./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 a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 52746884466210ec366bc04a3a6cb03f413619353c73143d79c1024e676e598e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 12:28:54,062 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 12:28:54,142 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-13 12:28:54,149 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 12:28:54,150 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 12:28:54,188 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 12:28:54,188 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 12:28:54,189 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 12:28:54,190 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 12:28:54,191 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 12:28:54,191 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 12:28:54,192 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 12:28:54,192 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 12:28:54,193 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 12:28:54,195 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 12:28:54,195 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 12:28:54,195 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 12:28:54,196 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 12:28:54,196 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 12:28:54,196 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 12:28:54,200 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-13 12:28:54,201 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-13 12:28:54,201 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-13 12:28:54,201 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 12:28:54,202 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-13 12:28:54,202 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 12:28:54,202 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 12:28:54,202 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 12:28:54,203 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 12:28:54,203 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 12:28:54,203 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 12:28:54,203 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 12:28:54,203 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 12:28:54,204 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:28:54,204 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 12:28:54,206 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 12:28:54,206 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 12:28:54,206 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 12:28:54,206 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 12:28:54,207 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 12:28:54,207 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 12:28:54,207 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 12:28:54,207 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52746884466210ec366bc04a3a6cb03f413619353c73143d79c1024e676e598e [2024-10-13 12:28:54,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 12:28:54,521 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 12:28:54,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 12:28:54,526 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 12:28:54,526 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 12:28:54,528 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i [2024-10-13 12:28:56,036 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 12:28:56,317 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 12:28:56,318 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i [2024-10-13 12:28:56,346 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69e8720dc/7c312765d2d2447dbb1b4aa972783bbd/FLAG69cb10293 [2024-10-13 12:28:56,624 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69e8720dc/7c312765d2d2447dbb1b4aa972783bbd [2024-10-13 12:28:56,627 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 12:28:56,628 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 12:28:56,632 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 12:28:56,632 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 12:28:56,638 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 12:28:56,639 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:28:56" (1/1) ... [2024-10-13 12:28:56,640 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e39694e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:28:56, skipping insertion in model container [2024-10-13 12:28:56,640 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:28:56" (1/1) ... [2024-10-13 12:28:56,695 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:28:57,247 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-13 12:28:57,248 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-13 12:28:57,249 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-13 12:28:57,250 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-13 12:28:57,290 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:28:57,325 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) [2024-10-13 12:28:57,326 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7959e055 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:28:57, skipping insertion in model container [2024-10-13 12:28:57,326 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 12:28:57,326 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-13 12:28:57,329 INFO L158 Benchmark]: Toolchain (without parser) took 700.04ms. Allocated memory is still 148.9MB. Free memory was 92.7MB in the beginning and 74.7MB in the end (delta: 18.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-10-13 12:28:57,330 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 148.9MB. Free memory is still 124.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 12:28:57,331 INFO L158 Benchmark]: CACSL2BoogieTranslator took 694.27ms. Allocated memory is still 148.9MB. Free memory was 92.4MB in the beginning and 74.7MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-10-13 12:28:57,332 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 148.9MB. Free memory is still 124.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 694.27ms. Allocated memory is still 148.9MB. Free memory was 92.4MB in the beginning and 74.7MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. 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/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 52746884466210ec366bc04a3a6cb03f413619353c73143d79c1024e676e598e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 12:28:59,612 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 12:28:59,704 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-13 12:28:59,713 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 12:28:59,714 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 12:28:59,743 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 12:28:59,746 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 12:28:59,746 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 12:28:59,747 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 12:28:59,747 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 12:28:59,747 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 12:28:59,748 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 12:28:59,749 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 12:28:59,751 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 12:28:59,752 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 12:28:59,752 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 12:28:59,752 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 12:28:59,753 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 12:28:59,753 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 12:28:59,753 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 12:28:59,753 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-13 12:28:59,757 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-13 12:28:59,758 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-13 12:28:59,758 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 12:28:59,758 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-13 12:28:59,758 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-13 12:28:59,759 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 12:28:59,759 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-13 12:28:59,759 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 12:28:59,759 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 12:28:59,759 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 12:28:59,760 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 12:28:59,760 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 12:28:59,760 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 12:28:59,760 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 12:28:59,760 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:28:59,761 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 12:28:59,761 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 12:28:59,763 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-13 12:28:59,764 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-13 12:28:59,764 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 12:28:59,764 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 12:28:59,764 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 12:28:59,765 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 12:28:59,765 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-13 12:28:59,765 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52746884466210ec366bc04a3a6cb03f413619353c73143d79c1024e676e598e [2024-10-13 12:29:00,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 12:29:00,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 12:29:00,183 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 12:29:00,186 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 12:29:00,188 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 12:29:00,190 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i [2024-10-13 12:29:01,760 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 12:29:02,089 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 12:29:02,090 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i [2024-10-13 12:29:02,114 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51cb11ae7/68b69cc24ab940138f77081bdbb35fc4/FLAGcb7e8f885 [2024-10-13 12:29:02,136 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51cb11ae7/68b69cc24ab940138f77081bdbb35fc4 [2024-10-13 12:29:02,139 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 12:29:02,142 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 12:29:02,145 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 12:29:02,145 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 12:29:02,152 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 12:29:02,153 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:29:02" (1/1) ... [2024-10-13 12:29:02,157 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24b537af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:29:02, skipping insertion in model container [2024-10-13 12:29:02,157 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:29:02" (1/1) ... [2024-10-13 12:29:02,224 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:29:02,770 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-13 12:29:02,771 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-13 12:29:02,772 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-13 12:29:02,773 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-13 12:29:02,809 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:29:02,837 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-13 12:29:02,847 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:29:02,893 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-13 12:29:02,894 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-13 12:29:02,894 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-13 12:29:02,895 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-13 12:29:02,909 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:29:02,922 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 12:29:02,966 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-13 12:29:02,970 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-13 12:29:02,971 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-13 12:29:02,971 WARN L1659 CHandler]: Possible shadowing of function new [2024-10-13 12:29:02,984 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:29:03,087 INFO L204 MainTranslator]: Completed