221 event pairs, 368 based on Foata normal form. 8/900 useless extension candidates. Maximal degree in co-relation 1815. Up to 754 conditions per place. [2024-10-11 19:44:55,626 INFO L140 encePairwiseOnDemand]: 80/85 looper letters, 39 selfloop transitions, 12 changer transitions 0/86 dead transitions. [2024-10-11 19:44:55,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 86 transitions, 490 flow [2024-10-11 19:44:55,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:44:55,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:44:55,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 225 transitions. [2024-10-11 19:44:55,627 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6617647058823529 [2024-10-11 19:44:55,627 INFO L175 Difference]: Start difference. First operand has 106 places, 88 transitions, 392 flow. Second operand 4 states and 225 transitions. [2024-10-11 19:44:55,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 86 transitions, 490 flow [2024-10-11 19:44:55,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 86 transitions, 466 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 19:44:55,629 INFO L231 Difference]: Finished difference. Result has 104 places, 86 transitions, 388 flow [2024-10-11 19:44:55,629 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=388, PETRI_PLACES=104, PETRI_TRANSITIONS=86} [2024-10-11 19:44:55,630 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 20 predicate places. [2024-10-11 19:44:55,630 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 86 transitions, 388 flow [2024-10-11 19:44:55,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:44:55,630 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:44:55,630 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:44:55,635 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2024-10-11 19:44:55,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:44:55,831 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-11 19:44:55,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:44:55,831 INFO L85 PathProgramCache]: Analyzing trace with hash -2071939049, now seen corresponding path program 1 times [2024-10-11 19:44:55,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:44:55,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1486406012] [2024-10-11 19:44:55,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:44:55,832 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:44:55,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:44:55,833 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:44:55,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-10-11 19:44:55,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:44:55,935 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 19:44:55,936 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:44:55,951 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:44:55,951 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:44:55,971 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:44:55,972 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:44:55,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1486406012] [2024-10-11 19:44:55,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1486406012] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:44:55,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:44:55,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-10-11 19:44:55,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748275494] [2024-10-11 19:44:55,972 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:44:55,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 19:44:55,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:44:55,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 19:44:55,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-11 19:44:55,973 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 85 [2024-10-11 19:44:55,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 86 transitions, 388 flow. Second operand has 6 states, 6 states have (on average 52.833333333333336) internal successors, (317), 6 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:44:55,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:44:55,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 85 [2024-10-11 19:44:55,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:44:56,217 INFO L124 PetriNetUnfolderBase]: 483/1028 cut-off events. [2024-10-11 19:44:56,217 INFO L125 PetriNetUnfolderBase]: For 217/217 co-relation queries the response was YES. [2024-10-11 19:44:56,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2053 conditions, 1028 events. 483/1028 cut-off events. For 217/217 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5208 event pairs, 368 based on Foata normal form. 6/948 useless extension candidates. Maximal degree in co-relation 1887. Up to 750 conditions per place. [2024-10-11 19:44:56,221 INFO L140 encePairwiseOnDemand]: 81/85 looper letters, 57 selfloop transitions, 12 changer transitions 0/104 dead transitions. [2024-10-11 19:44:56,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 104 transitions, 674 flow [2024-10-11 19:44:56,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 19:44:56,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 19:44:56,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 354 transitions. [2024-10-11 19:44:56,223 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6941176470588235 [2024-10-11 19:44:56,223 INFO L175 Difference]: Start difference. First operand has 104 places, 86 transitions, 388 flow. Second operand 6 states and 354 transitions. [2024-10-11 19:44:56,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 104 transitions, 674 flow [2024-10-11 19:44:56,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 104 transitions, 622 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 19:44:56,225 INFO L231 Difference]: Finished difference. Result has 110 places, 92 transitions, 468 flow [2024-10-11 19:44:56,226 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=468, PETRI_PLACES=110, PETRI_TRANSITIONS=92} [2024-10-11 19:44:56,226 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 26 predicate places. [2024-10-11 19:44:56,226 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 92 transitions, 468 flow [2024-10-11 19:44:56,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.833333333333336) internal successors, (317), 6 