./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 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_91-arrayloop2_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 18:10:55,473 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 18:10:55,525 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 18:10:55,530 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 18:10:55,533 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 18:10:55,563 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 18:10:55,564 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 18:10:55,565 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 18:10:55,565 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 18:10:55,566 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 18:10:55,566 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 18:10:55,566 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 18:10:55,567 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 18:10:55,567 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 18:10:55,568 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 18:10:55,569 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 18:10:55,573 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 18:10:55,574 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 18:10:55,574 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 18:10:55,574 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 18:10:55,575 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 18:10:55,575 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 18:10:55,576 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 18:10:55,576 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 18:10:55,576 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 18:10:55,576 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 18:10:55,577 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 18:10:55,577 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 18:10:55,577 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 18:10:55,578 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 18:10:55,578 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 18:10:55,578 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 18:10:55,578 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 18:10:55,579 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:10:55,584 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 18:10:55,585 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 18:10:55,585 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 18:10:55,586 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 18:10:55,586 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 18:10:55,586 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 18:10:55,586 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 18:10:55,588 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 18:10:55,588 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 [2024-11-10 18:10:55,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 18:10:55,844 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 18:10:55,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 18:10:55,847 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 18:10:55,847 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 18:10:55,848 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2024-11-10 18:10:57,347 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 18:10:57,582 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 18:10:57,583 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2024-11-10 18:10:57,604 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dfeb1e72/2cb72c6e64974b9488c25862d80f4ad1/FLAG99d847ad5 [2024-11-10 18:10:57,619 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dfeb1e72/2cb72c6e64974b9488c25862d80f4ad1 [2024-11-10 18:10:57,621 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 18:10:57,622 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 18:10:57,623 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 18:10:57,623 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 18:10:57,627 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 18:10:57,628 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:10:57" (1/1) ... [2024-11-10 18:10:57,629 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bf22021 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:10:57, skipping insertion in model container [2024-11-10 18:10:57,629 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:10:57" (1/1) ... [2024-11-10 18:10:57,664 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 18:10:58,064 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 18:10:58,066 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 18:10:58,066 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 18:10:58,067 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 18:10:58,097 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:10:58,144 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 18:10:58,144 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5a0127b0 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 18:10:58,145 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 18:10:58,145 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-10 18:10:58,147 INFO L158 Benchmark]: Toolchain (without parser) took 524.36ms. Allocated memory is still 180.4MB. Free memory was 105.7MB in the beginning and 85.9MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-10 18:10:58,148 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 180.4MB. Free memory is still 135.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 18:10:58,148 INFO L158 Benchmark]: CACSL2BoogieTranslator took 522.01ms. Allocated memory is still 180.4MB. Free memory was 105.5MB in the beginning and 85.9MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-10 18:10:58,149 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 180.4MB. Free memory is still 135.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 522.01ms. Allocated memory is still 180.4MB. Free memory was 105.5MB in the beginning and 85.9MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1044]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 18:11:00,805 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 18:11:00,872 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-10 18:11:00,877 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 18:11:00,878 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 18:11:00,904 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 18:11:00,906 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 18:11:00,906 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 18:11:00,907 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 18:11:00,908 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 18:11:00,908 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 18:11:00,908 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 18:11:00,909 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 18:11:00,909 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 18:11:00,909 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 18:11:00,910 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 18:11:00,910 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 18:11:00,910 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 18:11:00,911 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 18:11:00,911 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 18:11:00,911 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 18:11:00,912 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 18:11:00,912 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 18:11:00,912 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 18:11:00,912 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 18:11:00,913 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-10 18:11:00,913 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 18:11:00,913 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-10 18:11:00,913 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 18:11:00,913 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 18:11:00,914 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 18:11:00,914 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 18:11:00,914 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 18:11:00,914 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 18:11:00,915 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 18:11:00,915 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:11:00,915 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 18:11:00,915 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 18:11:00,916 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-10 18:11:00,916 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-10 18:11:00,916 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 18:11:00,917 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 18:11:00,917 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 18:11:00,917 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 18:11:00,917 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 [2024-11-10 18:11:01,274 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 18:11:01,303 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 18:11:01,308 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 18:11:01,311 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 18:11:01,311 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 18:11:01,313 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2024-11-10 18:11:03,189 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 18:11:03,518 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 18:11:03,520 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2024-11-10 18:11:03,552 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c3cf1059/92044a012b674313af4ed4c41c6c89c1/FLAG3231bb81d [2024-11-10 18:11:03,772 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c3cf1059/92044a012b674313af4ed4c41c6c89c1 [2024-11-10 18:11:03,777 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 18:11:03,779 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 18:11:03,781 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 18:11:03,781 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 18:11:03,787 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 18:11:03,788 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:11:03" (1/1) ... [2024-11-10 18:11:03,789 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ea1e5d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:03, skipping insertion in model container [2024-11-10 18:11:03,789 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:11:03" (1/1) ... [2024-11-10 18:11:03,846 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 18:11:04,387 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 18:11:04,390 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 18:11:04,390 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 18:11:04,391 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 18:11:04,440 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:11:04,514 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-10 18:11:04,536 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 18:11:04,589 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 18:11:04,589 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 18:11:04,595 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 18:11:04,596 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 18:11:04,613 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:11:04,650 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 18:11:04,706 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 18:11:04,707 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 18:11:04,709 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 18:11:04,709 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 18:11:04,723 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:11:04,827 INFO L204 MainTranslator]: Completed translation [2024-11-10 18:11:04,828 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:04 WrapperNode [2024-11-10 18:11:04,828 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 18:11:04,829 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 18:11:04,830 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 18:11:04,830 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 18:11:04,837 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:04" (1/1) ... [2024-11-10 18:11:04,866 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:04" (1/1) ... [2024-11-10 18:11:04,906 INFO L138 Inliner]: procedures = 283, calls = 120, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 253 [2024-11-10 18:11:04,908 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 18:11:04,909 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 18:11:04,909 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 18:11:04,909 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 18:11:04,920 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:04" (1/1) ... [2024-11-10 18:11:04,921 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:04" (1/1) ... [2024-11-10 18:11:04,930 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:04" (1/1) ... [2024-11-10 18:11:04,977 INFO L175 MemorySlicer]: Split 96 memory accesses to 4 slices as follows [2, 5, 87, 2]. 