translation [2024-10-13 12:29:03,089 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:29:03 WrapperNode [2024-10-13 12:29:03,089 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 12:29:03,090 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 12:29:03,090 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 12:29:03,090 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 12:29:03,097 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:29:03" (1/1) ... [2024-10-13 12:29:03,129 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:29:03" (1/1) ... [2024-10-13 12:29:03,156 INFO L138 Inliner]: procedures = 274, calls = 25, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 113 [2024-10-13 12:29:03,157 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 12:29:03,158 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 12:29:03,158 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 12:29:03,158 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 12:29:03,169 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:29:03" (1/1) ... [2024-10-13 12:29:03,170 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:29:03" (1/1) ... [2024-10-13 12:29:03,174 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:29:03" (1/1) ... [2024-10-13 12:29:03,204 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]. [2024-10-13 12:29:03,204 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:29:03" (1/1) ... [2024-10-13 12:29:03,205 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:29:03" (1/1) ... [2024-10-13 12:29:03,217 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:29:03" (1/1) ... [2024-10-13 12:29:03,225 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:29:03" (1/1) ... [2024-10-13 12:29:03,231 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:29:03" (1/1) ... [2024-10-13 12:29:03,232 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:29:03" (1/1) ... [2024-10-13 12:29:03,242 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 12:29:03,247 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 12:29:03,247 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 12:29:03,247 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 12:29:03,248 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:29:03" (1/1) ... [2024-10-13 12:29:03,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:29:03,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:29:03,289 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 12:29:03,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 12:29:03,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-13 12:29:03,345 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-10-13 12:29:03,346 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-10-13 12:29:03,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-13 12:29:03,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-13 12:29:03,348 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-13 12:29:03,348 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-13 12:29:03,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-13 12:29:03,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 12:29:03,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-13 12:29:03,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 12:29:03,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 12:29:03,351 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 12:29:03,570 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 12:29:03,572 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 12:29:04,128 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 12:29:04,128 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 12:29:04,338 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 12:29:04,338 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-13 12:29:04,339 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:29:04 BoogieIcfgContainer [2024-10-13 12:29:04,339 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 12:29:04,341 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 12:29:04,341 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 12:29:04,345 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 12:29:04,345 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:29:02" (1/3) ... [2024-10-13 12:29:04,346 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e216568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:29:04, skipping insertion in model container [2024-10-13 12:29:04,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:29:03" (2/3) ... [2024-10-13 12:29:04,347 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e216568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:29:04, skipping insertion in model container [2024-10-13 12:29:04,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:29:04" (3/3) ... [2024-10-13 12:29:04,349 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_21-arrayloop2_nr.i [2024-10-13 12:29:04,367 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 12:29:04,367 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 29 error locations. [2024-10-13 12:29:04,368 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 12:29:04,462 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 12:29:04,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 85 transitions, 178 flow [2024-10-13 12:29:04,541 INFO L124 PetriNetUnfolderBase]: 6/83 cut-off events. [2024-10-13 12:29:04,544 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 12:29:04,549 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. [2024-10-13 12:29:04,549 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 85 transitions, 178 flow [2024-10-13 12:29:04,555 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 83 transitions, 172 flow [2024-10-13 12:29:04,566 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 12:29:04,576 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;@1a7a091, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 12:29:04,577 INFO L334 AbstractCegarLoop]: Starting to check reachability of 47 error locations. [2024-10-13 12:29:04,581 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 12:29:04,582 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-13 12:29:04,582 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 12:29:04,582 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:29:04,584 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 12:29:04,584 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-13 12:29:04,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:29:04,590 INFO L85 PathProgramCache]: Analyzing trace with hash 359158, now seen corresponding path program 1 times [2024-10-13 12:29:04,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:29:04,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2124395650] [2024-10-13 12:29:04,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:29:04,603 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 [2024-10-13 12:29:04,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:29:04,605 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:29:04,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-13 12:29:04,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:29:04,704 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 12:29:04,708 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:29:04,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:29:04,792 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:29:04,792 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:29:04,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2124395650] [2024-10-13 12:29:04,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2124395650] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:29:04,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:29:04,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 12:29:04,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981532176] [2024-10-13 12:29:04,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:29:04,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:29:04,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:29:04,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:29:04,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:29:05,103 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 85 [2024-10-13 12:29:05,108 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) [2024-10-13 12:29:05,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:29:05,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 85 [2024-10-13 12:29:05,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:29:05,705 INFO L124 PetriNetUnfolderBase]: 482/954 cut-off events. [2024-10-13 12:29:05,706 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-13 12:29:05,710 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. [2024-10-13 12:29:05,720 INFO L140 encePairwiseOnDemand]: 78/85 looper letters, 34 selfloop transitions, 3 changer transitions 0/79 dead transitions. [2024-10-13 12:29:05,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 79 transitions, 238 flow [2024-10-13 12:29:05,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:29:05,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:29:05,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 217 transitions. [2024-10-13 12:29:05,737 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.638235294117647 [2024-10-13 12:29:05,739 INFO L175 Difference]: Start difference. First operand has 84 places, 83 transitions, 172 flow. Second operand 4 states and 217 transitions. [2024-10-13 12:29:05,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 79 transitions, 238 flow [2024-10-13 12:29:05,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 79 transitions, 236 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 12:29:05,750 INFO L231 Difference]: Finished difference. Result has 81 places, 79 transitions, 168 flow [2024-10-13 12:29:05,752 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} [2024-10-13 12:29:05,758 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, -3 predicate places. [2024-10-13 12:29:05,759 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 79 transitions, 168 flow [2024-10-13 12:29:05,759 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) [2024-10-13 12:29:05,759 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:29:05,759 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 12:29:05,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2024-10-13 12:29:05,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:29:05,963 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-13 12:29:05,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:29:05,964 INFO L85 PathProgramCache]: Analyzing trace with hash 359159, now seen corresponding path program 1 times [2024-10-13 12:29:05,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:29:05,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1774773529] [2024-10-13 12:29:05,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:29:05,965 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 [2024-10-13 12:29:05,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:29:05,968 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:29:05,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-13 12:29:06,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:29:06,042 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-13 12:29:06,043 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:29:06,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:29:06,149 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:29:06,149 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:29:06,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1774773529] [2024-10-13 12:29:06,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1774773529] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:29:06,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:29:06,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 12:29:06,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791164506] [2024-10-13 12:29:06,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:29:06,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:29:06,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:29:06,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:29:06,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:29:06,383 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 85 [2024-10-13 12:29:06,384 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) [2024-10-13 12:29:06,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:29:06,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 85 [2024-10-13 12:29:06,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:29:06,784 INFO