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:44:56,226 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:44:56,226 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:44:56,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2024-10-11 19:44:56,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:44:56,427 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-11 19:44:56,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:44:56,427 INFO L85 PathProgramCache]: Analyzing trace with hash 2074200430, now seen corresponding path program 1 times [2024-10-11 19:44:56,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:44:56,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1647377317] [2024-10-11 19:44:56,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:44:56,428 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:44:56,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:44:56,429 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:44:56,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2024-10-11 19:44:56,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:44:56,684 INFO L255 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-11 19:44:56,686 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:44:56,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 19:44:56,788 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 [2024-10-11 19:44:56,838 INFO L349 Elim1Store]: treesize reduction 90, result has 30.2 percent of original size [2024-10-11 19:44:56,838 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 [2024-10-11 19:44:56,885 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 [2024-10-11 19:44:56,933 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 [2024-10-11 19:44:56,959 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 [2024-10-11 19:44:56,979 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 [2024-10-11 19:44:56,992 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:44:56,993 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:44:57,118 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_new_~p~0#1.base_49| (_ BitVec 32)) (v_ArrVal_621 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_618 (_ BitVec 1))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_new_~p~0#1.base_49|))) (= (_ bv0 1) (bvadd (_ bv1 1) (select (store |c_#valid| |v_ULTIMATE.start_new_~p~0#1.base_49| v_ArrVal_618) (select (select (store |c_#memory_$Pointer$#0.base| |v_ULTIMATE.start_new_~p~0#1.base_49| v_ArrVal_621) |c_~#c~0.base|) (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))))))) is different from false [2024-10-11 19:44:57,130 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 19:44:57,130 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 [2024-10-11 19:44:57,141 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 19:44:57,141 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 [2024-10-11 19:44:57,147 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 [2024-10-11 19:44:58,037 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:44:58,037 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:44:58,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1647377317] [2024-10-11 19:44:58,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1647377317] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:44:58,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:44:58,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2024-10-11 19:44:58,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584657308] [2024-10-11 19:44:58,038 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:44:58,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-11 19:44:58,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:44:58,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-11 19:44:58,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=191, Unknown=9, NotChecked=28, Total=272 [2024-10-11 19:44:58,040 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 85 [2024-10-11 19:44:58,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 92 transitions, 468 flow. Second operand has 17 states, 17 states have (on average 14.235294117647058) internal successors, (242), 17 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:44:58,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:44:58,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 85 [2024-10-11 19:44:58,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:44:59,302 INFO L124 PetriNetUnfolderBase]: 1518/2684 cut-off events. [2024-10-11 19:44:59,302 INFO L125 PetriNetUnfolderBase]: For 174/174 co-relation queries the response was YES. [2024-10-11 19:44:59,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5361 conditions, 2684 events. 1518/2684 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 15284 event pairs, 1287 based on Foata normal form. 6/1907 useless extension candidates. Maximal degree in co-relation 5181. Up to 2339 conditions per place. [2024-10-11 19:44:59,315 INFO L140 encePairwiseOnDemand]: 76/85 looper letters, 62 selfloop transitions, 25 changer transitions 0/97 dead transitions. [2024-10-11 19:44:59,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 97 transitions, 656 flow [2024-10-11 19:44:59,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 19:44:59,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 19:44:59,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 201 transitions. [2024-10-11 19:44:59,317 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.21497326203208555 [2024-10-11 19:44:59,318 INFO L175 Difference]: Start difference. First operand has 110 places, 92 transitions, 468 flow. Second operand 11 states and 201 transitions. [2024-10-11 19:44:59,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 97 transitions, 656 flow [2024-10-11 19:44:59,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 97 transitions, 638 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-10-11 19:44:59,320 INFO L231 Difference]: Finished difference. Result has 118 places, 91 transitions, 496 flow [2024-10-11 19:44:59,320 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=496, PETRI_PLACES=118, PETRI_TRANSITIONS=91} [2024-10-11 19:44:59,321 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 34 predicate places. [2024-10-11 19:44:59,321 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 91 transitions, 496 flow [2024-10-11 19:44:59,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 