./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing-deref.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing-deref.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 dda5467f7679a243042daf02aae11f74f39b907c2525dfc042cb8ad8b69dcfc9 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 18:10:56,431 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 18:10:56,521 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 18:10:56,527 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 18:10:56,528 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 18:10:56,573 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 18:10:56,574 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 18:10:56,574 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 18:10:56,575 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 18:10:56,577 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 18:10:56,577 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 18:10:56,577 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 18:10:56,578 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 18:10:56,578 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 18:10:56,579 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 18:10:56,579 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 18:10:56,579 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 18:10:56,580 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 18:10:56,583 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 18:10:56,583 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 18:10:56,584 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 18:10:56,584 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 18:10:56,588 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 18:10:56,589 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 18:10:56,589 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 18:10:56,589 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 18:10:56,590 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 18:10:56,590 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 18:10:56,590 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 18:10:56,591 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 18:10:56,591 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 18:10:56,591 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 18:10:56,591 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 18:10:56,592 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:10:56,592 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 18:10:56,592 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 18:10:56,593 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 18:10:56,593 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 18:10:56,593 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 18:10:56,593 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 18:10:56,594 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 18:10:56,595 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 18:10:56,595 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dda5467f7679a243042daf02aae11f74f39b907c2525dfc042cb8ad8b69dcfc9 [2024-11-10 18:10:56,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 18:10:56,912 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 18:10:56,916 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 18:10:56,918 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 18:10:56,918 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 18:10:56,920 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing-deref.i [2024-11-10 18:10:58,537 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 18:10:58,863 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 18:10:58,864 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing-deref.i [2024-11-10 18:10:58,896 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88748d6f4/1cbbc02320e34b288b31f2edf4077988/FLAG9f35aebaf [2024-11-10 18:10:58,910 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88748d6f4/1cbbc02320e34b288b31f2edf4077988 [2024-11-10 18:10:58,912 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 18:10:58,914 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 18:10:58,915 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 18:10:58,915 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 18:10:58,921 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 18:10:58,922 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:10:58" (1/1) ... [2024-11-10 18:10:58,922 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55c16142 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:10:58, skipping insertion in model container [2024-11-10 18:10:58,923 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:10:58" (1/1) ... [2024-11-10 18:10:58,980 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 18:10:59,485 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 18:10:59,486 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 18:10:59,486 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 18:10:59,487 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 18:10:59,532 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:10:59,583 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-11-10 18:10:59,584 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@71393e73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:10:59, skipping insertion in model container [2024-11-10 18:10:59,585 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 18:10:59,585 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-10 18:10:59,587 INFO L158 Benchmark]: Toolchain (without parser) took 672.58ms. Allocated memory is still 155.2MB. Free memory was 95.9MB in the beginning and 75.0MB in the end (delta: 20.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-10 18:10:59,588 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 155.2MB. Free memory is still 120.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 18:10:59,589 INFO L158 Benchmark]: CACSL2BoogieTranslator took 670.25ms. Allocated memory is still 155.2MB. Free memory was 95.6MB in the beginning and 75.0MB in the end (delta: 20.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-10 18:10:59,590 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 155.2MB. Free memory is still 120.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 670.25ms. Allocated memory is still 155.2MB. Free memory was 95.6MB in the beginning and 75.0MB in the end (delta: 20.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1051]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing-deref.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 dda5467f7679a243042daf02aae11f74f39b907c2525dfc042cb8ad8b69dcfc9 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 18:11:01,839 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 18:11:01,935 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-10 18:11:01,942 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 18:11:01,942 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 18:11:01,971 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 18:11:01,972 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 18:11:01,973 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 18:11:01,973 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 18:11:01,977 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 18:11:01,978 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 18:11:01,978 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 18:11:01,979 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 18:11:01,979 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 18:11:01,979 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 18:11:01,980 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 18:11:01,980 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 18:11:01,980 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 18:11:01,980 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 18:11:01,981 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 18:11:01,981 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 18:11:01,983 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 18:11:01,983 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 18:11:01,983 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 18:11:01,984 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 18:11:01,984 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-10 18:11:01,984 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 18:11:01,985 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-10 18:11:01,985 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 18:11:01,985 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 18:11:01,985 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 18:11:01,986 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 18:11:01,986 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 18:11:01,986 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 18:11:01,987 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 18:11:01,987 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:11:01,988 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 18:11:01,988 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 18:11:01,989 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-10 18:11:01,989 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-10 18:11:01,990 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 18:11:01,990 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 18:11:01,990 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 18:11:01,990 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 18:11:01,991 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dda5467f7679a243042daf02aae11f74f39b907c2525dfc042cb8ad8b69dcfc9 [2024-11-10 18:11:02,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 18:11:02,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 18:11:02,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 18:11:02,344 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 18:11:02,346 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 18:11:02,348 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing-deref.i [2024-11-10 18:11:03,979 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 18:11:04,333 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 18:11:04,334 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing-deref.i [2024-11-10 18:11:04,364 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15568a05b/9d9cc7b89beb41c1a0c1d0d01ea78ced/FLAG5d2ed4410 [2024-11-10 18:11:04,381 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15568a05b/9d9cc7b89beb41c1a0c1d0d01ea78ced [2024-11-10 18:11:04,386 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 18:11:04,388 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 18:11:04,391 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 18:11:04,391 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 18:11:04,396 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 18:11:04,397 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:11:04" (1/1) ... [2024-11-10 18:11:04,398 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@671c08c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:04, skipping insertion in model container [2024-11-10 18:11:04,398 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:11:04" (1/1) ... [2024-11-10 18:11:04,460 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 18:11:04,950 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 18:11:04,951 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 18:11:04,954 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 18:11:04,955 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 18:11:04,994 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:11:05,060 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-10 18:11:05,087 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 18:11:05,151 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 18:11:05,152 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 18:11:05,152 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 18:11:05,153 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 18:11:05,162 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:11:05,195 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 18:11:05,240 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 18:11:05,241 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 18:11:05,241 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 18:11:05,241 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 18:11:05,251 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:11:05,340 INFO L204 MainTranslator]: Completed translation [2024-11-10 18:11:05,341 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:05 WrapperNode [2024-11-10 18:11:05,341 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 18:11:05,342 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 18:11:05,343 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 18:11:05,343 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 18:11:05,350 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:05" (1/1) ... [2024-11-10 18:11:05,379 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:05" (1/1) ... [2024-11-10 18:11:05,424 INFO L138 Inliner]: procedures = 284, calls = 126, calls flagged for inlining = 12, calls inlined = 13, statements flattened = 292 [2024-11-10 18:11:05,425 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 18:11:05,425 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 18:11:05,425 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 18:11:05,426 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 18:11:05,440 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:05" (1/1) ... [2024-11-10 18:11:05,441 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:05" (1/1) ... [2024-11-10 18:11:05,452 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:05" (1/1) ... [2024-11-10 18:11:05,497 INFO L175 MemorySlicer]: Split 100 memory accesses to 4 slices as follows [2, 5, 2, 91]. 