91 percent of accesses are in the largest equivalence class. The 77 initializations are split as follows [2, 5, 70, 0]. The 12 writes are split as follows [0, 0, 11, 1]. [2024-11-10 18:11:04,977 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:04" (1/1) ... [2024-11-10 18:11:04,981 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:04" (1/1) ... [2024-11-10 18:11:05,003 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:04" (1/1) ... [2024-11-10 18:11:05,004 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:04" (1/1) ... [2024-11-10 18:11:05,013 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:04" (1/1) ... [2024-11-10 18:11:05,015 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:04" (1/1) ... [2024-11-10 18:11:05,019 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 18:11:05,020 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 18:11:05,020 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 18:11:05,020 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 18:11:05,021 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:04" (1/1) ... [2024-11-10 18:11:05,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:11:05,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:11:05,073 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 18:11:05,080 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 18:11:05,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-10 18:11:05,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-10 18:11:05,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-10 18:11:05,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2024-11-10 18:11:05,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-10 18:11:05,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-10 18:11:05,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-10 18:11:05,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-10 18:11:05,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-10 18:11:05,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 18:11:05,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-10 18:11:05,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-10 18:11:05,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-10 18:11:05,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2024-11-10 18:11:05,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-10 18:11:05,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-10 18:11:05,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-10 18:11:05,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-10 18:11:05,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-10 18:11:05,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-10 18:11:05,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-10 18:11:05,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-11-10 18:11:05,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-11-10 18:11:05,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2024-11-10 18:11:05,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2024-11-10 18:11:05,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2024-11-10 18:11:05,119 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-10 18:11:05,119 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-10 18:11:05,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 18:11:05,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 18:11:05,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-10 18:11:05,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-10 18:11:05,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-10 18:11:05,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-10 18:11:05,120 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-10 18:11:05,120 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-10 18:11:05,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 18:11:05,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 18:11:05,125 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 18:11:05,293 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 18:11:05,296 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 18:11:05,813 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1061: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2024-11-10 18:11:05,814 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1061-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2024-11-10 18:11:05,955 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 18:11:05,955 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 18:11:07,666 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 18:11:07,666 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 18:11:07,666 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:11:07 BoogieIcfgContainer [2024-11-10 18:11:07,666 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 18:11:07,671 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 18:11:07,675 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 18:11:07,678 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 18:11:07,678 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 06:11:03" (1/3) ... [2024-11-10 18:11:07,679 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@216d4a61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:11:07, skipping insertion in model container [2024-11-10 18:11:07,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:04" (2/3) ... [2024-11-10 18:11:07,682 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@216d4a61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:11:07, skipping insertion in model container [2024-11-10 18:11:07,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:11:07" (3/3) ... [2024-11-10 18:11:07,684 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_91-arrayloop2_racefree.i [2024-11-10 18:11:07,710 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 18:11:07,713 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 40 error locations. [2024-11-10 18:11:07,713 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 18:11:07,858 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-10 18:11:07,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 141 transitions, 289 flow [2024-11-10 18:11:08,006 INFO L124 PetriNetUnfolderBase]: 26/159 cut-off events. [2024-11-10 18:11:08,006 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 18:11:08,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 159 events. 26/159 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 566 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 96. Up to 4 conditions per place. [2024-11-10 18:11:08,012 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 141 transitions, 289 flow [2024-11-10 18:11:08,020 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 141 transitions, 289 flow [2024-11-10 18:11:08,034 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:11:08,042 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;@e817d64, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:11:08,043 INFO L334 AbstractCegarLoop]: Starting to check reachability of 56 error locations. [2024-11-10 18:11:08,055 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 18:11:08,055 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-10 18:11:08,055 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:11:08,056 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:08,057 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 18:11:08,057 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2024-11-10 18:11:08,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:08,062 INFO L85 PathProgramCache]: Analyzing trace with hash 21536277, now seen corresponding path program 1 times [2024-11-10 18:11:08,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:11:08,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1997095156] [2024-11-10 18:11:08,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:08,077 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 18:11:08,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:11:08,081 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 18:11:08,084 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 18:11:08,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:08,245 INFO L255 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 18:11:08,250 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:11:08,376 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 18:11:08,376 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:11:08,377 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:11:08,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1997095156] [2024-11-10 18:11:08,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1997095156] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:11:08,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:11:08,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:11:08,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112737279] [2024-11-10 18:11:08,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:11:08,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:11:08,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:11:08,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:11:08,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:11:08,675 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 141 [2024-11-10 18:11:08,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 141 transitions, 289 flow. Second operand has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:08,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:08,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 141 [2024-11-10 18:11:08,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:09,038 INFO L124 PetriNetUnfolderBase]: 120/485 cut-off events. [2024-11-10 18:11:09,039 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 18:11:09,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 750 conditions, 485 events. 120/485 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2708 event pairs, 61 based on Foata normal form. 131/552 useless extension candidates. Maximal degree in co-relation 668. Up to 167 conditions per place. [2024-11-10 18:11:09,045 INFO L140 encePairwiseOnDemand]: 116/141 looper letters, 61 selfloop transitions, 4 changer transitions 0/142 dead transitions. [2024-11-10 18:11:09,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 142 transitions, 421 flow [2024-11-10 18:11:09,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:11:09,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 18:11:09,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 408 transitions. [2024-11-10 18:11:09,063 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.723404255319149 [2024-11-10 18:11:09,065 INFO L175 Difference]: Start difference. First operand has 120 places, 141 transitions, 289 flow. Second operand 4 states and 408 transitions. [2024-11-10 18:11:09,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 142 transitions, 421 flow [2024-11-10 18:11:09,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 142 transitions, 421 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 18:11:09,073 INFO L231 Difference]: Finished difference. Result has 121 places, 120 transitions, 261 flow [2024-11-10 18:11:09,075 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=261, PETRI_PLACES=121, PETRI_TRANSITIONS=120} [2024-11-10 18:11:09,079 INFO L277 CegarLoopForPetriNet]: 120 programPoint places, 1 predicate places. [2024-11-10 18:11:09,080 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 120 transitions, 261 flow [2024-11-10 18:11:09,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:09,080 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:09,080 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 18:11:09,090 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 18:11:09,281 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 18:11:09,282 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2024-11-10 18:11:09,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:09,284 INFO L85 PathProgramCache]: Analyzing trace with hash 21536278, now seen corresponding path program 1 times [2024-11-10 18:11:09,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:11:09,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1845956549] [2024-11-10 18:11:09,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:09,285 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 18:11:09,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:11:09,287 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 18:11:09,329 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 18:11:09,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:09,586 INFO L255 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-10 18:11:09,587 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:11:09,681 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 18:11:09,682 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:11:09,682 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:11:09,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1845956549] [2024-11-10 18:11:09,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1845956549] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:11:09,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:11:09,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:11:09,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240498291] [2024-11-10 18:11:09,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:11:09,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:11:09,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:11:09,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:11:09,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:11:09,992 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 141 [2024-11-10 18:11:09,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 120 transitions, 261 flow. Second operand has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:09,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:09,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 141 [2024-11-10 18:11:09,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:10,351 INFO L124 PetriNetUnfolderBase]: 122/528 cut-off events. [2024-11-10 18:11:10,351 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-11-10 18:11:10,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 851 conditions, 528 events. 