14.235294117647058) internal successors, (242), 17 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:44:59,321 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:44:59,321 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:44:59,329 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2024-10-11 19:44:59,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:44:59,522 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-11 19:44:59,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:44:59,522 INFO L85 PathProgramCache]: Analyzing trace with hash 2074200431, now seen corresponding path program 1 times [2024-10-11 19:44:59,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:44:59,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1948907375] [2024-10-11 19:44:59,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:44:59,523 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:44:59,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:44:59,524 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:44:59,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2024-10-11 19:44:59,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:44:59,760 INFO L255 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-10-11 19:44:59,763 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:44:59,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 19:44:59,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-11 19:44:59,916 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 [2024-10-11 19:44:59,932 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 [2024-10-11 19:44:59,972 INFO L349 Elim1Store]: treesize reduction 29, result has 46.3 percent of original size [2024-10-11 19:44:59,972 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 [2024-10-11 19:44:59,999 INFO L349 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2024-10-11 19:44:59,999 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 [2024-10-11 19:45:00,032 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 [2024-10-11 19:45:00,040 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 [2024-10-11 19:45:00,074 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 [2024-10-11 19:45:00,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 27 [2024-10-11 19:45:00,106 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 [2024-10-11 19:45:00,109 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 [2024-10-11 19:45:00,132 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 [2024-10-11 19:45:00,144 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:45:00,145 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:45:00,215 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))) (and (forall ((v_ArrVal_732 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_732) |c_~#c~0.base|) .cse1))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32))))) (forall ((v_ArrVal_732 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_733 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_732) |c_~#c~0.base|) .cse1) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_733) |c_~#c~0.base|) .cse1)))))) is different from false [2024-10-11 19:45:00,465 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 19:45:00,466 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 [2024-10-11 19:45:00,478 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 19:45:00,479 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 [2024-10-11 19:45:00,487 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 [2024-10-11 19:45:00,535 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 19:45:00,535 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 [2024-10-11 19:45:00,543 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 19:45:00,543 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 [2024-10-11 19:45:00,545 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-11 19:45:00,556 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 19:45:00,557 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 38 treesize of output 41 [2024-10-11 19:45:00,560 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-11 19:45:00,572 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 19:45:00,573 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 27 treesize of output 30 [2024-10-11 19:45:01,291 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-11 19:45:01,292 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-10-11 19:45:01,292 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:45:01,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1948907375] [2024-10-11 19:45:01,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1948907375] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:45:01,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:45:01,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2024-10-11 19:45:01,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700171777] [2024-10-11 19:45:01,293 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:45:01,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-11 19:45:01,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:45:01,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-11 19:45:01,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=193, Unknown=9, NotChecked=28, Total=272 [2024-10-11 19:45:02,632 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 85 [2024-10-11 19:45:02,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 91 transitions, 496 flow. Second operand has 17 states, 17 states have (on average 8.235294117647058) internal successors, (140), 17 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:45:02,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:45:02,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 85 [2024-10-11 19:45:02,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:45:04,977 INFO L124 PetriNetUnfolderBase]: 2199/3495 cut-off events. [2024-10-11 19:45:04,977 INFO L125 PetriNetUnfolderBase]: For 212/212 co-relation queries the response was YES. [2024-10-11 19:45:04,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7260 conditions, 3495 events. 