91 percent of accesses are in the largest equivalence class. The 77 initializations are split as follows [2, 5, 0, 70]. The 13 writes are split as follows [0, 0, 1, 12]. [2024-11-10 18:11:05,498 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:05" (1/1) ... [2024-11-10 18:11:05,498 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:05" (1/1) ... [2024-11-10 18:11:05,517 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:05" (1/1) ... [2024-11-10 18:11:05,518 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:05" (1/1) ... [2024-11-10 18:11:05,522 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:05" (1/1) ... [2024-11-10 18:11:05,524 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:05" (1/1) ... [2024-11-10 18:11:05,530 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 18:11:05,531 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 18:11:05,531 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 18:11:05,531 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 18:11:05,532 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:05" (1/1) ... [2024-11-10 18:11:05,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:11:05,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:11:05,594 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 18:11:05,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 18:11:05,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-10 18:11:05,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-10 18:11:05,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-10 18:11:05,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2024-11-10 18:11:05,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-10 18:11:05,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-10 18:11:05,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-10 18:11:05,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-10 18:11:05,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-10 18:11:05,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 18:11:05,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-10 18:11:05,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-10 18:11:05,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-10 18:11:05,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2024-11-10 18:11:05,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-10 18:11:05,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-10 18:11:05,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-10 18:11:05,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-10 18:11:05,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-10 18:11:05,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-10 18:11:05,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-10 18:11:05,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-11-10 18:11:05,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-11-10 18:11:05,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2024-11-10 18:11:05,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2024-11-10 18:11:05,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2024-11-10 18:11:05,653 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-10 18:11:05,653 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-10 18:11:05,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 18:11:05,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 18:11:05,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-10 18:11:05,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-10 18:11:05,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-10 18:11:05,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-10 18:11:05,653 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-10 18:11:05,654 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-10 18:11:05,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 18:11:05,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 18:11:05,656 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 18:11:05,908 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 18:11:05,911 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 18:11:06,688 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1072: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2024-11-10 18:11:06,689 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1072-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2024-11-10 18:11:06,881 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 18:11:06,882 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 18:11:08,984 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 18:11:08,985 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 18:11:08,985 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:11:08 BoogieIcfgContainer [2024-11-10 18:11:08,986 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 18:11:08,990 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 18:11:08,990 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 18:11:08,994 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 18:11:08,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 06:11:04" (1/3) ... [2024-11-10 18:11:08,996 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@577e1081 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:11:08, skipping insertion in model container [2024-11-10 18:11:08,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:05" (2/3) ... [2024-11-10 18:11:08,997 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@577e1081 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:11:08, skipping insertion in model container [2024-11-10 18:11:08,998 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:11:08" (3/3) ... [2024-11-10 18:11:09,000 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_92-evilcollapse_racing-deref.i [2024-11-10 18:11:09,017 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 18:11:09,017 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 48 error locations. [2024-11-10 18:11:09,018 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 18:11:09,125 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-10 18:11:09,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 153 transitions, 313 flow [2024-11-10 18:11:09,247 INFO L124 PetriNetUnfolderBase]: 26/171 cut-off events. [2024-11-10 18:11:09,248 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 18:11:09,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 171 events. 26/171 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 579 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 96. Up to 4 conditions per place. [2024-11-10 18:11:09,256 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 153 transitions, 313 flow [2024-11-10 18:11:09,264 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 153 transitions, 313 flow [2024-11-10 18:11:09,276 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:11:09,285 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;@626e910d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:11:09,286 INFO L334 AbstractCegarLoop]: Starting to check reachability of 64 error locations. [2024-11-10 18:11:09,296 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 18:11:09,297 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-10 18:11:09,297 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:11:09,298 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:09,299 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 18:11:09,299 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-10 18:11:09,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:09,305 INFO L85 PathProgramCache]: Analyzing trace with hash 25161930, now seen corresponding path program 1 times [2024-11-10 18:11:09,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:11:09,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [922600015] [2024-11-10 18:11:09,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:09,321 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 18:11:09,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:11:09,325 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-10 18:11:09,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-10 18:11:09,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:09,523 INFO L255 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 18:11:09,528 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:11:09,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:11:09,605 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:11:09,606 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:11:09,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [922600015] [2024-11-10 18:11:09,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [922600015] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:11:09,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:11:09,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:11:09,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83368658] [2024-11-10 18:11:09,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:11:09,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:11:09,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:11:09,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:11:09,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:11:09,890 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 153 [2024-11-10 18:11:09,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 153 transitions, 313 flow. Second operand has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:09,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:09,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 153 [2024-11-10 18:11:09,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:10,499 INFO L124 PetriNetUnfolderBase]: 120/495 cut-off events. [2024-11-10 18:11:10,499 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 18:11:10,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 763 conditions, 495 events. 120/495 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2689 event pairs, 61 based on Foata normal form. 131/559 useless extension candidates. Maximal degree in co-relation 668. Up to 170 conditions per place. [2024-11-10 18:11:10,509 INFO L140 encePairwiseOnDemand]: 126/153 looper letters, 64 selfloop transitions, 4 changer transitions 0/152 dead transitions. [2024-11-10 18:11:10,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 152 transitions, 447 flow [2024-11-10 18:11:10,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:11:10,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 18:11:10,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 441 transitions. [2024-11-10 18:11:10,528 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7205882352941176 [2024-11-10 18:11:10,531 INFO L175 Difference]: Start difference. First operand has 132 places, 153 transitions, 313 flow. Second operand 4 states and 441 transitions. [2024-11-10 18:11:10,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 152 transitions, 447 flow [2024-11-10 18:11:10,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 152 transitions, 447 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 18:11:10,541 INFO L231 Difference]: Finished difference. Result has 131 places, 130 transitions, 281 flow [2024-11-10 18:11:10,543 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=281, PETRI_PLACES=131, PETRI_TRANSITIONS=130} [2024-11-10 18:11:10,547 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, -1 predicate places. [2024-11-10 18:11:10,547 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 130 transitions, 281 flow [2024-11-10 18:11:10,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:10,548 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:10,548 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 18:11:10,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2024-11-10 18:11:10,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 18:11:10,752 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-10 18:11:10,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:10,753 INFO L85 PathProgramCache]: Analyzing trace with hash 25161931, now seen corresponding path program 1 times [2024-11-10 18:11:10,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:11:10,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1977155874] [2024-11-10 18:11:10,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:10,754 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 18:11:10,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:11:10,761 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-10 18:11:10,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-10 18:11:10,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:10,928 INFO L255 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-10 18:11:10,930 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:11:11,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:11:11,019 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:11:11,019 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:11:11,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1977155874] [2024-11-10 18:11:11,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1977155874] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:11:11,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:11:11,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:11:11,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570275831] [2024-11-10 18:11:11,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:11:11,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:11:11,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:11:11,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:11:11,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:11:11,354 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 153 [2024-11-10 18:11:11,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 130 transitions, 281 flow. Second operand has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:11,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:11,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 153 [2024-11-10 18:11:11,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:11,790 INFO L124 PetriNetUnfolderBase]: 122/538 cut-off events. [2024-11-10 18:11:11,791 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-11-10 18:11:11,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 864 conditions, 538 events. 