122/528 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2867 event pairs, 100 based on Foata normal form. 3/449 useless extension candidates. Maximal degree in co-relation 743. Up to 261 conditions per place. [2024-11-10 18:11:10,359 INFO L140 encePairwiseOnDemand]: 133/141 looper letters, 44 selfloop transitions, 5 changer transitions 0/124 dead transitions. [2024-11-10 18:11:10,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 124 transitions, 373 flow [2024-11-10 18:11:10,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:11:10,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 18:11:10,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 360 transitions. [2024-11-10 18:11:10,363 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6382978723404256 [2024-11-10 18:11:10,363 INFO L175 Difference]: Start difference. First operand has 121 places, 120 transitions, 261 flow. Second operand 4 states and 360 transitions. [2024-11-10 18:11:10,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 124 transitions, 373 flow [2024-11-10 18:11:10,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 124 transitions, 361 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 18:11:10,370 INFO L231 Difference]: Finished difference. Result has 123 places, 124 transitions, 294 flow [2024-11-10 18:11:10,370 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=294, PETRI_PLACES=123, PETRI_TRANSITIONS=124} [2024-11-10 18:11:10,371 INFO L277 CegarLoopForPetriNet]: 120 programPoint places, 3 predicate places. [2024-11-10 18:11:10,371 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 124 transitions, 294 flow [2024-11-10 18:11:10,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:10,372 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:10,372 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:11:10,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-10 18:11:10,573 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 18:11:10,573 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2024-11-10 18:11:10,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:10,574 INFO L85 PathProgramCache]: Analyzing trace with hash -769547062, now seen corresponding path program 1 times [2024-11-10 18:11:10,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:11:10,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1438223964] [2024-11-10 18:11:10,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:10,575 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 18:11:10,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:11:10,581 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-10 18:11:10,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-10 18:11:10,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:10,833 INFO L255 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 18:11:10,834 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:11:10,890 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 18:11:10,895 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 18:11:10,896 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:11:10,896 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:11:10,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1438223964] [2024-11-10 18:11:10,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1438223964] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:11:10,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:11:10,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:11:10,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798754317] [2024-11-10 18:11:10,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:11:10,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:11:10,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:11:10,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:11:10,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:11:10,995 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 141 [2024-11-10 18:11:10,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 124 transitions, 294 flow. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:10,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:10,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 141 [2024-11-10 18:11:10,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:11,252 INFO L124 PetriNetUnfolderBase]: 122/527 cut-off events. [2024-11-10 18:11:11,253 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-10 18:11:11,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 836 conditions, 527 events. 122/527 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2861 event pairs, 100 based on Foata normal form. 0/445 useless extension candidates. Maximal degree in co-relation 800. Up to 256 conditions per place. [2024-11-10 18:11:11,257 INFO L140 encePairwiseOnDemand]: 138/141 looper letters, 41 selfloop transitions, 3 changer transitions 0/123 dead transitions. [2024-11-10 18:11:11,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 123 transitions, 380 flow [2024-11-10 18:11:11,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:11:11,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:11:11,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 284 transitions. [2024-11-10 18:11:11,261 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6713947990543735 [2024-11-10 18:11:11,261 INFO L175 Difference]: Start difference. First operand has 123 places, 124 transitions, 294 flow. Second operand 3 states and 284 transitions. [2024-11-10 18:11:11,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 123 transitions, 380 flow [2024-11-10 18:11:11,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 123 transitions, 377 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:11:11,265 INFO L231 Difference]: Finished difference. Result has 123 places, 123 transitions, 295 flow [2024-11-10 18:11:11,266 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=295, PETRI_PLACES=123, PETRI_TRANSITIONS=123} [2024-11-10 18:11:11,267 INFO L277 CegarLoopForPetriNet]: 120 programPoint places, 3 predicate places. [2024-11-10 18:11:11,267 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 123 transitions, 295 flow [2024-11-10 18:11:11,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:11,267 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:11,268 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:11:11,274 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-11-10 18:11:11,471 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 18:11:11,472 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2024-11-10 18:11:11,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:11,473 INFO L85 PathProgramCache]: Analyzing trace with hash -769547061, now seen corresponding path program 1 times [2024-11-10 18:11:11,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:11:11,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [102730553] [2024-11-10 18:11:11,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:11,475 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 18:11:11,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:11:11,481 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 18:11:11,484 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 18:11:11,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:11,662 INFO L255 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 18:11:11,665 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:11:11,678 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 18:11:11,688 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 18:11:11,689 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:11:11,689 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:11:11,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [102730553] [2024-11-10 18:11:11,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [102730553] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:11:11,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:11:11,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:11:11,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632716861] [2024-11-10 18:11:11,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:11:11,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:11:11,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:11:11,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:11:11,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:11:11,837 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 141 [2024-11-10 18:11:11,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 123 transitions, 295 flow. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:11,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:11,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 141 [2024-11-10 18:11:11,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:12,065 INFO L124 PetriNetUnfolderBase]: 122/526 cut-off events. [2024-11-10 18:11:12,065 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-11-10 18:11:12,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 836 conditions, 526 events. 122/526 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2858 event pairs, 100 based on Foata normal form. 0/444 useless extension candidates. Maximal degree in co-relation 799. Up to 256 conditions per place. [2024-11-10 18:11:12,068 INFO L140 encePairwiseOnDemand]: 138/141 looper letters, 41 selfloop transitions, 3 changer transitions 0/122 dead transitions. [2024-11-10 18:11:12,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 122 transitions, 381 flow [2024-11-10 18:11:12,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:11:12,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:11:12,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 284 transitions. [2024-11-10 18:11:12,070 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6713947990543735 [2024-11-10 18:11:12,070 INFO L175 Difference]: Start difference. First operand has 123 places, 123 transitions, 295 flow. Second operand 3 states and 284 transitions. [2024-11-10 18:11:12,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 122 transitions, 381 flow [2024-11-10 18:11:12,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 122 transitions, 375 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:11:12,073 INFO L231 Difference]: Finished difference. Result has 122 places, 122 transitions, 293 flow [2024-11-10 18:11:12,073 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=293, PETRI_PLACES=122, PETRI_TRANSITIONS=122} [2024-11-10 18:11:12,074 INFO L277 CegarLoopForPetriNet]: 120 programPoint places, 2 predicate places. [2024-11-10 18:11:12,074 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 122 transitions, 293 flow [2024-11-10 18:11:12,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:12,075 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:12,075 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:11:12,085 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 18:11:12,275 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 18:11:12,276 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2024-11-10 18:11:12,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:12,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1913845560, now seen