L124 PetriNetUnfolderBase]: 483/959 cut-off events. [2024-10-13 12:29:06,785 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 12:29:06,788 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. [2024-10-13 12:29:06,794 INFO L140 encePairwiseOnDemand]: 77/85 looper letters, 38 selfloop transitions, 5 changer transitions 0/83 dead transitions. [2024-10-13 12:29:06,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 83 transitions, 266 flow [2024-10-13 12:29:06,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:29:06,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:29:06,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 230 transitions. [2024-10-13 12:29:06,798 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6764705882352942 [2024-10-13 12:29:06,798 INFO L175 Difference]: Start difference. First operand has 81 places, 79 transitions, 168 flow. Second operand 4 states and 230 transitions. [2024-10-13 12:29:06,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 83 transitions, 266 flow [2024-10-13 12:29:06,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 83 transitions, 256 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 12:29:06,805 INFO L231 Difference]: Finished difference. Result has 83 places, 83 transitions, 201 flow [2024-10-13 12:29:06,806 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} [2024-10-13 12:29:06,807 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, -1 predicate places. [2024-10-13 12:29:06,807 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 83 transitions, 201 flow [2024-10-13 12:29:06,808 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) [2024-10-13 12:29:06,808 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:29:06,809 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-13 12:29:06,813 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-10-13 12:29:07,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:29:07,010 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-13 12:29:07,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:29:07,011 INFO L85 PathProgramCache]: Analyzing trace with hash 2110054030, now seen corresponding path program 1 times [2024-10-13 12:29:07,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:29:07,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2022220065] [2024-10-13 12:29:07,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:29:07,012 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 [2024-10-13 12:29:07,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:29:07,013 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:29:07,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-13 12:29:07,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:29:07,118 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 12:29:07,120 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:29:07,159 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 [2024-10-13 12:29:07,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:29:07,183 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:29:07,183 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:29:07,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2022220065] [2024-10-13 12:29:07,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2022220065] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:29:07,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:29:07,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 12:29:07,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051289841] [2024-10-13 12:29:07,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:29:07,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:29:07,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:29:07,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:29:07,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:29:07,298 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 85 [2024-10-13 12:29:07,299 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) [2024-10-13 12:29:07,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:29:07,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 85 [2024-10-13 12:29:07,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:29:07,596 INFO L124 PetriNetUnfolderBase]: 483/958 cut-off events. [2024-10-13 12:29:07,597 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-13 12:29:07,600 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. [2024-10-13 12:29:07,616 INFO L140 encePairwiseOnDemand]: 82/85 looper letters, 36 selfloop transitions, 3 changer transitions 0/82 dead transitions. [2024-10-13 12:29:07,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 82 transitions, 277 flow [2024-10-13 12:29:07,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:29:07,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:29:07,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 183 transitions. [2024-10-13 12:29:07,622 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7176470588235294 [2024-10-13 12:29:07,622 INFO L175 Difference]: Start difference. First operand has 83 places, 83 transitions, 201 flow. Second operand 3 states and 183 transitions. [2024-10-13 12:29:07,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 82 transitions, 277 flow [2024-10-13 12:29:07,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 82 transitions, 274 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 12:29:07,627 INFO L231 Difference]: Finished difference. Result has 83 places, 82 transitions, 202 flow [2024-10-13 12:29:07,628 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} [2024-10-13 12:29:07,629 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, -1 predicate places. [2024-10-13 12:29:07,629 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 82 transitions, 202 flow [2024-10-13 12:29:07,631 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) [2024-10-13 12:29:07,631 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:29:07,631 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-13 12:29:07,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-10-13 12:29:07,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:29:07,833 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-13 12:29:07,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:29:07,834 INFO L85 PathProgramCache]: Analyzing trace with hash 2110054029, now seen corresponding path program 1 times [2024-10-13 12:29:07,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:29:07,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1875057975] [2024-10-13 12:29:07,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:29:07,836 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 [2024-10-13 12:29:07,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:29:07,839 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:29:07,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-13 12:29:07,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:29:07,919 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 12:29:07,920 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:29:07,928 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 [2024-10-13 12:29:07,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:29:07,934 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:29:07,935 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:29:07,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1875057975] [2024-10-13 12:29:07,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1875057975] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:29:07,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:29:07,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 12:29:07,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542820016] [2024-10-13 12:29:07,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:29:07,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:29:07,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:29:07,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:29:07,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:29:08,019 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 85 [2024-10-13 12:29:08,020 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) [2024-10-13 12:29:08,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:29:08,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 85 [2024-10-13 12:29:08,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:29:08,326 INFO L124 PetriNetUnfolderBase]: 483/957 cut-off events. [2024-10-13 12:29:08,326 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-13 12:29:08,328 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. [2024-10-13 12:29:08,333 INFO L140 encePairwiseOnDemand]: 82/85 looper letters, 36 selfloop transitions, 3 changer transitions 0/81 dead transitions. [2024-10-13 12:29:08,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 81 transitions, 278 flow [2024-10-13 12:29:08,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:29:08,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:29:08,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 183 transitions. [2024-10-13 12:29:08,336 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7176470588235294 [2024-10-13 12:29:08,336 INFO L175 Difference]: Start difference. First operand has 83 places, 82 transitions, 202 flow. Second operand 3 states and 183 transitions. [2024-10-13 12:29:08,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 81 transitions, 278 flow [2024-10-13 12:29:08,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 81 transitions, 272 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 12:29:08,338 INFO L231 Difference]: Finished difference. Result has 82 places, 81 transitions, 200 flow [2024-10-13 12:29:08,339 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} [2024-10-13 12:29:08,339 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, -2 predicate places. [2024-10-13 12:29:08,340 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 81 transitions, 200 flow [2024-10-13 12:29:08,340 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) [2024-10-13 12:29:08,340 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:29:08,340 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:29:08,346 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-10-13 12:29:08,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:29:08,542 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-13 12:29:08,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:29:08,543 INFO L85 PathProgramCache]: Analyzing trace with hash 987165831, now seen corresponding path program 1 times [2024-10-13 12:29:08,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:29:08,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [762694071] [2024-10-13 12:29:08,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:29:08,544 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 [2024-10-13 12:29:08,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:29:08,547 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:29:08,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-10-13 12:29:08,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:29:08,657 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 12:29:08,658 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:29:08,665 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 [2024-10-13 12:29:08,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:29:08,696 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:29:08,696 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:29:08,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [762694071] [2024-10-13 12:29:08,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [762694071] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:29:08,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:29:08,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:29:08,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211533079] [2024-10-13 12:29:08,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:29:08,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:29:08,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:29:08,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:29:08,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:29:08,831 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 85 [2024-10-13 12:29:08,832 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) [2024-10-13 12:29:08,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:29:08,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 85 [2024-10-13 12:29:08,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:29:09,139 INFO L124 PetriNetUnfolderBase]: 483/955 cut-off events. [2024-10-13 12:29:09,140 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-13 