2199/3495 cut-off events. For 212/212 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 18230 event pairs, 1920 based on Foata normal form. 6/2091 useless extension candidates. Maximal degree in co-relation 7070. Up to 3398 conditions per place. [2024-10-11 19:45:04,991 INFO L140 encePairwiseOnDemand]: 74/85 looper letters, 65 selfloop transitions, 27 changer transitions 0/96 dead transitions. [2024-10-11 19:45:04,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 96 transitions, 694 flow [2024-10-11 19:45:04,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 19:45:04,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-11 19:45:04,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 152 transitions. [2024-10-11 19:45:04,993 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.13755656108597286 [2024-10-11 19:45:04,993 INFO L175 Difference]: Start difference. First operand has 118 places, 91 transitions, 496 flow. Second operand 13 states and 152 transitions. [2024-10-11 19:45:04,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 96 transitions, 694 flow [2024-10-11 19:45:04,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 96 transitions, 599 flow, removed 14 selfloop flow, removed 13 redundant places. [2024-10-11 19:45:04,996 INFO L231 Difference]: Finished difference. Result has 119 places, 93 transitions, 469 flow [2024-10-11 19:45:04,997 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=469, PETRI_PLACES=119, PETRI_TRANSITIONS=93} [2024-10-11 19:45:04,997 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 35 predicate places. [2024-10-11 19:45:04,997 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 93 transitions, 469 flow [2024-10-11 19:45:04,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 8.235294117647058) internal successors, (140), 17 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:45:04,997 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:45:04,997 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1] [2024-10-11 19:45:05,007 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2024-10-11 19:45:05,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:45:05,198 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-11 19:45:05,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:45:05,199 INFO L85 PathProgramCache]: Analyzing trace with hash -671049121, now seen corresponding path program 2 times [2024-10-11 19:45:05,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:45:05,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1267453735] [2024-10-11 19:45:05,199 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:45:05,200 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:45:05,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:45:05,202 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:45:05,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2024-10-11 19:45:05,634 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:45:05,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:45:05,650 INFO L255 TraceCheckSpWp]: Trace formula consists of 596 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 19:45:05,652 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:45:05,698 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:45:05,698 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:45:05,781 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:45:05,781 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:45:05,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1267453735] [2024-10-11 19:45:05,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1267453735] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:45:05,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:45:05,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2024-10-11 19:45:05,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490447129] [2024-10-11 19:45:05,782 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:45:05,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 19:45:05,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:45:05,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 19:45:05,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-10-11 19:45:05,783 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 85 [2024-10-11 19:45:05,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 93 transitions, 469 flow. Second operand has 12 states, 12 states have (on average 53.916666666666664) internal successors, (647), 12 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:45:05,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:45:05,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 85 [2024-10-11 19:45:05,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:45:06,467 INFO L124 PetriNetUnfolderBase]: 483/1136 cut-off events. [2024-10-11 19:45:06,467 INFO L125 PetriNetUnfolderBase]: For 513/513 co-relation queries the response was YES. [2024-10-11 19:45:06,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2514 conditions, 1136 events. 483/1136 cut-off events. For 513/513 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5189 event pairs, 368 based on Foata normal form. 12/1062 useless extension candidates. Maximal degree in co-relation 2082. Up to 750 conditions per place. [2024-10-11 19:45:06,472 INFO L140 encePairwiseOnDemand]: 81/85 looper letters, 93 selfloop transitions, 24 changer transitions 0/153 dead transitions. [2024-10-11 19:45:06,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 153 transitions, 1255 flow [2024-10-11 19:45:06,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 19:45:06,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-11 19:45:06,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 687 transitions. [2024-10-11 19:45:06,479 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6735294117647059 [2024-10-11 19:45:06,479 INFO L175 Difference]: Start difference. First operand has 119 places, 93 transitions, 469 flow. Second operand 12 states and 687 transitions. [2024-10-11 19:45:06,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 153 transitions, 1255 flow [2024-10-11 19:45:06,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 153 transitions, 1085 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-10-11 19:45:06,485 INFO L231 Difference]: Finished difference. Result has 127 places, 107 transitions, 665 flow [2024-10-11 19:45:06,485 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=665, PETRI_PLACES=127, PETRI_TRANSITIONS=107} [2024-10-11 19:45:06,486 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 43 predicate places. [2024-10-11 19:45:06,486 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 107 transitions, 