corresponding path program 1 times [2024-11-10 18:11:12,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:11:12,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1360724196] [2024-11-10 18:11:12,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:12,278 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 18:11:12,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:11:12,280 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 18:11:12,281 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 18:11:12,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:12,422 INFO L255 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 18:11:12,424 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:11:12,429 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 18:11:12,440 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 18:11:12,441 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:11:12,441 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:11:12,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1360724196] [2024-11-10 18:11:12,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1360724196] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:11:12,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:11:12,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 18:11:12,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810844044] [2024-11-10 18:11:12,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:11:12,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:11:12,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:11:12,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:11:12,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:11:12,540 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 141 [2024-11-10 18:11:12,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 122 transitions, 293 flow. Second operand has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:12,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:12,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 141 [2024-11-10 18:11:12,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:12,831 INFO L124 PetriNetUnfolderBase]: 122/524 cut-off events. [2024-11-10 18:11:12,831 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-10 18:11:12,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 837 conditions, 524 events. 122/524 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2853 event pairs, 100 based on Foata normal form. 1/446 useless extension candidates. Maximal degree in co-relation 799. Up to 256 conditions per place. [2024-11-10 18:11:12,833 INFO L140 encePairwiseOnDemand]: 134/141 looper letters, 39 selfloop transitions, 7 changer transitions 0/120 dead transitions. [2024-11-10 18:11:12,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 120 transitions, 381 flow [2024-11-10 18:11:12,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 18:11:12,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 18:11:12,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 419 transitions. [2024-11-10 18:11:12,835 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5943262411347517 [2024-11-10 18:11:12,835 INFO L175 Difference]: Start difference. First operand has 122 places, 122 transitions, 293 flow. Second operand 5 states and 419 transitions. [2024-11-10 18:11:12,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 120 transitions, 381 flow [2024-11-10 18:11:12,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 120 transitions, 375 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:11:12,837 INFO L231 Difference]: Finished difference. Result has 122 places, 120 transitions, 297 flow [2024-11-10 18:11:12,837 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=297, PETRI_PLACES=122, PETRI_TRANSITIONS=120} [2024-11-10 18:11:12,838 INFO L277 CegarLoopForPetriNet]: 120 programPoint places, 2 predicate places. [2024-11-10 18:11:12,838 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 120 transitions, 297 flow [2024-11-10 18:11:12,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:12,838 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:12,839 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:11:12,845 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 18:11:13,039 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 18:11:13,040 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2024-11-10 18:11:13,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:13,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1913845561, now seen corresponding path program 1 times [2024-11-10 18:11:13,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:11:13,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [699318587] [2024-11-10 18:11:13,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:13,042 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 18:11:13,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:11:13,044 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 18:11:13,045 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 18:11:13,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:13,166 INFO L255 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 18:11:13,168 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:11:13,174 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 18:11:13,200 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 18:11:13,201 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:11:13,201 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:11:13,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [699318587] [2024-11-10 18:11:13,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [699318587] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:11:13,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:11:13,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 18:11:13,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342684124] [2024-11-10 18:11:13,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:11:13,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:11:13,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:11:13,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:11:13,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:11:13,427 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 141 [2024-11-10 18:11:13,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 120 transitions, 297 flow. Second operand has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:13,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:13,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 141 [2024-11-10 18:11:13,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:13,672 INFO L124 PetriNetUnfolderBase]: 122/522 cut-off events. [2024-11-10 18:11:13,672 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-11-10 18:11:13,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 839 conditions, 522 events. 122/522 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2844 event pairs, 100 based on Foata normal form. 2/445 useless extension candidates. Maximal degree in co-relation 797. Up to 258 conditions per place. [2024-11-10 18:11:13,675 INFO L140 encePairwiseOnDemand]: 136/141 looper letters, 42 selfloop transitions, 4 changer transitions 0/118 dead transitions. [2024-11-10 18:11:13,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 118 transitions, 385 flow [2024-11-10 18:11:13,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:11:13,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 18:11:13,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 352 transitions. [2024-11-10 18:11:13,676 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.624113475177305 [2024-11-10 18:11:13,676 INFO L175 Difference]: Start difference. First operand has 122 places, 120 transitions, 297 flow. Second operand 4 states and 352 transitions. [2024-11-10 18:11:13,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 118 transitions, 385 flow [2024-11-10 18:11:13,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 118 transitions, 371 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 18:11:13,679 INFO L231 Difference]: Finished difference. Result has 119 places, 118 transitions, 287 flow [2024-11-10 18:11:13,679 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=287, PETRI_PLACES=119, PETRI_TRANSITIONS=118} [2024-11-10 18:11:13,680 INFO L277 CegarLoopForPetriNet]: 120 programPoint places, -1 predicate places. [2024-11-10 18:11:13,680 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 118 transitions, 287 flow [2024-11-10 18:11:13,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:13,680 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:13,680 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:11:13,691 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 18:11:13,884 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 18:11:13,885 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2024-11-10 18:11:13,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:13,886 INFO L85 PathProgramCache]: Analyzing trace with hash 961133716, now seen corresponding path program 1 times [2024-11-10 18:11:13,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:11:13,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [686883357] [2024-11-10 18:11:13,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:13,887 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 18:11:13,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:11:13,890 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 18:11:13,891 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 18:11:13,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:13,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-10 18:11:13,990 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:11:13,997 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 18:11:13,997 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:11:13,997 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:11:13,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [686883357] [2024-11-10 18:11:13,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [686883357] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:11:13,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:11:13,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 18:11:13,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204439867] [2024-11-10 18:11:13,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:11:13,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:11:13,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:11:13,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:11:13,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:11:13,999 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 141 [2024-11-10 18:11:13,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 118 transitions, 287 flow. Second operand has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:14,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:14,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 141 [2024-11-10 18:11:14,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:14,210 INFO L124 PetriNetUnfolderBase]: 121/540 cut-off events. [2024-11-10 18:11:14,210 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-10 18:11:14,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 859 conditions, 540 events. 