12:29:09,142 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. [2024-10-13 12:29:09,148 INFO L140 encePairwiseOnDemand]: 80/85 looper letters, 37 selfloop transitions, 4 changer transitions 0/79 dead transitions. [2024-10-13 12:29:09,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 79 transitions, 278 flow [2024-10-13 12:29:09,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:29:09,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:29:09,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 219 transitions. [2024-10-13 12:29:09,150 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6441176470588236 [2024-10-13 12:29:09,150 INFO L175 Difference]: Start difference. First operand has 82 places, 81 transitions, 200 flow. Second operand 4 states and 219 transitions. [2024-10-13 12:29:09,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 79 transitions, 278 flow [2024-10-13 12:29:09,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 79 transitions, 272 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 12:29:09,153 INFO L231 Difference]: Finished difference. Result has 81 places, 79 transitions, 198 flow [2024-10-13 12:29:09,153 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} [2024-10-13 12:29:09,154 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, -3 predicate places. [2024-10-13 12:29:09,154 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 79 transitions, 198 flow [2024-10-13 12:29:09,154 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) [2024-10-13 12:29:09,154 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:29:09,155 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:29:09,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2024-10-13 12:29:09,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:29:09,356 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-13 12:29:09,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:29:09,357 INFO L85 PathProgramCache]: Analyzing trace with hash 987165830, now seen corresponding path program 1 times [2024-10-13 12:29:09,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:29:09,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1462484689] [2024-10-13 12:29:09,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:29:09,357 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 [2024-10-13 12:29:09,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:29:09,361 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:29:09,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-10-13 12:29:09,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:29:09,446 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 12:29:09,447 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:29:09,453 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 [2024-10-13 12:29:09,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:29:09,476 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:29:09,477 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:29:09,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1462484689] [2024-10-13 12:29:09,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1462484689] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:29:09,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:29:09,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:29:09,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557853507] [2024-10-13 12:29:09,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:29:09,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:29:09,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:29:09,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:29:09,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:29:09,622 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 85 [2024-10-13 12:29:09,622 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) [2024-10-13 12:29:09,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:29:09,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 85 [2024-10-13 12:29:09,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:29:09,940 INFO L124 PetriNetUnfolderBase]: 483/953 cut-off events. [2024-10-13 12:29:09,941 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 12:29:09,943 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. [2024-10-13 12:29:09,948 INFO L140 encePairwiseOnDemand]: 78/85 looper letters, 34 selfloop transitions, 7 changer transitions 0/77 dead transitions. [2024-10-13 12:29:09,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 77 transitions, 276 flow [2024-10-13 12:29:09,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:29:09,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:29:09,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 254 transitions. [2024-10-13 12:29:09,951 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5976470588235294 [2024-10-13 12:29:09,951 INFO L175 Difference]: Start difference. First operand has 81 places, 79 transitions, 198 flow. Second operand 5 states and 254 transitions. [2024-10-13 12:29:09,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 77 transitions, 276 flow [2024-10-13 12:29:09,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 77 transitions, 268 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 12:29:09,954 INFO L231 Difference]: Finished difference. Result has 80 places, 77 transitions, 200 flow [2024-10-13 12:29:09,954 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} [2024-10-13 12:29:09,955 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, -4 predicate places. [2024-10-13 12:29:09,955 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 77 transitions, 200 flow [2024-10-13 12:29:09,955 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) [2024-10-13 12:29:09,955 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:29:09,956 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-10-13 12:29:09,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2024-10-13 12:29:10,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:29:10,157 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-13 12:29:10,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:29:10,157 INFO L85 PathProgramCache]: Analyzing trace with hash 987167839, now seen corresponding path program 1 times [2024-10-13 12:29:10,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:29:10,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [533048924] [2024-10-13 12:29:10,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:29:10,158 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 [2024-10-13 12:29:10,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:29:10,161 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:29:10,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-10-13 12:29:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:29:10,229 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 12:29:10,230 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:29:10,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:29:10,239 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:29:10,239 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:29:10,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [533048924] [2024-10-13 12:29:10,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [533048924] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:29:10,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:29:10,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:29:10,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178331936] [2024-10-13 12:29:10,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:29:10,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:29:10,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:29:10,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:29:10,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:29:10,246 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 85 [2024-10-13 12:29:10,246 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) [2024-10-13 12:29:10,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:29:10,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 85 [2024-10-13 12:29:10,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:29:10,516 INFO L124 PetriNetUnfolderBase]: 482/971 cut-off events. [2024-10-13 12:29:10,517 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-13 12:29:10,522 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. [2024-10-13 12:29:10,529 INFO L140 encePairwiseOnDemand]: 82/85 looper letters, 40 selfloop transitions, 3 changer transitions 0/81 dead transitions. [2024-10-13 12:29:10,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 81 transitions, 300 flow [2024-10-13 12:29:10,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:29:10,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:29:10,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 191 transitions. [2024-10-13 12:29:10,532 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7490196078431373 [2024-10-13 12:29:10,532 INFO L175 Difference]: Start difference. First operand has 80 places, 77 transitions, 200 flow. Second operand 3 states and 191 transitions. [2024-10-13 12:29:10,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 81 transitions, 300 flow [2024-10-13 12:29:10,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 81 transitions, 280 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-13 12:29:10,535 INFO L231 Difference]: Finished difference. Result has 79 places, 77 transitions, 197 flow [2024-10-13 12:29:10,535 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} [2024-10-13 12:29:10,536 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, -5 predicate places. [2024-10-13 12:29:10,536 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 77 transitions, 197 flow [2024-10-13 12:29:10,537 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) [2024-10-13 12:29:10,537 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:29:10,537 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:29:10,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2024-10-13 12:29:10,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:29:10,738 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-13 12:29:10,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:29:10,738 INFO L85 PathProgramCache]: Analyzing trace with hash -521400729, now seen corresponding path program 1 times [2024-10-13 12:29:10,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:29:10,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1965681444] [2024-10-13 12:29:10,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:29:10,739 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 [2024-10-13 12:29:10,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:29:10,741 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:29:10,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-10-13 12:29:10,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:29:10,907 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-13 12:29:10,909 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:29:11,009 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-10-13 12:29:11,009 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 [2024-10-13 12:29:11,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:29:11,111 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:29:11,111 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:29:11,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1965681444] [2024-10-13 12:29:11,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1965681444] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:29:11,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:29:11,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:29:11,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578422782] [2024-10-13 12:29:11,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:29:11,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:29:11,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:29:11,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:29:11,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:29:11,336 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 85 [2024-10-13 12:29:11,337 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) [2024-10-13 12:29:11,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:29:11,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 85 [2024-10-13 12:29:11,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:29:11,674 INFO L124 PetriNetUnfolderBase]: 482/967 cut-off events. [2024-10-13 12:29:11,674 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-10-13 12:29:11,677 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. [2024-10-13 12:29:11,683 