122/538 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2881 event pairs, 100 based on Foata normal form. 3/456 useless extension candidates. Maximal degree in co-relation 743. Up to 264 conditions per place. [2024-11-10 18:11:11,799 INFO L140 encePairwiseOnDemand]: 145/153 looper letters, 47 selfloop transitions, 5 changer transitions 0/134 dead transitions. [2024-11-10 18:11:11,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 134 transitions, 399 flow [2024-11-10 18:11:11,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:11:11,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 18:11:11,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 399 transitions. [2024-11-10 18:11:11,805 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6519607843137255 [2024-11-10 18:11:11,806 INFO L175 Difference]: Start difference. First operand has 131 places, 130 transitions, 281 flow. Second operand 4 states and 399 transitions. [2024-11-10 18:11:11,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 134 transitions, 399 flow [2024-11-10 18:11:11,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 134 transitions, 387 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 18:11:11,814 INFO L231 Difference]: Finished difference. Result has 133 places, 134 transitions, 314 flow [2024-11-10 18:11:11,815 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=314, PETRI_PLACES=133, PETRI_TRANSITIONS=134} [2024-11-10 18:11:11,815 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, 1 predicate places. [2024-11-10 18:11:11,816 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 134 transitions, 314 flow [2024-11-10 18:11:11,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:11,817 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:11,817 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:11:11,823 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 (3)] Forceful destruction successful, exit code 0 [2024-11-10 18:11:12,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 18:11:12,022 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-10 18:11:12,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:12,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1821497569, now seen corresponding path program 1 times [2024-11-10 18:11:12,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:11:12,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [924369086] [2024-11-10 18:11:12,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:12,025 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 18:11:12,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:11:12,027 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-10 18:11:12,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-10 18:11:12,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:12,224 INFO L255 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 18:11:12,226 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:11:12,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-10 18:11:12,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:11:12,267 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:11:12,267 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:11:12,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [924369086] [2024-11-10 18:11:12,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [924369086] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:11:12,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:11:12,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:11:12,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838086871] [2024-11-10 18:11:12,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:11:12,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:11:12,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:11:12,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:11:12,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:11:12,389 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 153 [2024-11-10 18:11:12,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 134 transitions, 314 flow. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:12,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:12,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 153 [2024-11-10 18:11:12,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:12,693 INFO L124 PetriNetUnfolderBase]: 122/537 cut-off events. [2024-11-10 18:11:12,694 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-10 18:11:12,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 849 conditions, 537 events. 122/537 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2871 event pairs, 100 based on Foata normal form. 0/452 useless extension candidates. Maximal degree in co-relation 813. Up to 259 conditions per place. [2024-11-10 18:11:12,700 INFO L140 encePairwiseOnDemand]: 150/153 looper letters, 44 selfloop transitions, 3 changer transitions 0/133 dead transitions. [2024-11-10 18:11:12,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 133 transitions, 406 flow [2024-11-10 18:11:12,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:11:12,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:11:12,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 314 transitions. [2024-11-10 18:11:12,703 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6840958605664488 [2024-11-10 18:11:12,704 INFO L175 Difference]: Start difference. First operand has 133 places, 134 transitions, 314 flow. Second operand 3 states and 314 transitions. [2024-11-10 18:11:12,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 133 transitions, 406 flow [2024-11-10 18:11:12,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 133 transitions, 403 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:11:12,709 INFO L231 Difference]: Finished difference. Result has 133 places, 133 transitions, 315 flow [2024-11-10 18:11:12,712 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=315, PETRI_PLACES=133, PETRI_TRANSITIONS=133} [2024-11-10 18:11:12,713 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, 1 predicate places. [2024-11-10 18:11:12,713 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 133 transitions, 315 flow [2024-11-10 18:11:12,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:12,714 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:12,714 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:11:12,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-11-10 18:11:12,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 18:11:12,919 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-10 18:11:12,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:12,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1821497570, now seen corresponding path program 1 times [2024-11-10 18:11:12,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:11:12,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [404584971] [2024-11-10 18:11:12,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:12,922 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 18:11:12,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:11:12,925 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-10 18:11:12,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-10 18:11:13,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:13,098 INFO L255 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 18:11:13,100 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:11:13,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-10 18:11:13,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:11:13,120 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:11:13,120 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:11:13,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [404584971] [2024-11-10 18:11:13,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [404584971] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:11:13,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:11:13,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:11:13,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541040028] [2024-11-10 18:11:13,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:11:13,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:11:13,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:11:13,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:11:13,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:11:13,298 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 153 [2024-11-10 18:11:13,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 133 transitions, 315 flow. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:13,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:13,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 153 [2024-11-10 18:11:13,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:13,592 INFO L124 PetriNetUnfolderBase]: 122/536 cut-off events. [2024-11-10 18:11:13,592 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-11-10 18:11:13,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 849 conditions, 536 events. 122/536 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2884 event pairs, 100 based on Foata normal form. 0/451 useless extension candidates. Maximal degree in co-relation 812. Up to 259 conditions per place. [2024-11-10 18:11:13,597 INFO L140 encePairwiseOnDemand]: 150/153 looper letters, 44 selfloop transitions, 3 changer transitions 0/132 dead transitions. [2024-11-10 18:11:13,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 132 transitions, 407 flow [2024-11-10 18:11:13,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:11:13,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:11:13,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 314 transitions. [2024-11-10 18:11:13,603 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6840958605664488 [2024-11-10 18:11:13,603 INFO L175 Difference]: Start difference. First operand has 133 places, 133 transitions, 315 flow. Second operand 3 states and 314 transitions. [2024-11-10 18:11:13,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 132 transitions, 407 flow [2024-11-10 18:11:13,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 132 transitions, 401 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:11:13,609 INFO L231 Difference]: Finished difference. Result has 132 places, 132 transitions, 313 flow [2024-11-10 18:11:13,610 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=313, PETRI_PLACES=132, PETRI_TRANSITIONS=132} [2024-11-10 18:11:13,611 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, 0 predicate places. [2024-11-10 18:11:13,611 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 132 transitions, 313 flow [2024-11-10 18:11:13,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:13,611 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:13,612 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:11:13,619 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-11-10 18:11:13,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 18:11:13,813 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-10 18:11:13,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:13,814 INFO L85 PathProgramCache]: Analyzing trace with hash 631850597, now seen corresponding path program 1 times [2024-11-10 18:11:13,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:11:13,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [689778274] [2024-11-10 18:11:13,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:13,817 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 18:11:13,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:11:13,820 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-10 18:11:13,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-11-10 18:11:14,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:14,058 INFO L255 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 18:11:14,060 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:11:14,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-10 18:11:14,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:11:14,079 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:11:14,080 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:11:14,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [689778274] [2024-11-10 18:11:14,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [689778274] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:11:14,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:11:14,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 18:11:14,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488017991] [2024-11-10 18:11:14,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:11:14,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:11:14,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:11:14,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:11:14,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:11:14,204 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 153 [2024-11-10 18:11:14,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 132 transitions, 313 flow. Second operand has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:14,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:14,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 153 [2024-11-10 18:11:14,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:14,524 INFO L124 PetriNetUnfolderBase]: 122/534 cut-off events. [2024-11-10 18:11:14,525 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-10 18:11:14,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 850 conditions, 534 events. 