121/540 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2864 event pairs, 100 based on Foata normal form. 2/455 useless extension candidates. Maximal degree in co-relation 826. Up to 257 conditions per place. [2024-11-10 18:11:14,213 INFO L140 encePairwiseOnDemand]: 138/141 looper letters, 46 selfloop transitions, 3 changer transitions 0/122 dead transitions. [2024-11-10 18:11:14,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 122 transitions, 399 flow [2024-11-10 18:11:14,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:11:14,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:11:14,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 290 transitions. [2024-11-10 18:11:14,214 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6855791962174941 [2024-11-10 18:11:14,214 INFO L175 Difference]: Start difference. First operand has 119 places, 118 transitions, 287 flow. Second operand 3 states and 290 transitions. [2024-11-10 18:11:14,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 122 transitions, 399 flow [2024-11-10 18:11:14,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 122 transitions, 383 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-10 18:11:14,217 INFO L231 Difference]: Finished difference. Result has 119 places, 118 transitions, 288 flow [2024-11-10 18:11:14,217 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=288, PETRI_PLACES=119, PETRI_TRANSITIONS=118} [2024-11-10 18:11:14,218 INFO L277 CegarLoopForPetriNet]: 120 programPoint places, -1 predicate places. [2024-11-10 18:11:14,218 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 118 transitions, 288 flow [2024-11-10 18:11:14,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:14,218 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:14,218 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:11:14,224 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 (8)] Forceful destruction successful, exit code 0 [2024-11-10 18:11:14,419 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 18:11:14,419 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2024-11-10 18:11:14,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:14,419 INFO L85 PathProgramCache]: Analyzing trace with hash 959600410, now seen corresponding path program 1 times [2024-11-10 18:11:14,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:11:14,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1535804000] [2024-11-10 18:11:14,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:14,420 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 18:11:14,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:11:14,424 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 18:11:14,425 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 18:11:14,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:14,895 INFO L255 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 18:11:14,897 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:11:14,961 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-10 18:11:14,962 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 18:11:15,038 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 18:11:15,038 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:11:15,039 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:11:15,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1535804000] [2024-11-10 18:11:15,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1535804000] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:11:15,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:11:15,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:11:15,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856554306] [2024-11-10 18:11:15,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:11:15,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:11:15,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:11:15,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:11:15,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:11:15,219 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 141 [2024-11-10 18:11:15,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 118 transitions, 288 flow. Second operand has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:15,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:15,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 141 [2024-11-10 18:11:15,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:15,449 INFO L124 PetriNetUnfolderBase]: 120/501 cut-off events. [2024-11-10 18:11:15,449 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-11-10 18:11:15,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 822 conditions, 501 events. 120/501 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2599 event pairs, 61 based on Foata normal form. 2/441 useless extension candidates. Maximal degree in co-relation 787. Up to 170 conditions per place. [2024-11-10 18:11:15,452 INFO L140 encePairwiseOnDemand]: 135/141 looper letters, 62 selfloop transitions, 5 changer transitions 0/138 dead transitions. [2024-11-10 18:11:15,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 138 transitions, 462 flow [2024-11-10 18:11:15,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:11:15,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 18:11:15,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 381 transitions. [2024-11-10 18:11:15,453 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.675531914893617 [2024-11-10 18:11:15,454 INFO L175 Difference]: Start difference. First operand has 119 places, 118 transitions, 288 flow. Second operand 4 states and 381 transitions. [2024-11-10 18:11:15,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 138 transitions, 462 flow [2024-11-10 18:11:15,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 138 transitions, 459 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:11:15,456 INFO L231 Difference]: Finished difference. Result has 119 places, 116 transitions, 291 flow [2024-11-10 18:11:15,456 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=291, PETRI_PLACES=119, PETRI_TRANSITIONS=116} [2024-11-10 18:11:15,457 INFO L277 CegarLoopForPetriNet]: 120 programPoint places, -1 predicate places. [2024-11-10 18:11:15,457 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 116 transitions, 291 flow [2024-11-10 18:11:15,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:15,457 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:15,458 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:11:15,469 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 18:11:15,658 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 18:11:15,659 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2024-11-10 18:11:15,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:15,660 INFO L85 PathProgramCache]: Analyzing trace with hash 959600411, now seen corresponding path program 1 times [2024-11-10 18:11:15,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:11:15,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [270832248] [2024-11-10 18:11:15,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:15,661 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 18:11:15,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:11:15,664 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 18:11:15,665 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 18:11:16,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:16,151 INFO L255 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-10 18:11:16,153 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:11:16,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 18:11:16,282 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 18:11:16,380 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 18:11:16,380 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:11:16,380 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:11:16,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [270832248] [2024-11-10 18:11:16,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [270832248] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:11:16,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:11:16,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 18:11:16,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552827120] [2024-11-10 18:11:16,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:11:16,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 18:11:16,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:11:16,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 18:11:16,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 18:11:16,663 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 141 [2024-11-10 18:11:16,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 116 transitions, 291 flow. Second operand has 5 states, 5 states have (on average 79.4) internal successors, (397), 5 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:16,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:16,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 141 [2024-11-10 18:11:16,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:16,956 INFO L124 PetriNetUnfolderBase]: 123/570 cut-off events. [2024-11-10 18:11:16,956 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2024-11-10 18:11:16,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 940 conditions, 570 events. 123/570 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3133 event pairs, 101 based on Foata normal form. 2/473 useless extension candidates. Maximal degree in co-relation 846. Up to 268 conditions per place. [2024-11-10 18:11:16,959 INFO L140 encePairwiseOnDemand]: 135/141 looper letters, 50 selfloop transitions, 5 changer transitions 0/123 dead transitions. [2024-11-10 18:11:16,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 123 transitions, 427 flow [2024-11-10 18:11:16,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:11:16,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 18:11:16,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 366 transitions. [2024-11-10 18:11:16,961 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.648936170212766 [2024-11-10 18:11:16,961 INFO L175 Difference]: Start difference. First operand has 119 places, 116 transitions, 291 flow. Second operand 4 states and 366 transitions. [2024-11-10 18:11:16,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 123 transitions, 427 flow [2024-11-10 18:11:16,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 123 transitions, 411 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 18:11:16,965 INFO L231 Difference]: Finished difference. Result has 121 places, 120 transitions, 323 flow [2024-11-10 18:11:16,965 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=323, PETRI_PLACES=121, PETRI_TRANSITIONS=120} [2024-11-10 18:11:16,965 INFO L277 CegarLoopForPetriNet]: 120 programPoint places, 1 predicate places. [2024-11-10 18:11:16,966 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 120 transitions, 323 flow [2024-11-10 18:11:16,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.4) internal successors, (397), 5 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:16,966 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:16,967 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:11:16,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2024-11-10 18:11:17,170 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 18:11:17,171 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2024-11-10 18:11:17,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:17,172 INFO L85 PathProgramCache]: Analyzing trace with hash -317157652, now seen corresponding path program 1 times [2024-11-10 18:11:17,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:11:17,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1383696523] [2024-11-10 18:11:17,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:17,173 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 18:11:17,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:11:17,176 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 18:11:17,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-11-10 18:11:17,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:17,799 INFO L255 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-10 18:11:17,802 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:11:17,898 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 18:11:17,912 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 18:11:18,015 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 18:11:18,038 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 18:11:18,141 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-10 18:11:18,141 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 18:11:18,166 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 18:11:18,242 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 18:11:18,250 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 18:11:18,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-10 18:11:18,310 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 18:11:18,348 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 18:11:18,356 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 18:11:18,414 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 18:11:18,415 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:11:18,415 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:11:18,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1383696523] [2024-11-10 18:11:18,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1383696523] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:11:18,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:11:18,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-10 18:11:18,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470329796] [2024-11-10 18:11:18,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:11:18,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 18:11:18,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:11:18,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 18:11:18,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-10 18:11:19,806 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 141 [2024-11-10 18:11:19,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 120 transitions, 323 flow. Second operand has 10 states, 10 states have (on average 64.0) internal successors, (640), 10 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:19,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:19,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 141 [2024-11-10 18:11:19,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:20,704 INFO L124 PetriNetUnfolderBase]: 123/569 cut-off events. [2024-11-10 18:11:20,705 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-11-10 18:11:20,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 953 conditions, 569 events. 