665 flow [2024-10-11 19:45:06,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 53.916666666666664) internal successors, (647), 12 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:45:06,487 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:45:06,487 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1] [2024-10-11 19:45:06,498 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2024-10-11 19:45:06,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:45:06,688 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-11 19:45:06,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:45:06,688 INFO L85 PathProgramCache]: Analyzing trace with hash 27780959, now seen corresponding path program 3 times [2024-10-11 19:45:06,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:45:06,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1247866193] [2024-10-11 19:45:06,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 19:45:06,689 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:45:06,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:45:06,690 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:45:06,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2024-10-11 19:45:16,271 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-10-11 19:45:16,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:45:16,347 INFO L255 TraceCheckSpWp]: Trace formula consists of 1400 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 19:45:16,350 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:45:16,518 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 2 proven. 415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:45:16,518 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:45:16,794 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 2 proven. 415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:45:16,795 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:45:16,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1247866193] [2024-10-11 19:45:16,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1247866193] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:45:16,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:45:16,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2024-10-11 19:45:16,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139701981] [2024-10-11 19:45:16,795 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:45:16,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-11 19:45:16,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:45:16,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-11 19:45:16,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2024-10-11 19:45:16,797 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 85 [2024-10-11 19:45:16,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 107 transitions, 665 flow. Second operand has 24 states, 24 states have (on average 54.458333333333336) internal successors, (1307), 24 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:45:16,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:45:16,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 85 [2024-10-11 19:45:16,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:45:18,731 INFO L124 PetriNetUnfolderBase]: 483/1376 cut-off events. [2024-10-11 19:45:18,731 INFO L125 PetriNetUnfolderBase]: For 1780/1780 co-relation queries the response was YES. [2024-10-11 19:45:18,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3357 conditions, 1376 events. 483/1376 cut-off events. For 1780/1780 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5206 event pairs, 368 based on Foata normal form. 24/1314 useless extension candidates. Maximal degree in co-relation 2495. Up to 750 conditions per place. [2024-10-11 19:45:18,735 INFO L140 encePairwiseOnDemand]: 81/85 looper letters, 165 selfloop transitions, 48 changer transitions 0/249 dead transitions. [2024-10-11 19:45:18,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 249 transitions, 2317 flow [2024-10-11 19:45:18,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-11 19:45:18,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-11 19:45:18,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1353 transitions. [2024-10-11 19:45:18,738 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.663235294117647 [2024-10-11 19:45:18,739 INFO L175 Difference]: Start difference. First operand has 127 places, 107 transitions, 665 flow. Second operand 24 states and 1353 transitions. [2024-10-11 19:45:18,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 249 transitions, 2317 flow [2024-10-11 19:45:18,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 249 transitions, 2305 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 19:45:18,746 INFO L231 Difference]: Finished difference. Result has 160 places, 133 transitions, 1219 flow [2024-10-11 19:45:18,746 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1219, PETRI_PLACES=160, PETRI_TRANSITIONS=133} [2024-10-11 19:45:18,746 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 76 predicate places. [2024-10-11 19:45:18,747 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 133 transitions, 1219 flow [2024-10-11 19:45:18,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 54.458333333333336) internal successors, (1307), 24 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:45:18,747 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:45:18,748 INFO L204 CegarLoopForPetriNet]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 2, 1, 1, 1, 1, 1] [2024-10-11 19:45:18,793 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2024-10-11 19:45:18,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:45:18,949 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-11 19:45:18,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:45:18,949 INFO L85 PathProgramCache]: Analyzing trace with hash -428654241, now seen corresponding path program 4 times [2024-10-11 19:45:18,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:45:18,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1360228410] [2024-10-11 19:45:18,950 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 19:45:18,950 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:45:18,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:45:18,952 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:45:18,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process