122/534 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2868 event pairs, 100 based on Foata normal form. 1/453 useless extension candidates. Maximal degree in co-relation 812. Up to 259 conditions per place. [2024-11-10 18:11:14,529 INFO L140 encePairwiseOnDemand]: 146/153 looper letters, 42 selfloop transitions, 7 changer transitions 0/130 dead transitions. [2024-11-10 18:11:14,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 130 transitions, 407 flow [2024-11-10 18:11:14,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 18:11:14,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 18:11:14,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 467 transitions. [2024-11-10 18:11:14,531 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6104575163398693 [2024-11-10 18:11:14,531 INFO L175 Difference]: Start difference. First operand has 132 places, 132 transitions, 313 flow. Second operand 5 states and 467 transitions. [2024-11-10 18:11:14,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 130 transitions, 407 flow [2024-11-10 18:11:14,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 130 transitions, 401 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:11:14,535 INFO L231 Difference]: Finished difference. Result has 132 places, 130 transitions, 317 flow [2024-11-10 18:11:14,535 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=317, PETRI_PLACES=132, PETRI_TRANSITIONS=130} [2024-11-10 18:11:14,536 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, 0 predicate places. [2024-11-10 18:11:14,536 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 130 transitions, 317 flow [2024-11-10 18:11:14,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:14,537 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:14,537 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:11:14,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2024-11-10 18:11:14,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 18:11:14,738 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-10 18:11:14,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:14,739 INFO L85 PathProgramCache]: Analyzing trace with hash 631850598, now seen corresponding path program 1 times [2024-11-10 18:11:14,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:11:14,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1180820239] [2024-11-10 18:11:14,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:14,740 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 18:11:14,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:11:14,748 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-10 18:11:14,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-11-10 18:11:14,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:14,925 INFO L255 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 18:11:14,926 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:11:14,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-10 18:11:14,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:11:14,973 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:11:14,974 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:11:14,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1180820239] [2024-11-10 18:11:14,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1180820239] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:11:14,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:11:14,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 18:11:14,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362339519] [2024-11-10 18:11:14,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:11:14,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:11:14,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:11:14,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:11:14,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:11:15,246 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 153 [2024-11-10 18:11:15,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 130 transitions, 317 flow. Second operand has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:15,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:15,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 153 [2024-11-10 18:11:15,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:15,513 INFO L124 PetriNetUnfolderBase]: 122/532 cut-off events. [2024-11-10 18:11:15,513 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-11-10 18:11:15,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 852 conditions, 532 events. 122/532 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2876 event pairs, 100 based on Foata normal form. 2/452 useless extension candidates. Maximal degree in co-relation 810. Up to 261 conditions per place. [2024-11-10 18:11:15,517 INFO L140 encePairwiseOnDemand]: 148/153 looper letters, 45 selfloop transitions, 4 changer transitions 0/128 dead transitions. [2024-11-10 18:11:15,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 128 transitions, 411 flow [2024-11-10 18:11:15,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:11:15,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 18:11:15,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 391 transitions. [2024-11-10 18:11:15,519 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2024-11-10 18:11:15,519 INFO L175 Difference]: Start difference. First operand has 132 places, 130 transitions, 317 flow. Second operand 4 states and 391 transitions. [2024-11-10 18:11:15,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 128 transitions, 411 flow [2024-11-10 18:11:15,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 128 transitions, 397 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 18:11:15,523 INFO L231 Difference]: Finished difference. Result has 129 places, 128 transitions, 307 flow [2024-11-10 18:11:15,523 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=307, PETRI_PLACES=129, PETRI_TRANSITIONS=128} [2024-11-10 18:11:15,524 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, -3 predicate places. [2024-11-10 18:11:15,524 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 128 transitions, 307 flow [2024-11-10 18:11:15,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:15,525 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:15,525 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:11:15,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2024-11-10 18:11:15,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 18:11:15,726 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-10 18:11:15,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:15,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1620138678, now seen corresponding path program 1 times [2024-11-10 18:11:15,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:11:15,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [419879960] [2024-11-10 18:11:15,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:15,727 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 18:11:15,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:11:15,729 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-10 18:11:15,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-11-10 18:11:15,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:15,879 INFO L255 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-10 18:11:15,880 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:11:15,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:11:15,891 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:11:15,891 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:11:15,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [419879960] [2024-11-10 18:11:15,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [419879960] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:11:15,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:11:15,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 18:11:15,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362924890] [2024-11-10 18:11:15,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:11:15,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:11:15,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:11:15,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:11:15,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:11:15,895 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 153 [2024-11-10 18:11:15,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 128 transitions, 307 flow. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:15,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:15,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 153 [2024-11-10 18:11:15,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:16,182 INFO L124 PetriNetUnfolderBase]: 121/550 cut-off events. [2024-11-10 18:11:16,182 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-10 18:11:16,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 872 conditions, 550 events. 121/550 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2871 event pairs, 100 based on Foata normal form. 2/462 useless extension candidates. Maximal degree in co-relation 839. Up to 260 conditions per place. [2024-11-10 18:11:16,187 INFO L140 encePairwiseOnDemand]: 150/153 looper letters, 49 selfloop transitions, 3 changer transitions 0/132 dead transitions. [2024-11-10 18:11:16,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 132 transitions, 425 flow [2024-11-10 18:11:16,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:11:16,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:11:16,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 320 transitions. [2024-11-10 18:11:16,189 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6971677559912854 [2024-11-10 18:11:16,189 INFO L175 Difference]: Start difference. First operand has 129 places, 128 transitions, 307 flow. Second operand 3 states and 320 transitions. [2024-11-10 18:11:16,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 132 transitions, 425 flow [2024-11-10 18:11:16,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 132 transitions, 409 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-10 18:11:16,193 INFO L231 Difference]: Finished difference. Result has 129 places, 128 transitions, 308 flow [2024-11-10 18:11:16,194 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=308, PETRI_PLACES=129, PETRI_TRANSITIONS=128} [2024-11-10 18:11:16,194 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, -3 predicate places. [2024-11-10 18:11:16,195 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 128 transitions, 308 flow [2024-11-10 18:11:16,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:16,195 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:16,195 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:11:16,202 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-11-10 18:11:16,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 18:11:16,397 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-10 18:11:16,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:16,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1618058180, now seen corresponding path program 1 times [2024-11-10 18:11:16,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:11:16,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [363114893] [2024-11-10 18:11:16,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:16,398 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 18:11:16,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:11:16,399 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-10 18:11:16,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-11-10 18:11:16,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:16,920 INFO L255 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-10 18:11:16,922 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:11:16,992 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-10 18:11:16,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-11-10 18:11:17,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:11:17,054 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:11:17,054 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:11:17,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [363114893] [2024-11-10 18:11:17,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [363114893] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:11:17,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:11:17,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:11:17,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26937833] [2024-11-10 18:11:17,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:11:17,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:11:17,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:11:17,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:11:17,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:11:17,284 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 153 [2024-11-10 18:11:17,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 128 transitions, 308 flow. Second operand has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:17,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:17,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 153 [2024-11-10 18:11:17,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:17,639 INFO L124 PetriNetUnfolderBase]: 120/511 cut-off events. [2024-11-10 18:11:17,640 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-11-10 18:11:17,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 835 conditions, 511 events. 