INFO L140 encePairwiseOnDemand]: 79/85 looper letters, 33 selfloop transitions, 6 changer transitions 0/75 dead transitions. [2024-10-13 12:29:11,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 75 transitions, 271 flow [2024-10-13 12:29:11,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:29:11,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:29:11,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 262 transitions. [2024-10-13 12:29:11,685 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6164705882352941 [2024-10-13 12:29:11,685 INFO L175 Difference]: Start difference. First operand has 79 places, 77 transitions, 197 flow. Second operand 5 states and 262 transitions. [2024-10-13 12:29:11,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 75 transitions, 271 flow [2024-10-13 12:29:11,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 75 transitions, 268 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 12:29:11,689 INFO L231 Difference]: Finished difference. Result has 80 places, 75 transitions, 202 flow [2024-10-13 12:29:11,690 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} [2024-10-13 12:29:11,691 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, -4 predicate places. [2024-10-13 12:29:11,693 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 75 transitions, 202 flow [2024-10-13 12:29:11,693 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) [2024-10-13 12:29:11,693 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:29:11,694 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:29:11,701 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-10-13 12:29:11,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:29:11,895 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-13 12:29:11,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:29:11,896 INFO L85 PathProgramCache]: Analyzing trace with hash -521400728, now seen corresponding path program 1 times [2024-10-13 12:29:11,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:29:11,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [54459732] [2024-10-13 12:29:11,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:29:11,897 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 [2024-10-13 12:29:11,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:29:11,900 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:29:11,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-10-13 12:29:12,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:29:12,074 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-13 12:29:12,076 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:29:12,220 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-10-13 12:29:12,221 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 [2024-10-13 12:29:12,240 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-13 12:29:12,241 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 [2024-10-13 12:29:12,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:29:12,336 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:29:12,336 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:29:12,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [54459732] [2024-10-13 12:29:12,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [54459732] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:29:12,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:29:12,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 12:29:12,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599033261] [2024-10-13 12:29:12,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:29:12,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 12:29:12,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:29:12,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 12:29:12,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-13 12:29:12,678 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 85 [2024-10-13 12:29:12,679 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) [2024-10-13 12:29:12,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:29:12,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 85 [2024-10-13 12:29:12,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:29:13,122 INFO L124 PetriNetUnfolderBase]: 483/997 cut-off events. [2024-10-13 12:29:13,122 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-10-13 12:29:13,125 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. [2024-10-13 12:29:13,130 INFO L140 encePairwiseOnDemand]: 78/85 looper letters, 41 selfloop transitions, 7 changer transitions 0/82 dead transitions. [2024-10-13 12:29:13,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 82 transitions, 330 flow [2024-10-13 12:29:13,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:29:13,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:29:13,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 272 transitions. [2024-10-13 12:29:13,132 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.64 [2024-10-13 12:29:13,132 INFO L175 Difference]: Start difference. First operand has 80 places, 75 transitions, 202 flow. Second operand 5 states and 272 transitions. [2024-10-13 12:29:13,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 82 transitions, 330 flow [2024-10-13 12:29:13,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 82 transitions, 310 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-13 12:29:13,135 INFO L231 Difference]: Finished difference. Result has 83 places, 80 transitions, 250 flow [2024-10-13 12:29:13,135 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} [2024-10-13 12:29:13,136 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, -1 predicate places. [2024-10-13 12:29:13,136 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 80 transitions, 250 flow [2024-10-13 12:29:13,137 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) [2024-10-13 12:29:13,137 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:29:13,137 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:29:13,144 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-10-13 12:29:13,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:29:13,338 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-13 12:29:13,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:29:13,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1016447015, now seen corresponding path program 1 times [2024-10-13 12:29:13,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:29:13,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1855899985] [2024-10-13 12:29:13,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:29:13,339 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 [2024-10-13 12:29:13,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:29:13,340 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:29:13,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-10-13 12:29:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:29:13,579 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-10-13 12:29:13,583 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:29:13,710 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 [2024-10-13 12:29:13,729 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 [2024-10-13 12:29:13,811 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 [2024-10-13 12:29:13,825 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 [2024-10-13 12:29:13,907 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-13 12:29:13,908 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 [2024-10-13 12:29:13,922 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 [2024-10-13 12:29:14,013 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 [2024-10-13 12:29:14,035 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 [2024-10-13 12:29:14,122 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 [2024-10-13 12:29:14,134 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 [2024-10-13 12:29:14,193 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 [2024-10-13 12:29:14,214 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 [2024-10-13 12:29:14,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:29:14,301 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:29:14,301 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:29:14,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1855899985] [2024-10-13 12:29:14,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1855899985] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:29:14,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:29:14,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-13 12:29:14,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119061318] [2024-10-13 12:29:14,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:29:14,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 12:29:14,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:29:14,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 12:29:14,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-10-13 12:29:15,190 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 85 [2024-10-13 12:29:15,191 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) [2024-10-13 12:29:15,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:29:15,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 85 [2024-10-13 12:29:15,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:29:16,090 INFO L124 PetriNetUnfolderBase]: 483/996 cut-off events. [2024-10-13 12:29:16,092 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-13 12:29:16,095 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. [2024-10-13 12:29:16,103 INFO L140 encePairwiseOnDemand]: 73/85 looper letters, 58 selfloop transitions, 11 changer transitions 0/95 dead transitions. [2024-10-13 12:29:16,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 95 transitions, 422 flow [2024-10-13 12:29:16,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 12:29:16,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 12:29:16,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 410 transitions. [2024-10-13 12:29:16,106 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4385026737967914 [2024-10-13 12:29:16,106 INFO L175 Difference]: Start difference. First operand has 83 places, 80 transitions, 250 flow. Second operand 11 states and 410 transitions. [2024-10-13 12:29:16,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 95 transitions, 422 flow [2024-10-13 12:29:16,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 95 transitions, 420 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 12:29:16,110 INFO L231 Difference]: Finished difference. Result has 97 places, 85 transitions, 306 flow [2024-10-13 12:29:16,110 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} [2024-10-13 12:29:16,110 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 13 predicate places. [2024-10-13 12:29:16,111 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 85 transitions, 306 flow [2024-10-13 12:29:16,111 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) [2024-10-13 12:29:16,111 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:29:16,111 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:29:16,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2024-10-13 12:29:16,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:29:16,314 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-13 12:29:16,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:29:16,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1016447014, now seen corresponding path program 1 times [2024-10-13 12:29:16,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:29:16,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [296521040] [2024-10-13 12:29:16,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:29:16,315 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 [2024-10-13 12:29:16,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:29:16,316 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:29:16,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-10-13 12:29:16,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:29:16,497 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-13 12:29:16,500 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:29:16,585 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 [2024-10-13 12:29:16,627 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 [2024-10-13 12:29:16,698 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-13 12:29:16,698 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 [2024-10-13 12:29:16,768 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 [2024-10-13 12:29:16,829 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 [2024-10-13 12:29:16,864 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 [2024-10-13 12:29:16,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:29:16,937 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:29:16,937 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:29:16,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [296521040] [2024-10-13 12:29:16,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [296521040] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:29:16,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:29:16,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-13 12:29:16,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961337333] [2024-10-13 12:29:16,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:29:16,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 12:29:16,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:29:16,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 12:29:16,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-10-13 12:29:17,873 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 85 [2024-10-13 12:29:17,874 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) [2024-10-13 12:29:17,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:29:17,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 85 [2024-10-13 12:29:17,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:29:18,835 INFO L124 PetriNetUnfolderBase]: 483/994 cut-off events. [2024-10-13 12:29:18,836 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-10-13 12:29:18,840 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. [2024-10-13 12:29:18,846 INFO L140 encePairwiseOnDemand]: 74/85 looper letters, 44 selfloop transitions, 19 changer transitions 0/93 dead transitions. [2024-10-13 12:29:18,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 93 transitions, 460 flow [2024-10-13 12:29:18,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 12:29:18,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 12:29:18,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 458 transitions. [2024-10-13 12:29:18,851 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4898395721925134 [2024-10-13 12:29:18,851 INFO L175 Difference]: Start difference. First operand has 97 places, 85 transitions, 306 flow. Second operand 11 states and 458 transitions. [2024-10-13 12:29:18,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 93 transitions, 460 flow [2024-10-13 12:29:18,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 93 transitions, 456 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 12:29:18,856 INFO L231 Difference]: Finished difference. Result has 110 places, 90 transitions, 394 flow [2024-10-13 12:29:18,858 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} [2024-10-13 12:29:18,858 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 26 predicate places. [2024-10-13 12:29:18,859 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 90 transitions, 394 flow [2024-10-13 12:29:18,859 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) [2024-10-13 12:29:18,860 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:29:18,860 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:29:18,867 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2024-10-13 12:29:19,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:29:19,061 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-13 12:29:19,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:29:19,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1445086692, now seen corresponding path program 1 times [2024-10-13 12:29:19,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:29:19,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1201501744] [2024-10-13 12:29:19,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:29:19,062 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 [2024-10-13 12:29:19,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:29:19,066 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:29:19,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-10-13 12:29:19,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:29:19,207 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-13 12:29:19,209 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:29:19,214 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 [2024-10-13 12:29:19,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:29:19,234 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:29:19,235 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:29:19,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1201501744] [2024-10-13 12:29:19,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1201501744] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:29:19,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:29:19,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:29:19,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409400251] [2024-10-13 12:29:19,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:29:19,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:29:19,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:29:19,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:29:19,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:29:19,363 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 85 [2024-10-13 12:29:19,364 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) [2024-10-13 12:29:19,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:29:19,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 85 [2024-10-13 12:29:19,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:29:19,664 INFO L124 PetriNetUnfolderBase]: 483/986 cut-off events. [2024-10-13 12:29:19,664 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2024-10-13 12:29:19,668 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. [2024-10-13 12:29:19,673 INFO L140 encePairwiseOnDemand]: 80/85 looper letters, 41 selfloop transitions, 12 changer transitions 0/88 dead transitions. [2024-10-13 12:29:19,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 88 transitions, 496 flow [2024-10-13 12:29:19,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:29:19,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:29:19,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 219 transitions. [2024-10-13 12:29:19,675 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6441176470588236 [2024-10-13 12:29:19,676 INFO L175 Difference]: Start difference. First operand has 110 places, 90 transitions, 394 flow. Second operand 4 states and 219 transitions. [2024-10-13 12:29:19,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 88 transitions, 496 flow [2024-10-13 12:29:19,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 88 transitions, 474 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-10-13 12:29:19,680 INFO L231 Difference]: Finished difference. Result has 106 places, 88 transitions, 392 flow [2024-10-13 12:29:19,680 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} [2024-10-13 12:29:19,682 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 22 predicate places. [2024-10-13 12:29:19,682 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 88 transitions, 392 flow [2024-10-13 12:29:19,683 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) [2024-10-13 12:29:19,683 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:29:19,684 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:29:19,691 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2024-10-13 12:29:19,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:29:19,888 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-13 12:29:19,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:29:19,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1445086693, now seen corresponding path program 1 times [2024-10-13 12:29:19,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:29:19,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1519934451] [2024-10-13 12:29:19,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:29:19,893 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 [2024-10-13 12:29:19,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:29:19,897 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:29:19,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-10-13 12:29:20,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:29:20,030 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-13 12:29:20,032 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:29:20,038 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 [2024-10-13 12:29:20,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:29:20,094 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:29:20,094 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:29:20,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1519934451] [2024-10-13 12:29:20,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1519934451] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:29:20,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:29:20,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:29:20,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931522010] [2024-10-13 12:29:20,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:29:20,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:29:20,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:29:20,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:29:20,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:29:20,332 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 85 [2024-10-13 12:29:20,333 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) [2024-10-13 12:29:20,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:29:20,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 85 [2024-10-13 12:29:20,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:29:20,664 INFO L124 PetriNetUnfolderBase]: 483/978 cut-off events. [2024-10-13 12:29:20,664 INFO L125 PetriNetUnfolderBase]: For 131/131 co-relation queries the response was YES. [2024-10-13 12:29:20,669 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. [2024-10-13 12:29:20,675 INFO L140 encePairwiseOnDemand]: 80/85 looper letters, 39 selfloop transitions, 12 changer transitions 0/86 dead transitions. [2024-10-13 12:29:20,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 86 transitions, 490 flow [2024-10-13 12:29:20,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:29:20,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:29:20,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 225 transitions. [2024-10-13 12:29:20,678 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6617647058823529 [2024-10-13 12:29:20,678 INFO L175 Difference]: Start difference. First operand has 106 places, 88 transitions, 392 flow. Second operand 4 states and 225 transitions. [2024-10-13 12:29:20,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 86 transitions, 490 flow [2024-10-13 12:29:20,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 86 transitions, 466 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 12:29:20,682 INFO L231 Difference]: Finished difference. Result has 104 places, 86 transitions, 388 flow [2024-10-13 12:29:20,683 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} [2024-10-13 12:29:20,685 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 20 predicate places. [2024-10-13 12:29:20,686 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 86 transitions, 388 flow [2024-10-13 12:29:20,686 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) [2024-10-13 12:29:20,686 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:29:20,686 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:29:20,695 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2024-10-13 12:29:20,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:29:20,887 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-13 12:29:20,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:29:20,887 INFO L85 PathProgramCache]: Analyzing trace with hash -2071939049, now seen corresponding path program 1 times [2024-10-13 12:29:20,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:29:20,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [444066920] [2024-10-13 12:29:20,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:29:20,888 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 [2024-10-13 12:29:20,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:29:20,892 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:29:20,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-10-13 12:29:21,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:29:21,057 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 12:29:21,058 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:29:21,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:29:21,080 