123/569 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3121 event pairs, 101 based on Foata normal form. 0/485 useless extension candidates. Maximal degree in co-relation 858. Up to 281 conditions per place. [2024-11-10 18:11:20,708 INFO L140 encePairwiseOnDemand]: 130/141 looper letters, 66 selfloop transitions, 10 changer transitions 0/136 dead transitions. [2024-11-10 18:11:20,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 136 transitions, 513 flow [2024-11-10 18:11:20,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 18:11:20,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 18:11:20,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 706 transitions. [2024-11-10 18:11:20,713 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.500709219858156 [2024-11-10 18:11:20,714 INFO L175 Difference]: Start difference. First operand has 121 places, 120 transitions, 323 flow. Second operand 10 states and 706 transitions. [2024-11-10 18:11:20,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 136 transitions, 513 flow [2024-11-10 18:11:20,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 136 transitions, 511 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:11:20,717 INFO L231 Difference]: Finished difference. Result has 134 places, 124 transitions, 373 flow [2024-11-10 18:11:20,717 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=373, PETRI_PLACES=134, PETRI_TRANSITIONS=124} [2024-11-10 18:11:20,718 INFO L277 CegarLoopForPetriNet]: 120 programPoint places, 14 predicate places. [2024-11-10 18:11:20,720 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 124 transitions, 373 flow [2024-11-10 18:11:20,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 64.0) internal successors, (640), 10 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:20,721 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:20,721 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:11:20,729 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 18:11:20,925 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 18:11:20,925 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2024-11-10 18:11:20,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:20,926 INFO L85 PathProgramCache]: Analyzing trace with hash -317157653, now seen corresponding path program 1 times [2024-11-10 18:11:20,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:11:20,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2110431894] [2024-11-10 18:11:20,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:20,927 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 18:11:20,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:11:20,929 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 18:11:20,930 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 18:11:21,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:21,765 INFO L255 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-10 18:11:21,768 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:11:21,859 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 18:11:21,912 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 18:11:21,983 INFO L349 Elim1Store]: treesize reduction 17, result has 19.0 percent of original size [2024-11-10 18:11:21,983 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 18:11:22,024 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 18:11:22,071 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 18:11:22,093 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 18:11:22,142 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 18:11:22,142 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:11:22,142 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:11:22,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2110431894] [2024-11-10 18:11:22,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2110431894] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:11:22,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:11:22,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-10 18:11:22,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574042407] [2024-11-10 18:11:22,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:11:22,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 18:11:22,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:11:22,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 18:11:22,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-10 18:11:23,167 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 141 [2024-11-10 18:11:23,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 124 transitions, 373 flow. Second operand has 10 states, 10 states have (on average 71.0) internal successors, (710), 10 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:23,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:23,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 141 [2024-11-10 18:11:23,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:24,062 INFO L124 PetriNetUnfolderBase]: 121/530 cut-off events. [2024-11-10 18:11:24,062 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2024-11-10 18:11:24,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 936 conditions, 530 events. 121/530 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2870 event pairs, 61 based on Foata normal form. 0/470 useless extension candidates. Maximal degree in co-relation 855. Up to 182 conditions per place. [2024-11-10 18:11:24,069 INFO L140 encePairwiseOnDemand]: 129/141 looper letters, 70 selfloop transitions, 19 changer transitions 0/154 dead transitions. [2024-11-10 18:11:24,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 154 transitions, 619 flow [2024-11-10 18:11:24,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 18:11:24,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-10 18:11:24,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 849 transitions. [2024-11-10 18:11:24,076 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5473887814313346 [2024-11-10 18:11:24,077 INFO L175 Difference]: Start difference. First operand has 134 places, 124 transitions, 373 flow. Second operand 11 states and 849 transitions. [2024-11-10 18:11:24,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 154 transitions, 619 flow [2024-11-10 18:11:24,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 154 transitions, 615 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:11:24,084 INFO L231 Difference]: Finished difference. Result has 147 places, 129 transitions, 456 flow [2024-11-10 18:11:24,085 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=456, PETRI_PLACES=147, PETRI_TRANSITIONS=129} [2024-11-10 18:11:24,085 INFO L277 CegarLoopForPetriNet]: 120 programPoint places, 27 predicate places. [2024-11-10 18:11:24,086 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 129 transitions, 456 flow [2024-11-10 18:11:24,086 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 18:11:24,090 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:24,090 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:11:24,102 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2024-11-10 18:11:24,290 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 18:11:24,291 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2024-11-10 18:11:24,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:24,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1241952026, now seen corresponding path program 1 times [2024-11-10 18:11:24,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:11:24,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1788466541] [2024-11-10 18:11:24,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:24,293 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 18:11:24,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:11:24,295 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 18:11:24,296 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 18:11:24,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:24,523 INFO L255 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-10 18:11:24,525 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:11:24,530 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 18:11:24,555 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 18:11:24,556 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:11:24,556 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:11:24,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1788466541] [2024-11-10 18:11:24,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1788466541] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:11:24,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:11:24,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 18:11:24,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008799784] [2024-11-10 18:11:24,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:11:24,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:11:24,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:11:24,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:11:24,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:11:24,757 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 141 [2024-11-10 18:11:24,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 129 transitions, 456 flow. Second operand has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:24,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:24,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 141 [2024-11-10 18:11:24,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:25,062 INFO L124 PetriNetUnfolderBase]: 122/557 cut-off events. [2024-11-10 18:11:25,062 INFO L125 PetriNetUnfolderBase]: For 154/154 co-relation queries the response was YES. [2024-11-10 18:11:25,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1012 conditions, 557 events. 122/557 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3049 event pairs, 100 based on Foata normal form. 0/484 useless extension candidates. Maximal degree in co-relation 920. Up to 257 conditions per place. [2024-11-10 18:11:25,066 INFO L140 encePairwiseOnDemand]: 136/141 looper letters, 46 selfloop transitions, 11 changer transitions 0/127 dead transitions. [2024-11-10 18:11:25,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 127 transitions, 566 flow [2024-11-10 18:11:25,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:11:25,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 18:11:25,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 352 transitions. [2024-11-10 18:11:25,068 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.624113475177305 [2024-11-10 18:11:25,069 INFO L175 Difference]: Start difference. First operand has 147 places, 129 transitions, 456 flow. Second operand 4 states and 352 transitions. [2024-11-10 18:11:25,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 127 transitions, 566 flow [2024-11-10 18:11:25,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 127 transitions, 542 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-10 18:11:25,073 INFO L231 Difference]: Finished difference. Result has 143 places, 127 transitions, 450 flow [2024-11-10 18:11:25,073 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=450, PETRI_PLACES=143, PETRI_TRANSITIONS=127} [2024-11-10 18:11:25,073 INFO L277 CegarLoopForPetriNet]: 120 programPoint places, 23 predicate places. [2024-11-10 18:11:25,074 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 127 transitions, 450 flow [2024-11-10 18:11:25,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:25,074 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:25,074 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:11:25,082 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2024-11-10 18:11:25,275 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 18:11:25,275 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2024-11-10 18:11:25,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:25,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1241952025, now seen corresponding path program 1 times [2024-11-10 18:11:25,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:11:25,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [998335025] [2024-11-10 18:11:25,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:25,276 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 18:11:25,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:11:25,278 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 18:11:25,280 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 18:11:25,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:25,502 INFO L255 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-10 18:11:25,504 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:11:25,509 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 18:11:25,557 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 18:11:25,557 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:11:25,557 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:11:25,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [998335025] [2024-11-10 18:11:25,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [998335025] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:11:25,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:11:25,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 18:11:25,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208258020] [2024-11-10 18:11:25,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:11:25,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:11:25,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:11:25,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:11:25,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:11:25,755 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 141 [2024-11-10 18:11:25,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 127 transitions, 450 flow. Second operand has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:25,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:25,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 141 [2024-11-10 18:11:25,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:26,027 INFO L124 PetriNetUnfolderBase]: 122/549 cut-off events. [2024-11-10 18:11:26,028 INFO L125 PetriNetUnfolderBase]: For 175/175 co-relation queries the response was YES. [2024-11-10 18:11:26,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 973 conditions, 549 events. 