120/511 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2632 event pairs, 61 based on Foata normal form. 2/448 useless extension candidates. Maximal degree in co-relation 800. Up to 173 conditions per place. [2024-11-10 18:11:17,644 INFO L140 encePairwiseOnDemand]: 147/153 looper letters, 65 selfloop transitions, 5 changer transitions 0/148 dead transitions. [2024-11-10 18:11:17,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 148 transitions, 488 flow [2024-11-10 18:11:17,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:11:17,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 18:11:17,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 412 transitions. [2024-11-10 18:11:17,647 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.673202614379085 [2024-11-10 18:11:17,647 INFO L175 Difference]: Start difference. First operand has 129 places, 128 transitions, 308 flow. Second operand 4 states and 412 transitions. [2024-11-10 18:11:17,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 148 transitions, 488 flow [2024-11-10 18:11:17,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 148 transitions, 485 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:11:17,651 INFO L231 Difference]: Finished difference. Result has 129 places, 126 transitions, 311 flow [2024-11-10 18:11:17,652 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=311, PETRI_PLACES=129, PETRI_TRANSITIONS=126} [2024-11-10 18:11:17,652 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, -3 predicate places. [2024-11-10 18:11:17,653 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 126 transitions, 311 flow [2024-11-10 18:11:17,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:17,654 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:17,654 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:11:17,662 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-11-10 18:11:17,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 18:11:17,855 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-10 18:11:17,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:17,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1618058181, now seen corresponding path program 1 times [2024-11-10 18:11:17,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:11:17,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1363290739] [2024-11-10 18:11:17,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:17,857 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 18:11:17,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:11:17,858 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-10 18:11:17,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-11-10 18:11:18,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:18,441 INFO L255 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-10 18:11:18,443 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:11:18,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 18:11:18,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-10 18:11:18,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:11:18,616 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:11:18,616 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:11:18,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1363290739] [2024-11-10 18:11:18,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1363290739] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:11:18,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:11:18,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 18:11:18,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168305052] [2024-11-10 18:11:18,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:11:18,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 18:11:18,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:11:18,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 18:11:18,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 18:11:19,041 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 153 [2024-11-10 18:11:19,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 126 transitions, 311 flow. Second operand has 5 states, 5 states have (on average 86.4) internal successors, (432), 5 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:19,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:19,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 153 [2024-11-10 18:11:19,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:19,375 INFO L124 PetriNetUnfolderBase]: 123/580 cut-off events. [2024-11-10 18:11:19,376 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2024-11-10 18:11:19,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 953 conditions, 580 events. 123/580 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3141 event pairs, 101 based on Foata normal form. 2/480 useless extension candidates. Maximal degree in co-relation 859. Up to 271 conditions per place. [2024-11-10 18:11:19,380 INFO L140 encePairwiseOnDemand]: 147/153 looper letters, 53 selfloop transitions, 5 changer transitions 0/133 dead transitions. [2024-11-10 18:11:19,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 133 transitions, 453 flow [2024-11-10 18:11:19,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:11:19,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 18:11:19,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 397 transitions. [2024-11-10 18:11:19,383 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6486928104575164 [2024-11-10 18:11:19,383 INFO L175 Difference]: Start difference. First operand has 129 places, 126 transitions, 311 flow. Second operand 4 states and 397 transitions. [2024-11-10 18:11:19,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 133 transitions, 453 flow [2024-11-10 18:11:19,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 133 transitions, 437 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 18:11:19,389 INFO L231 Difference]: Finished difference. Result has 131 places, 130 transitions, 343 flow [2024-11-10 18:11:19,390 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=343, PETRI_PLACES=131, PETRI_TRANSITIONS=130} [2024-11-10 18:11:19,391 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, -1 predicate places. [2024-11-10 18:11:19,392 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 130 transitions, 343 flow [2024-11-10 18:11:19,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.4) internal successors, (432), 5 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:19,393 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:19,394 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:11:19,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-11-10 18:11:19,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 18:11:19,594 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-10 18:11:19,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:19,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1379803161, now seen corresponding path program 1 times [2024-11-10 18:11:19,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:11:19,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [402422945] [2024-11-10 18:11:19,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:19,596 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 18:11:19,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:11:19,597 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-10 18:11:19,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-11-10 18:11:20,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:20,238 INFO L255 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-10 18:11:20,241 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:11:20,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-10 18:11:20,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 15 [2024-11-10 18:11:20,448 INFO L349 Elim1Store]: treesize reduction 17, result has 19.0 percent of original size [2024-11-10 18:11:20,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 16 [2024-11-10 18:11:20,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-10 18:11:20,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-10 18:11:20,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-10 18:11:20,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:11:20,601 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:11:20,602 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:11:20,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [402422945] [2024-11-10 18:11:20,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [402422945] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:11:20,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:11:20,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-10 18:11:20,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983230944] [2024-11-10 18:11:20,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:11:20,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 18:11:20,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:11:20,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 18:11:20,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-10 18:11:21,584 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 153 [2024-11-10 18:11:21,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 130 transitions, 343 flow. Second operand has 10 states, 10 states have (on average 78.0) internal successors, (780), 10 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:21,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:21,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 153 [2024-11-10 18:11:21,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:22,619 INFO L124 PetriNetUnfolderBase]: 121/541 cut-off events. [2024-11-10 18:11:22,620 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-11-10 18:11:22,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 920 conditions, 541 events. 121/541 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2856 event pairs, 61 based on Foata normal form. 0/478 useless extension candidates. Maximal degree in co-relation 825. Up to 185 conditions per place. [2024-11-10 18:11:22,624 INFO L140 encePairwiseOnDemand]: 141/153 looper letters, 73 selfloop transitions, 16 changer transitions 0/161 dead transitions. [2024-11-10 18:11:22,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 161 transitions, 591 flow [2024-11-10 18:11:22,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 18:11:22,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-10 18:11:22,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 929 transitions. [2024-11-10 18:11:22,627 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5519904931669638 [2024-11-10 18:11:22,627 INFO L175 Difference]: Start difference. First operand has 131 places, 130 transitions, 343 flow. Second operand 11 states and 929 transitions. [2024-11-10 18:11:22,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 161 transitions, 591 flow [2024-11-10 18:11:22,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 161 transitions, 589 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:11:22,631 INFO L231 Difference]: Finished difference. Result has 145 places, 136 transitions, 422 flow [2024-11-10 18:11:22,632 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=422, PETRI_PLACES=145, PETRI_TRANSITIONS=136} [2024-11-10 18:11:22,632 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, 13 predicate places. [2024-11-10 18:11:22,633 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 136 transitions, 422 flow [2024-11-10 18:11:22,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 78.0) internal successors, (780), 10 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:22,634 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:22,635 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:11:22,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2024-11-10 18:11:22,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 18:11:22,835 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-10 18:11:22,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:22,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1379803160, now seen corresponding path program 1 times [2024-11-10 18:11:22,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:11:22,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2014564259] [2024-11-10 18:11:22,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:22,837 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 18:11:22,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:11:22,838 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-10 18:11:22,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-11-10 18:11:23,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:23,485 INFO L255 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-10 18:11:23,488 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:11:23,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-10 18:11:23,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-10 18:11:23,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-10 18:11:23,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-10 18:11:23,750 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-10 18:11:23,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-10 18:11:23,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-10 18:11:23,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-10 18:11:23,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-10 18:11:23,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-10 18:11:23,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-10 18:11:23,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-10 18:11:23,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-10 18:11:23,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:11:23,975 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:11:23,975 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:11:23,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2014564259] [2024-11-10 18:11:23,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2014564259] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:11:23,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:11:23,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-10 18:11:23,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687875676] [2024-11-10 18:11:23,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:11:23,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 18:11:23,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:11:23,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 18:11:23,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-10 18:11:25,286 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 153 [2024-11-10 18:11:25,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 136 transitions, 422 flow. Second operand has 10 states, 10 states have (on average 71.0) internal successors, (710), 10 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:25,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:25,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 153 [2024-11-10 18:11:25,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:26,199 INFO L124 PetriNetUnfolderBase]: 123/577 cut-off events. [2024-11-10 18:11:26,199 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2024-11-10 18:11:26,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1031 conditions, 577 events. 