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:29:21,124 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:29:21,124 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:29:21,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [444066920] [2024-10-13 12:29:21,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [444066920] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:29:21,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:29:21,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-10-13 12:29:21,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562409951] [2024-10-13 12:29:21,125 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:29:21,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 12:29:21,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:29:21,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 12:29:21,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-13 12:29:21,127 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 85 [2024-10-13 12:29:21,127 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) [2024-10-13 12:29:21,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:29:21,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 85 [2024-10-13 12:29:21,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:29:21,654 INFO L124 PetriNetUnfolderBase]: 483/1028 cut-off events. [2024-10-13 12:29:21,654 INFO L125 PetriNetUnfolderBase]: For 217/217 co-relation queries the response was YES. [2024-10-13 12:29:21,657 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. [2024-10-13 12:29:21,665 INFO L140 encePairwiseOnDemand]: 81/85 looper letters, 57 selfloop transitions, 12 changer transitions 0/104 dead transitions. [2024-10-13 12:29:21,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 104 transitions, 674 flow [2024-10-13 12:29:21,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 12:29:21,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 12:29:21,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 354 transitions. [2024-10-13 12:29:21,668 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6941176470588235 [2024-10-13 12:29:21,668 INFO L175 Difference]: Start difference. First operand has 104 places, 86 transitions, 388 flow. Second operand 6 states and 354 transitions. [2024-10-13 12:29:21,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 104 transitions, 674 flow [2024-10-13 12:29:21,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 104 transitions, 622 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 12:29:21,672 INFO L231 Difference]: Finished difference. Result has 110 places, 92 transitions, 468 flow [2024-10-13 12:29:21,672 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} [2024-10-13 12:29:21,673 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 26 predicate places. [2024-10-13 12:29:21,673 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 92 transitions, 468 flow [2024-10-13 12:29:21,674 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) [2024-10-13 12:29:21,674 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:29:21,674 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:29:21,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2024-10-13 12:29:21,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:29:21,875 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-13 12:29:21,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:29:21,875 INFO L85 PathProgramCache]: Analyzing trace with hash 2074200430, now seen corresponding path program 1 times [2024-10-13 12:29:21,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:29:21,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [896482487] [2024-10-13 12:29:21,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:29:21,876 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 [2024-10-13 12:29:21,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:29:21,877 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:29:21,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2024-10-13 12:29:22,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:29:22,263 INFO L255 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-13 12:29:22,266 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:29:22,278 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 [2024-10-13 12:29:22,438 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 [2024-10-13 12:29:22,502 INFO L349 Elim1Store]: treesize reduction 90, result has 30.2 percent of original size [2024-10-13 12:29:22,502 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 [2024-10-13 12:29:22,551 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 [2024-10-13 12:29:22,611 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 [2024-10-13 12:29:22,640 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 [2024-10-13 12:29:22,677 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 [2024-10-13 12:29:22,699 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:29:22,699 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:29:22,868 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 [2024-10-13 12:29:22,889 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 12:29:22,890 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 [2024-10-13 12:29:22,910 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 12:29:22,911 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 [2024-10-13 12:29:22,930 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 [2024-10-13 12:29:24,388 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:29:24,388 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:29:24,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [896482487] [2024-10-13 12:29:24,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [896482487] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:29:24,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:29:24,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2024-10-13 12:29:24,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594340567] [2024-10-13 12:29:24,389 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:29:24,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-13 12:29:24,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:29:24,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-13 12:29:24,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=191, Unknown=9, NotChecked=28, Total=272 [2024-10-13 12:29:24,391 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 85 [2024-10-13 12:29:24,392 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) [2024-10-13 12:29:24,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:29:24,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 85 [2024-10-13 12:29:24,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:29:26,601 INFO L124 PetriNetUnfolderBase]: 1518/2684 cut-off events. [2024-10-13 12:29:26,602 INFO L125 PetriNetUnfolderBase]: For 174/174 co-relation queries the response was YES. [2024-10-13 12:29:26,609 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. [2024-10-13 12:29:26,626 INFO L140 encePairwiseOnDemand]: 76/85 looper letters, 62 selfloop transitions, 25 changer transitions 0/97 dead transitions. [2024-10-13 12:29:26,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 97 transitions, 656 flow [2024-10-13 12:29:26,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 12:29:26,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 12:29:26,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 201 transitions. [2024-10-13 12:29:26,629 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.21497326203208555 [2024-10-13 12:29:26,629 INFO L175 Difference]: Start difference. First operand has 110 places, 92 transitions, 468 flow. Second operand 11 states and 201 transitions. [2024-10-13 12:29:26,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 97 transitions, 656 flow [2024-10-13 12:29:26,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 97 transitions, 638 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-10-13 12:29:26,634 INFO L231 Difference]: Finished difference. Result has 118 places, 91 transitions, 496 flow [2024-10-13 12:29:26,634 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} [2024-10-13 12:29:26,635 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 34 predicate places. [2024-10-13 12:29:26,635 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 91 transitions, 496 flow [2024-10-13 12:29:26,635 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) [2024-10-13 12:29:26,636 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:29:26,636 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:29:26,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2024-10-13 12:29:26,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:29:26,837 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-13 12:29:26,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:29:26,837 INFO L85 PathProgramCache]: Analyzing trace with hash 2074200431, now seen corresponding path program 1 times [2024-10-13 12:29:26,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:29:26,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [77085904] [2024-10-13 12:29:26,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:29:26,838 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 [2024-10-13 12:29:26,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:29:26,840 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:29:26,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2024-10-13 12:29:27,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:29:27,374 INFO L255 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-10-13 12:29:27,382 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:29:27,408 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 [2024-10-13 12:29:27,414 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 [2024-10-13 12:29:27,687 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 [2024-10-13 12:29:27,719 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 [2024-10-13 12:29:27,803 INFO L349 Elim1Store]: treesize reduction 29, result has 46.3 percent of original size [2024-10-13 12:29:27,804 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 [2024-10-13 12:29:27,854 INFO L349 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2024-10-13 12:29:27,855 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 [2024-10-13 12:29:27,916 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 [2024-10-13 12:29:27,935 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 [2024-10-13 12:29:28,009 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 [2024-10-13 12:29:28,021 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 [2024-10-13 12:29:28,059 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 [2024-10-13 12:29:28,067 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 [2024-10-13 12:29:28,103 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 [2024-10-13 12:29:28,132 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:29:28,133 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:29:28,275 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 [2024-10-13 12:29:28,671 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 12:29:28,671 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 [2024-10-13 12:29:28,686 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 12:29:28,686 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 [2024-10-13 12:29:28,697 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 [2024-10-13 12:29:28,755 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 12:29:28,756 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 [2024-10-13 12:29:28,765 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 12:29:28,765 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 [2024-10-13 12:29:28,768 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-13 12:29:28,783 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 12:29:28,783 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 [2024-10-13 12:29:28,791 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-13 12:29:28,815 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 12:29:28,816 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 [2024-10-13 12:29:29,902 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-13 12:29:29,904 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-10-13 12:29:29,904 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:29:29,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [77085904] [2024-10-13 12:29:29,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [77085904] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:29:29,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:29:29,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2024-10-13 