122/549 cut-off events. For 175/175 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2997 event pairs, 100 based on Foata normal form. 8/484 useless extension candidates. Maximal degree in co-relation 886. Up to 257 conditions per place. [2024-11-10 18:11:26,031 INFO L140 encePairwiseOnDemand]: 136/141 looper letters, 44 selfloop transitions, 11 changer transitions 0/125 dead transitions. [2024-11-10 18:11:26,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 125 transitions, 556 flow [2024-11-10 18:11:26,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:11:26,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 18:11:26,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 358 transitions. [2024-11-10 18:11:26,033 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6347517730496454 [2024-11-10 18:11:26,033 INFO L175 Difference]: Start difference. First operand has 143 places, 127 transitions, 450 flow. Second operand 4 states and 358 transitions. [2024-11-10 18:11:26,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 125 transitions, 556 flow [2024-11-10 18:11:26,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 125 transitions, 534 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 18:11:26,036 INFO L231 Difference]: Finished difference. Result has 141 places, 125 transitions, 446 flow [2024-11-10 18:11:26,036 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=446, PETRI_PLACES=141, PETRI_TRANSITIONS=125} [2024-11-10 18:11:26,038 INFO L277 CegarLoopForPetriNet]: 120 programPoint places, 21 predicate places. [2024-11-10 18:11:26,038 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 125 transitions, 446 flow [2024-11-10 18:11:26,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:26,039 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:26,039 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 18:11:26,045 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2024-11-10 18:11:26,239 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 18:11:26,240 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2024-11-10 18:11:26,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:26,241 INFO L85 PathProgramCache]: Analyzing trace with hash -484954132, now seen corresponding path program 1 times [2024-11-10 18:11:26,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:11:26,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [189578564] [2024-11-10 18:11:26,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:26,242 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 18:11:26,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:11:26,245 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 18:11:26,247 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 18:11:26,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:26,612 INFO L255 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 18:11:26,618 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:11:26,651 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 18:11:26,652 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:11:26,708 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 18:11:26,709 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:11:26,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [189578564] [2024-11-10 18:11:26,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [189578564] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:11:26,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-10 18:11:26,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-11-10 18:11:26,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592023394] [2024-11-10 18:11:26,709 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-10 18:11:26,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 18:11:26,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:11:26,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 18:11:26,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-10 18:11:26,711 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 141 [2024-11-10 18:11:26,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 125 transitions, 446 flow. Second operand has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:26,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:26,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 141 [2024-11-10 18:11:26,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:27,320 INFO L124 PetriNetUnfolderBase]: 122/605 cut-off events. [2024-11-10 18:11:27,320 INFO L125 PetriNetUnfolderBase]: For 280/280 co-relation queries the response was YES. [2024-11-10 18:11:27,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1123 conditions, 605 events. 122/605 cut-off events. For 280/280 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3161 event pairs, 100 based on Foata normal form. 6/534 useless extension candidates. Maximal degree in co-relation 1026. Up to 255 conditions per place. [2024-11-10 18:11:27,324 INFO L140 encePairwiseOnDemand]: 137/141 looper letters, 60 selfloop transitions, 11 changer transitions 0/140 dead transitions. [2024-11-10 18:11:27,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 140 transitions, 700 flow [2024-11-10 18:11:27,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 18:11:27,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 18:11:27,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 546 transitions. [2024-11-10 18:11:27,327 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6453900709219859 [2024-11-10 18:11:27,327 INFO L175 Difference]: Start difference. First operand has 141 places, 125 transitions, 446 flow. Second operand 6 states and 546 transitions. [2024-11-10 18:11:27,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 140 transitions, 700 flow [2024-11-10 18:11:27,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 140 transitions, 656 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 18:11:27,333 INFO L231 Difference]: Finished difference. Result has 147 places, 130 transitions, 506 flow [2024-11-10 18:11:27,333 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=506, PETRI_PLACES=147, PETRI_TRANSITIONS=130} [2024-11-10 18:11:27,333 INFO L277 CegarLoopForPetriNet]: 120 programPoint places, 27 predicate places. [2024-11-10 18:11:27,334 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 130 transitions, 506 flow [2024-11-10 18:11:27,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:27,335 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:27,335 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:11:27,346 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2024-11-10 18:11:27,539 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 18:11:27,540 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2024-11-10 18:11:27,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:27,540 INFO L85 PathProgramCache]: Analyzing trace with hash 2098759316, now seen corresponding path program 1 times [2024-11-10 18:11:27,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:11:27,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1374578717] [2024-11-10 18:11:27,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:27,541 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 18:11:27,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:11:27,544 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 18:11:27,545 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 18:11:28,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:28,379 INFO L255 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-10 18:11:28,383 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:11:28,400 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 18:11:28,405 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 18:11:28,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-10 18:11:28,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-10 18:11:28,668 INFO L349 Elim1Store]: treesize reduction 25, result has 45.7 percent of original size [2024-11-10 18:11:28,668 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 20 treesize of output 25 [2024-11-10 18:11:28,694 INFO L349 Elim1Store]: treesize reduction 28, result has 34.9 percent of original size [2024-11-10 18:11:28,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 28 [2024-11-10 18:11:28,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2024-11-10 18:11:28,752 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-10 18:11:28,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-10 18:11:28,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2024-11-10 18:11:28,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2024-11-10 18:11:28,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-10 18:11:28,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-10 18:11:28,918 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 18:11:28,918 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:11:29,010 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))) (and (forall ((v_ArrVal_582 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_582) |c_~#c~0.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_582 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_583 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_582) |c_~#c~0.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_583) |c_~#c~0.base|) .cse1)))))) is different from false [2024-11-10 18:11:29,425 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 18:11:29,426 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 18:11:29,444 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 18:11:29,445 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 18:11:29,454 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 18:11:29,519 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 18:11:29,520 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 18:11:29,530 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 18:11:29,530 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 18:11:29,534 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-10 18:11:29,551 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 18:11:29,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 41 [2024-11-10 18:11:29,557 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-10 18:11:29,573 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 18:11:29,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 30 [2024-11-10 18:11:30,789 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-11-10 18:11:30,789 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:11:30,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1374578717] [2024-11-10 18:11:30,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1374578717] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:11:30,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-10 18:11:30,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2024-11-10 18:11:30,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976730414] [2024-11-10 18:11:30,790 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-10 18:11:30,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-10 18:11:30,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:11:30,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-10 18:11:30,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=193, Unknown=9, NotChecked=28, Total=272 [2024-11-10 18:11:31,910 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 141 [2024-11-10 18:11:31,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 130 transitions, 506 flow. Second operand has 17 states, 17 states have (on average 35.23529411764706) internal successors, (599), 17 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:31,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:31,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 141 [2024-11-10 18:11:31,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:34,210 INFO L124 PetriNetUnfolderBase]: 465/1347 cut-off events. [2024-11-10 18:11:34,210 INFO L125 PetriNetUnfolderBase]: For 231/231 co-relation queries the response was YES. [2024-11-10 18:11:34,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2625 conditions, 1347 events. 