123/577 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3112 event pairs, 101 based on Foata normal form. 1/495 useless extension candidates. Maximal degree in co-relation 891. Up to 284 conditions per place. [2024-11-10 18:11:26,204 INFO L140 encePairwiseOnDemand]: 142/153 looper letters, 74 selfloop transitions, 10 changer transitions 0/151 dead transitions. [2024-11-10 18:11:26,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 151 transitions, 643 flow [2024-11-10 18:11:26,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 18:11:26,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 18:11:26,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 779 transitions. [2024-11-10 18:11:26,208 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5091503267973856 [2024-11-10 18:11:26,208 INFO L175 Difference]: Start difference. First operand has 145 places, 136 transitions, 422 flow. Second operand 10 states and 779 transitions. [2024-11-10 18:11:26,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 151 transitions, 643 flow [2024-11-10 18:11:26,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 151 transitions, 623 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-10 18:11:26,213 INFO L231 Difference]: Finished difference. Result has 153 places, 139 transitions, 454 flow [2024-11-10 18:11:26,213 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=454, PETRI_PLACES=153, PETRI_TRANSITIONS=139} [2024-11-10 18:11:26,214 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, 21 predicate places. [2024-11-10 18:11:26,214 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 139 transitions, 454 flow [2024-11-10 18:11:26,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 71.0) internal successors, (710), 10 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:26,215 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:26,215 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:11:26,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2024-11-10 18:11:26,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 18:11:26,420 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-10 18:11:26,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:26,420 INFO L85 PathProgramCache]: Analyzing trace with hash 175775699, now seen corresponding path program 1 times [2024-11-10 18:11:26,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:11:26,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1645847508] [2024-11-10 18:11:26,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:26,421 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 18:11:26,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:11:26,422 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-10 18:11:26,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-11-10 18:11:26,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:26,652 INFO L255 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-10 18:11:26,654 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:11:26,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-10 18:11:26,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:11:26,680 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:11:26,680 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:11:26,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1645847508] [2024-11-10 18:11:26,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1645847508] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:11:26,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:11:26,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 18:11:26,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467167274] [2024-11-10 18:11:26,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:11:26,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:11:26,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:11:26,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:11:26,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:11:26,790 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 153 [2024-11-10 18:11:26,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 139 transitions, 454 flow. Second operand has 4 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:26,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:26,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 153 [2024-11-10 18:11:26,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:27,078 INFO L124 PetriNetUnfolderBase]: 122/567 cut-off events. [2024-11-10 18:11:27,079 INFO L125 PetriNetUnfolderBase]: For 119/119 co-relation queries the response was YES. [2024-11-10 18:11:27,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 990 conditions, 567 events. 122/567 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3049 event pairs, 100 based on Foata normal form. 0/491 useless extension candidates. Maximal degree in co-relation 901. Up to 260 conditions per place. [2024-11-10 18:11:27,083 INFO L140 encePairwiseOnDemand]: 148/153 looper letters, 49 selfloop transitions, 11 changer transitions 0/137 dead transitions. [2024-11-10 18:11:27,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 137 transitions, 570 flow [2024-11-10 18:11:27,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:11:27,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 18:11:27,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 391 transitions. [2024-11-10 18:11:27,085 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2024-11-10 18:11:27,085 INFO L175 Difference]: Start difference. First operand has 153 places, 139 transitions, 454 flow. Second operand 4 states and 391 transitions. [2024-11-10 18:11:27,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 137 transitions, 570 flow [2024-11-10 18:11:27,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 137 transitions, 566 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:11:27,091 INFO L231 Difference]: Finished difference. Result has 152 places, 137 transitions, 468 flow [2024-11-10 18:11:27,091 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=468, PETRI_PLACES=152, PETRI_TRANSITIONS=137} [2024-11-10 18:11:27,092 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, 20 predicate places. [2024-11-10 18:11:27,092 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 137 transitions, 468 flow [2024-11-10 18:11:27,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:27,093 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:27,093 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:11:27,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2024-11-10 18:11:27,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 18:11:27,294 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-10 18:11:27,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:27,294 INFO L85 PathProgramCache]: Analyzing trace with hash 175775700, now seen corresponding path program 1 times [2024-11-10 18:11:27,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:11:27,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [127184719] [2024-11-10 18:11:27,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:27,295 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 18:11:27,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:11:27,297 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-10 18:11:27,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-11-10 18:11:27,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:27,546 INFO L255 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-10 18:11:27,549 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:11:27,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-10 18:11:27,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:11:27,598 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:11:27,599 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:11:27,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [127184719] [2024-11-10 18:11:27,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [127184719] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:11:27,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:11:27,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 18:11:27,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643945741] [2024-11-10 18:11:27,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:11:27,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:11:27,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:11:27,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:11:27,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:11:27,806 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 153 [2024-11-10 18:11:27,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 137 transitions, 468 flow. Second operand has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:27,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:27,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 153 [2024-11-10 18:11:27,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:28,148 INFO L124 PetriNetUnfolderBase]: 122/559 cut-off events. [2024-11-10 18:11:28,148 INFO L125 PetriNetUnfolderBase]: For 174/174 co-relation queries the response was YES. [2024-11-10 18:11:28,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 984 conditions, 559 events. 122/559 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2983 event pairs, 100 based on Foata normal form. 8/491 useless extension candidates. Maximal degree in co-relation 897. Up to 260 conditions per place. [2024-11-10 18:11:28,153 INFO L140 encePairwiseOnDemand]: 148/153 looper letters, 47 selfloop transitions, 11 changer transitions 0/135 dead transitions. [2024-11-10 18:11:28,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 135 transitions, 580 flow [2024-11-10 18:11:28,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:11:28,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 18:11:28,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 397 transitions. [2024-11-10 18:11:28,155 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6486928104575164 [2024-11-10 18:11:28,156 INFO L175 Difference]: Start difference. First operand has 152 places, 137 transitions, 468 flow. Second operand 4 states and 397 transitions. [2024-11-10 18:11:28,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 135 transitions, 580 flow [2024-11-10 18:11:28,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 135 transitions, 558 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 18:11:28,160 INFO L231 Difference]: Finished difference. Result has 150 places, 135 transitions, 464 flow [2024-11-10 18:11:28,160 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=464, PETRI_PLACES=150, PETRI_TRANSITIONS=135} [2024-11-10 18:11:28,162 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, 18 predicate places. [2024-11-10 18:11:28,162 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 135 transitions, 464 flow [2024-11-10 18:11:28,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:28,162 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:28,162 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:11:28,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2024-11-10 18:11:28,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 18:11:28,363 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-10 18:11:28,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:28,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1053521942, now seen corresponding path program 1 times [2024-11-10 18:11:28,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:11:28,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1611139506] [2024-11-10 18:11:28,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:28,365 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 18:11:28,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:11:28,366 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-10 18:11:28,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-11-10 18:11:28,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:28,597 INFO L255 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 18:11:28,599 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:11:28,622 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:11:28,623 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:11:28,664 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:11:28,664 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:11:28,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1611139506] [2024-11-10 18:11:28,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1611139506] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:11:28,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-10 18:11:28,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-11-10 18:11:28,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925102015] [2024-11-10 18:11:28,665 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-10 18:11:28,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 18:11:28,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:11:28,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 18:11:28,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-10 18:11:28,671 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 153 [2024-11-10 18:11:28,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 135 transitions, 464 flow. Second operand has 6 states, 6 states have (on average 93.0) internal successors, (558), 6 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:28,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:28,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 153 [2024-11-10 18:11:28,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:29,104 INFO L124 PetriNetUnfolderBase]: 122/615 cut-off events. [2024-11-10 18:11:29,104 INFO L125 PetriNetUnfolderBase]: For 279/279 co-relation queries the response was YES. [2024-11-10 18:11:29,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1134 conditions, 615 events. 