12:29:29,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526746767] [2024-10-13 12:29:29,905 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:29:29,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-13 12:29:29,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:29:29,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-13 12:29:29,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=193, Unknown=9, NotChecked=28, Total=272 [2024-10-13 12:29:31,810 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 85 [2024-10-13 12:29:31,811 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) [2024-10-13 12:29:31,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:29:31,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 85 [2024-10-13 12:29:31,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:29:35,163 INFO L124 PetriNetUnfolderBase]: 2199/3495 cut-off events. [2024-10-13 12:29:35,163 INFO L125 PetriNetUnfolderBase]: For 212/212 co-relation queries the response was YES. [2024-10-13 12:29:35,173 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. [2024-10-13 12:29:35,187 INFO L140 encePairwiseOnDemand]: 74/85 looper letters, 65 selfloop transitions, 27 changer transitions 0/96 dead transitions. [2024-10-13 12:29:35,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 96 transitions, 694 flow [2024-10-13 12:29:35,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-13 12:29:35,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-13 12:29:35,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 152 transitions. [2024-10-13 12:29:35,190 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.13755656108597286 [2024-10-13 12:29:35,190 INFO L175 Difference]: Start difference. First operand has 118 places, 91 transitions, 496 flow. Second operand 13 states and 152 transitions. [2024-10-13 12:29:35,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 96 transitions, 694 flow [2024-10-13 12:29:35,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 96 transitions, 599 flow, removed 14 selfloop flow, removed 13 redundant places. [2024-10-13 12:29:35,195 INFO L231 Difference]: Finished difference. Result has 119 places, 93 transitions, 469 flow [2024-10-13 12:29:35,196 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} [2024-10-13 12:29:35,197 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 35 predicate places. [2024-10-13 12:29:35,197 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 93 transitions, 469 flow [2024-10-13 12:29:35,197 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) [2024-10-13 12:29:35,197 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:29:35,197 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1] [2024-10-13 12:29:35,210 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2024-10-13 12:29:35,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:29:35,402 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-13 12:29:35,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:29:35,402 INFO L85 PathProgramCache]: Analyzing trace with hash -671049121, now seen corresponding path program 2 times [2024-10-13 12:29:35,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:29:35,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1553471458] [2024-10-13 12:29:35,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:29:35,403 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 [2024-10-13 12:29:35,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:29:35,405 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:29:35,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2024-10-13 12:29:36,024 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:29:36,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:29:36,050 INFO L255 TraceCheckSpWp]: Trace formula consists of 596 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 12:29:36,053 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:29:36,118 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:29:36,119 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:29:36,255 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:29:36,256 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:29:36,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1553471458] [2024-10-13 12:29:36,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1553471458] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:29:36,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:29:36,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2024-10-13 12:29:36,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831224933] [2024-10-13 12:29:36,256 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:29:36,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 12:29:36,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:29:36,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 12:29:36,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-10-13 12:29:36,260 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 85 [2024-10-13 12:29:36,261 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) [2024-10-13 12:29:36,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:29:36,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 85 [2024-10-13 12:29:36,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:29:37,347 INFO L124 PetriNetUnfolderBase]: 483/1136 cut-off events. [2024-10-13 12:29:37,348 INFO L125 PetriNetUnfolderBase]: For 513/513 co-relation queries the response was YES. [2024-10-13 12:29:37,351 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. [2024-10-13 12:29:37,355 INFO L140 encePairwiseOnDemand]: 81/85 looper letters, 93 selfloop transitions, 24 changer transitions 0/153 dead transitions. [2024-10-13 12:29:37,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 153 transitions, 1255 flow [2024-10-13 12:29:37,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-13 12:29:37,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-13 12:29:37,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 687 transitions. [2024-10-13 12:29:37,359 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6735294117647059 [2024-10-13 12:29:37,359 INFO L175 Difference]: Start difference. First operand has 119 places, 93 transitions, 469 flow. Second operand 12 states and 687 transitions. [2024-10-13 12:29:37,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 153 transitions, 1255 flow [2024-10-13 12:29:37,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 153 transitions, 1085 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-10-13 12:29:37,365 INFO L231 Difference]: Finished difference. Result has 127 places, 107 transitions, 665 flow [2024-10-13 12:29:37,366 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} [2024-10-13 12:29:37,366 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 43 predicate places. [2024-10-13 12:29:37,366 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 107 transitions, 665 flow [2024-10-13 12:29:37,367 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) [2024-10-13 12:29:37,367 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:29:37,367 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1] [2024-10-13 12:29:37,383 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2024-10-13 12:29:37,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:29:37,568 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-13 12:29:37,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:29:37,569 INFO L85 PathProgramCache]: Analyzing trace with hash 27780959, now seen corresponding path program 3 times [2024-10-13 12:29:37,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:29:37,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1490905613] [2024-10-13 12:29:37,571 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 12:29:37,571 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 [2024-10-13 12:29:37,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:29:37,575 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:29:37,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2024-10-13 12:29:50,066 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-10-13 12:29:50,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:29:50,167 INFO L255 TraceCheckSpWp]: Trace formula consists of 1400 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-13 12:29:50,171 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:29:50,385 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 2 proven. 415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:29:50,386 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:29:50,766 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 2 proven. 415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:29:50,766 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:29:50,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1490905613] [2024-10-13 12:29:50,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1490905613] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:29:50,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:29:50,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2024-10-13 12:29:50,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360931728] [2024-10-13 12:29:50,767 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:29:50,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-13 12:29:50,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:29:50,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-13 12:29:50,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2024-10-13 12:29:50,770 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 85 [2024-10-13 12:29:50,772 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) [2024-10-13 12:29:50,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:29:50,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 85 [2024-10-13 12:29:50,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:29:53,372 INFO L124 PetriNetUnfolderBase]: 483/1376 cut-off events. [2024-10-13 12:29:53,373 INFO L125 PetriNetUnfolderBase]: For 1780/1780 co-relation queries the response was YES. [2024-10-13 12:29:53,376 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. [2024-10-13 12:29:53,380 INFO L140 encePairwiseOnDemand]: 81/85 looper letters, 165 selfloop transitions, 48 changer transitions 0/249 dead transitions. [2024-10-13 12:29:53,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 249 transitions, 2317 flow [2024-10-13 12:29:53,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-13 12:29:53,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-13 12:29:53,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1353 transitions. [2024-10-13 12:29:53,386 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.663235294117647 [2024-10-13 12:29:53,386 INFO L175 Difference]: Start difference. First operand has 127 places, 107 transitions, 665 flow. Second operand 24 states and 1353 transitions. [2024-10-13 12:29:53,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 249 transitions, 2317 flow [2024-10-13 12:29:53,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 249 transitions, 2305 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 12:29:53,398 INFO L231 Difference]: Finished difference. Result has 160 places, 133 transitions, 1219 flow [2024-10-13 12:29:53,399 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} [2024-10-13 12:29:53,399 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 76 predicate places. [2024-10-13 12:29:53,400 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 133 transitions, 1219 flow [2024-10-13 12:29:53,400 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) [2024-10-13 12:29:53,401 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:29:53,401 INFO L204 CegarLoopForPetriNet]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 2, 1, 1, 1, 1, 1] [2024-10-13 12:29:53,470 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2024-10-13 12:29:53,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:29:53,602 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-10-13 12:29:53,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:29:53,602 INFO L85 PathProgramCache]: Analyzing trace with hash -428654241, now seen corresponding path program 4 times [2024-10-13 12:29:53,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:29:53,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [148831783] [2024-10-13 12:29:53,603 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 12:29:53,603 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 [2024-10-13 12:29:53,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:29:53,605 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:29:53,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process