122/615 cut-off events. For 279/279 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3203 event pairs, 100 based on Foata normal form. 6/541 useless extension candidates. Maximal degree in co-relation 1039. Up to 258 conditions per place. [2024-11-10 18:11:29,109 INFO L140 encePairwiseOnDemand]: 149/153 looper letters, 63 selfloop transitions, 11 changer transitions 0/150 dead transitions. [2024-11-10 18:11:29,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 150 transitions, 724 flow [2024-11-10 18:11:29,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 18:11:29,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 18:11:29,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 603 transitions. [2024-11-10 18:11:29,113 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6568627450980392 [2024-11-10 18:11:29,113 INFO L175 Difference]: Start difference. First operand has 150 places, 135 transitions, 464 flow. Second operand 6 states and 603 transitions. [2024-11-10 18:11:29,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 150 transitions, 724 flow [2024-11-10 18:11:29,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 150 transitions, 680 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 18:11:29,119 INFO L231 Difference]: Finished difference. Result has 156 places, 140 transitions, 524 flow [2024-11-10 18:11:29,119 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=524, PETRI_PLACES=156, PETRI_TRANSITIONS=140} [2024-11-10 18:11:29,120 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, 24 predicate places. [2024-11-10 18:11:29,120 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 140 transitions, 524 flow [2024-11-10 18:11:29,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 93.0) internal successors, (558), 6 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:29,121 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:29,121 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:11:29,130 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2024-11-10 18:11:29,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 18:11:29,322 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-10 18:11:29,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:29,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1765052792, now seen corresponding path program 1 times [2024-11-10 18:11:29,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:11:29,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1773741763] [2024-11-10 18:11:29,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:29,323 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 18:11:29,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:11:29,325 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-10 18:11:29,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2024-11-10 18:11:30,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:30,263 INFO L255 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-10 18:11:30,267 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:11:30,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-10 18:11:30,278 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 [2024-11-10 18:11:30,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-10 18:11:30,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-10 18:11:30,584 INFO L349 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2024-11-10 18:11:30,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 30 [2024-11-10 18:11:30,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2024-11-10 18:11:30,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-10 18:11:30,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 27 [2024-11-10 18:11:30,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 27 [2024-11-10 18:11:30,729 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 20 treesize of output 15 [2024-11-10 18:11:30,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 19 [2024-11-10 18:11:30,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-10 18:11:30,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-10 18:11:30,854 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:11:30,855 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:11:30,989 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))) (and (forall ((v_ArrVal_581 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_582 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_581) |c_~#c~0.base|) .cse0) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_582) |c_~#c~0.base|) .cse0)))) (forall ((v_ArrVal_581 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_581) |c_~#c~0.base|) .cse0))) (bvule (bvadd .cse1 (_ bv4 32)) (bvadd .cse1 (_ bv8 32))))))) is different from false [2024-11-10 18:11:31,031 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))) (and (forall ((v_ArrVal_581 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_581) |c_~#c~0.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_581 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_582 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_581) |c_~#c~0.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_582) |c_~#c~0.base|) .cse1)))))) is different from false [2024-11-10 18:11:31,336 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 18:11:31,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 49 [2024-11-10 18:11:31,351 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 18:11:31,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 41 [2024-11-10 18:11:31,372 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 18:11:31,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 77 [2024-11-10 18:11:31,406 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 18:11:31,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 113 [2024-11-10 18:11:31,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-11-10 18:11:31,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 14 [2024-11-10 18:11:32,021 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 18:11:32,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 38 [2024-11-10 18:11:32,041 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 18:11:32,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 55 [2024-11-10 18:11:32,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-10 18:11:35,086 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2024-11-10 18:11:35,087 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:11:35,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1773741763] [2024-11-10 18:11:35,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1773741763] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:11:35,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-10 18:11:35,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2024-11-10 18:11:35,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044696825] [2024-11-10 18:11:35,087 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-10 18:11:35,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-10 18:11:35,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:11:35,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-10 18:11:35,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=204, Unknown=2, NotChecked=58, Total=306 [2024-11-10 18:11:36,093 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 153 [2024-11-10 18:11:36,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 140 transitions, 524 flow. Second operand has 18 states, 18 states have (on average 34.888888888888886) internal successors, (628), 18 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:36,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:36,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 153 [2024-11-10 18:11:36,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:41,768 INFO L124 PetriNetUnfolderBase]: 465/1357 cut-off events. [2024-11-10 18:11:41,768 INFO L125 PetriNetUnfolderBase]: For 230/230 co-relation queries the response was YES. [2024-11-10 18:11:41,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2643 conditions, 1357 events. 465/1357 cut-off events. For 230/230 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 8947 event pairs, 422 based on Foata normal form. 6/931 useless extension candidates. Maximal degree in co-relation 2551. Up to 956 conditions per place. [2024-11-10 18:11:41,780 INFO L140 encePairwiseOnDemand]: 143/153 looper letters, 87 selfloop transitions, 25 changer transitions 0/145 dead transitions. [2024-11-10 18:11:41,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 145 transitions, 762 flow [2024-11-10 18:11:41,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 18:11:41,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-10 18:11:41,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 526 transitions. [2024-11-10 18:11:41,787 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2644544997486174 [2024-11-10 18:11:41,787 INFO L175 Difference]: Start difference. First operand has 156 places, 140 transitions, 524 flow. Second operand 13 states and 526 transitions. [2024-11-10 18:11:41,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 145 transitions, 762 flow [2024-11-10 18:11:41,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 145 transitions, 744 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-11-10 18:11:41,793 INFO L231 Difference]: Finished difference. Result has 169 places, 142 transitions, 570 flow [2024-11-10 18:11:41,794 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=570, PETRI_PLACES=169, PETRI_TRANSITIONS=142} [2024-11-10 18:11:41,794 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, 37 predicate places. [2024-11-10 18:11:41,794 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 142 transitions, 570 flow [2024-11-10 18:11:41,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 34.888888888888886) internal successors, (628), 18 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:41,795 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:41,795 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:11:41,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2024-11-10 18:11:41,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 18:11:41,996 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-10 18:11:41,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:41,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1765052793, now seen corresponding path program 1 times [2024-11-10 18:11:41,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:11:41,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1019214380] [2024-11-10 18:11:41,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:41,998 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 18:11:41,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:11:42,002 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-10 18:11:42,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2024-11-10 18:11:42,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:42,891 INFO L255 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-10 18:11:42,893 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:11:42,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-10 18:11:43,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-10 18:11:43,115 INFO L349 Elim1Store]: treesize reduction 90, result has 30.2 percent of original size [2024-11-10 18:11:43,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 36 treesize of output 52 [2024-11-10 18:11:43,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 29 [2024-11-10 18:11:43,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 29 [2024-11-10 18:11:43,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 21 [2024-11-10 18:11:43,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-10 18:11:43,321 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:11:43,321 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:11:43,370 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_685 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_685) |c_~#c~0.base|) (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|))))))) is different from false [2024-11-10 18:11:43,390 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_685 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_685) |c_~#c~0.base|) (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|))))))) is different from false [2024-11-10 18:11:43,585 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 18:11:43,585 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2024-11-10 18:11:43,608 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 18:11:43,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 55 [2024-11-10 18:11:43,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 14 [2024-11-10 18:11:53,246 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2024-11-10 18:11:53,247 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:11:53,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1019214380] [2024-11-10 18:11:53,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1019214380] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:11:53,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-10 18:11:53,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2024-11-10 18:11:53,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675472651] [2024-11-10 18:11:53,248 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-10 18:11:53,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-10 18:11:53,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:11:53,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-10 18:11:53,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=8, NotChecked=58, Total=306 [2024-11-10 18:11:53,780 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 153 [2024-11-10 18:11:53,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 142 transitions, 570 flow. Second operand has 18 states, 18 states have (on average 44.888888888888886) internal successors, (808), 18 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:53,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:53,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 153 [2024-11-10 18:11:53,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:55,533 INFO L124 PetriNetUnfolderBase]: 329/1093 cut-off events. [2024-11-10 18:11:55,533 INFO L125 PetriNetUnfolderBase]: For 285/285 co-relation queries the response was YES. [2024-11-10 18:11:55,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2151 conditions, 1093 events. 329/1093 cut-off events. For 285/285 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 6907 event pairs, 292 based on Foata normal form. 0/859 useless extension candidates. Maximal degree in co-relation 2049. Up to 680 conditions per place. [2024-11-10 18:11:55,539 INFO L140 encePairwiseOnDemand]: 145/153 looper letters, 78 selfloop transitions, 23 changer transitions 0/144 dead transitions. [2024-11-10 18:11:55,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 144 transitions, 778 flow [2024-11-10 18:11:55,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 18:11:55,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-10 18:11:55,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 559 transitions. [2024-11-10 18:11:55,543 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33214497920380276 [2024-11-10 18:11:55,543 INFO L175 Difference]: Start difference. First operand has 169 places, 142 transitions, 570 flow. Second operand 11 states and 559 transitions. [2024-11-10 18:11:55,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 144 transitions, 778 flow [2024-11-10 18:11:55,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 144 transitions, 723 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-11-10 18:11:55,548 INFO L231 Difference]: Finished difference. Result has 168 places, 141 transitions, 557 flow [2024-11-10 18:11:55,548 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=511, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=557, PETRI_PLACES=168, PETRI_TRANSITIONS=141} [2024-11-10 18:11:55,549 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, 36 predicate places. [2024-11-10 18:11:55,550 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 141 transitions, 557 flow [2024-11-10 18:11:55,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 44.888888888888886) internal successors, (808), 18 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:55,551 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:55,551 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 18:11:55,563 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2024-11-10 18:11:55,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 18:11:55,752 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-10 18:11:55,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:55,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1470267446, now seen corresponding path program 2 times [2024-11-10 18:11:55,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:11:55,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1356895388] [2024-11-10 18:11:55,753 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 18:11:55,753 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 18:11:55,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:11:55,754 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-10 18:11:55,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2024-11-10 18:11:56,548 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 18:11:56,549 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:11:56,573 INFO L255 TraceCheckSpWp]: Trace formula consists of 867 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 18:11:56,575 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:11:56,652 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 3 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:11:56,652 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:11:56,767 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 3 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:11:56,767 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:11:56,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1356895388] [2024-11-10 18:11:56,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1356895388] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:11:56,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-10 18:11:56,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2024-11-10 18:11:56,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028002788] [2024-11-10 18:11:56,768 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-10 18:11:56,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 18:11:56,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:11:56,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 18:11:56,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-11-10 18:11:56,770 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 153 [2024-11-10 18:11:56,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 141 transitions, 557 flow. Second operand has 12 states, 12 states have (on average 94.0) internal successors, (1128), 12 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:56,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:56,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 153 [2024-11-10 18:11:56,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:57,646 INFO L124 PetriNetUnfolderBase]: 122/735 cut-off events. [2024-11-10 18:11:57,646 INFO L125 PetriNetUnfolderBase]: For 827/827 co-relation queries the response was YES. [2024-11-10 18:11:57,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1623 conditions, 735 events. 122/735 cut-off events. For 827/827 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3158 event pairs, 100 based on Foata normal form. 12/673 useless extension candidates. Maximal degree in co-relation 1535. Up to 258 conditions per place. [2024-11-10 18:11:57,649 INFO L140 encePairwiseOnDemand]: 149/153 looper letters, 93 selfloop transitions, 23 changer transitions 0/193 dead transitions. [2024-11-10 18:11:57,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 193 transitions, 1253 flow [2024-11-10 18:11:57,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 18:11:57,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-10 18:11:57,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1176 transitions. [2024-11-10 18:11:57,653 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6405228758169934 [2024-11-10 18:11:57,653 INFO L175 Difference]: Start difference. First operand has 168 places, 141 transitions, 557 flow. Second operand 12 states and 1176 transitions. [2024-11-10 18:11:57,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 193 transitions, 1253 flow [2024-11-10 18:11:57,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 193 transitions, 1103 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-11-10 18:11:57,664 INFO L231 Difference]: Finished difference. Result has 176 places, 154 transitions, 740 flow [2024-11-10 18:11:57,664 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=511, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=740, PETRI_PLACES=176, PETRI_TRANSITIONS=154} [2024-11-10 18:11:57,664 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, 44 predicate places. [2024-11-10 18:11:57,665 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 154 transitions, 740 flow [2024-11-10 18:11:57,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 94.0) internal successors, (1128), 12 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:57,665 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:57,665 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 18:11:57,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2024-11-10 18:11:57,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 18:11:57,866 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-10 18:11:57,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:57,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1638115446, now seen corresponding path program 3 times [2024-11-10 18:11:57,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:11:57,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1653697656] [2024-11-10 18:11:57,867 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 18:11:57,868 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 18:11:57,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:11:57,869 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-10 18:11:57,870 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 (19)] Waiting until timeout for monitored process [2024-11-10 18:12:11,354 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-10 18:12:11,354 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:12:11,426 INFO L255 TraceCheckSpWp]: Trace formula consists of 1677 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-10 18:12:11,430 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:12:11,632 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 3 proven. 470 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:12:11,633 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:12:12,024 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 3 proven. 470 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:12:12,024 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:12:12,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1653697656] [2024-11-10 18:12:12,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1653697656] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:12:12,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-10 18:12:12,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2024-11-10 18:12:12,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227561672] [2024-11-10 18:12:12,025 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-10 18:12:12,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-10 18:12:12,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:12:12,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-10 18:12:12,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2024-11-10 18:12:12,042 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 153 [2024-11-10 18:12:12,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 154 transitions, 740 flow. Second operand has 24 states, 24 states have (on average 94.5) internal successors, (2268), 24 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:12:12,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:12:12,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 153 [2024-11-10 18:12:12,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:12:14,656 INFO L124 PetriNetUnfolderBase]: 122/999 cut-off events. [2024-11-10 18:12:14,656 INFO L125 PetriNetUnfolderBase]: For 3035/3035 co-relation queries the response was YES. [2024-11-10 18:12:14,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2477 conditions, 999 events. 122/999 cut-off events. For 3035/3035 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3185 event pairs, 100 based on Foata normal form. 24/949 useless extension candidates. Maximal degree in co-relation 2385. Up to 258 conditions per place. [2024-11-10 18:12:14,661 INFO L140 encePairwiseOnDemand]: 149/153 looper letters, 153 selfloop transitions, 47 changer transitions 0/277 dead transitions. [2024-11-10 18:12:14,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 277 transitions, 2127 flow [2024-11-10 18:12:14,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-10 18:12:14,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-10 18:12:14,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2322 transitions. [2024-11-10 18:12:14,666 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6323529411764706 [2024-11-10 18:12:14,667 INFO L175 Difference]: Start difference. First operand has 176 places, 154 transitions, 740 flow. Second operand 24 states and 2322 transitions. [2024-11-10 18:12:14,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 277 transitions, 2127 flow [2024-11-10 18:12:14,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 277 transitions, 2115 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 18:12:14,679 INFO L231 Difference]: Finished difference. Result has 209 places, 179 transitions, 1273 flow [2024-11-10 18:12:14,680 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1273, PETRI_PLACES=209, PETRI_TRANSITIONS=179} [2024-11-10 18:12:14,681 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, 77 predicate places. [2024-11-10 18:12:14,681 INFO L471 AbstractCegarLoop]: Abstraction has has 209 places, 179 transitions, 1273 flow [2024-11-10 18:12:14,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 94.5) internal successors, (2268), 24 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:12:14,683 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:12:14,683 INFO L204 CegarLoopForPetriNet]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 18:12:14,727 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2024-11-10 18:12:14,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 18:12:14,884 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-10 18:12:14,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:12:14,884 INFO L85 PathProgramCache]: Analyzing trace with hash 78272758, now seen corresponding path program 4 times [2024-11-10 18:12:14,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:12:14,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1519084043] [2024-11-10 18:12:14,885 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 18:12:14,885 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 18:12:14,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:12:14,887 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-10 18:12:14,888 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