465/1347 cut-off events. For 231/231 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 8890 event pairs, 422 based on Foata normal form. 6/927 useless extension candidates. Maximal degree in co-relation 2531. Up to 945 conditions per place. [2024-11-10 18:11:34,220 INFO L140 encePairwiseOnDemand]: 131/141 looper letters, 79 selfloop transitions, 23 changer transitions 0/135 dead transitions. [2024-11-10 18:11:34,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 135 transitions, 724 flow [2024-11-10 18:11:34,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 18:11:34,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-10 18:11:34,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 483 transitions. [2024-11-10 18:11:34,228 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2854609929078014 [2024-11-10 18:11:34,228 INFO L175 Difference]: Start difference. First operand has 147 places, 130 transitions, 506 flow. Second operand 12 states and 483 transitions. [2024-11-10 18:11:34,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 135 transitions, 724 flow [2024-11-10 18:11:34,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 135 transitions, 706 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-11-10 18:11:34,233 INFO L231 Difference]: Finished difference. Result has 158 places, 131 transitions, 542 flow [2024-11-10 18:11:34,233 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=542, PETRI_PLACES=158, PETRI_TRANSITIONS=131} [2024-11-10 18:11:34,234 INFO L277 CegarLoopForPetriNet]: 120 programPoint places, 38 predicate places. [2024-11-10 18:11:34,234 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 131 transitions, 542 flow [2024-11-10 18:11:34,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 35.23529411764706) internal successors, (599), 17 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:34,235 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:34,235 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:11:34,256 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2024-11-10 18:11:34,436 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 18:11:34,436 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2024-11-10 18:11:34,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:34,437 INFO L85 PathProgramCache]: Analyzing trace with hash 2098759315, now seen corresponding path program 1 times [2024-11-10 18:11:34,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:11:34,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1315554289] [2024-11-10 18:11:34,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:34,437 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 18:11:34,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:11:34,439 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 18:11:34,441 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 18:11:35,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:35,271 INFO L255 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-10 18:11:35,274 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:11:35,277 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 18:11:35,353 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 18:11:35,414 INFO L349 Elim1Store]: treesize reduction 90, result has 30.2 percent of original size [2024-11-10 18:11:35,415 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 18:11:35,453 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 18:11:35,486 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 18:11:35,504 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 18:11:35,524 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 18:11:35,547 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 18:11:35,548 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:11:35,629 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_686 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_686) |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 18:11:35,642 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_686 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_683 (_ BitVec 1)) (|v_ULTIMATE.start_new_~p~0#1.base_50| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_new_~p~0#1.base_50|))) (= (_ bv0 1) (bvadd (select (store |c_#valid| |v_ULTIMATE.start_new_~p~0#1.base_50| v_ArrVal_683) (select (select (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_new_~p~0#1.base_50| v_ArrVal_686) |c_~#c~0.base|) (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))) (_ bv1 1))))) is different from false [2024-11-10 18:11:35,663 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 18:11:35,664 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 18:11:35,676 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 18:11:35,676 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 18:11:35,682 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 18:11:36,629 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2024-11-10 18:11:36,630 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:11:36,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1315554289] [2024-11-10 18:11:36,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1315554289] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:11:36,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-10 18:11:36,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2024-11-10 18:11:36,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698787175] [2024-11-10 18:11:36,630 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-10 18:11:36,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-10 18:11:36,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:11:36,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-10 18:11:36,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=149, Unknown=4, NotChecked=50, Total=240 [2024-11-10 18:11:37,042 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 141 [2024-11-10 18:11:37,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 131 transitions, 542 flow. Second operand has 16 states, 16 states have (on average 43.125) internal successors, (690), 16 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:37,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:37,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 141 [2024-11-10 18:11:37,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:38,327 INFO L124 PetriNetUnfolderBase]: 329/1083 cut-off events. [2024-11-10 18:11:38,327 INFO L125 PetriNetUnfolderBase]: For 280/280 co-relation queries the response was YES. [2024-11-10 18:11:38,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2119 conditions, 1083 events. 329/1083 cut-off events. For 280/280 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 6876 event pairs, 292 based on Foata normal form. 0/853 useless extension candidates. Maximal degree in co-relation 2017. Up to 672 conditions per place. [2024-11-10 18:11:38,333 INFO L140 encePairwiseOnDemand]: 133/141 looper letters, 72 selfloop transitions, 21 changer transitions 0/134 dead transitions. [2024-11-10 18:11:38,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 134 transitions, 736 flow [2024-11-10 18:11:38,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 18:11:38,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 18:11:38,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 488 transitions. [2024-11-10 18:11:38,335 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34609929078014184 [2024-11-10 18:11:38,335 INFO L175 Difference]: Start difference. First operand has 158 places, 131 transitions, 542 flow. Second operand 10 states and 488 transitions. [2024-11-10 18:11:38,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 134 transitions, 736 flow [2024-11-10 18:11:38,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 134 transitions, 681 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-11-10 18:11:38,339 INFO L231 Difference]: Finished difference. Result has 155 places, 130 transitions, 525 flow [2024-11-10 18:11:38,339 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=525, PETRI_PLACES=155, PETRI_TRANSITIONS=130} [2024-11-10 18:11:38,339 INFO L277 CegarLoopForPetriNet]: 120 programPoint places, 35 predicate places. [2024-11-10 18:11:38,340 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 130 transitions, 525 flow [2024-11-10 18:11:38,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 43.125) internal successors, (690), 16 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:38,340 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:38,340 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 18:11:38,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2024-11-10 18:11:38,541 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 18:11:38,541 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2024-11-10 18:11:38,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:38,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1622952460, now seen corresponding path program 2 times [2024-11-10 18:11:38,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:11:38,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [724720826] [2024-11-10 18:11:38,543 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 18:11:38,544 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 18:11:38,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:11:38,546 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 18:11:38,547 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 18:11:39,252 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 18:11:39,253 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:11:39,277 INFO L255 TraceCheckSpWp]: Trace formula consists of 867 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 18:11:39,279 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:11:39,342 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 18:11:39,342 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:11:39,444 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 18:11:39,444 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:11:39,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [724720826] [2024-11-10 18:11:39,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [724720826] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:11:39,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-10 18:11:39,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2024-11-10 18:11:39,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885725338] [2024-11-10 18:11:39,444 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-10 18:11:39,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 18:11:39,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:11:39,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 18:11:39,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-11-10 18:11:39,446 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 141 [2024-11-10 18:11:39,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 130 transitions, 525 flow. Second operand has 12 states, 12 states have (on average 85.0) internal successors, (1020), 12 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:39,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:39,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 141 [2024-11-10 18:11:39,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:40,200 INFO L124 PetriNetUnfolderBase]: 122/725 cut-off events. [2024-11-10 18:11:40,201 INFO L125 PetriNetUnfolderBase]: For 809/809 co-relation queries the response was YES. [2024-11-10 18:11:40,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1569 conditions, 725 events. 122/725 cut-off events. For 809/809 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3122 event pairs, 100 based on Foata normal form. 12/666 useless extension candidates. Maximal degree in co-relation 1484. Up to 255 conditions per place. [2024-11-10 18:11:40,204 INFO L140 encePairwiseOnDemand]: 137/141 looper letters, 90 selfloop transitions, 23 changer transitions 0/182 dead transitions. [2024-11-10 18:11:40,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 182 transitions, 1215 flow [2024-11-10 18:11:40,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 18:11:40,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-10 18:11:40,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1065 transitions. [2024-11-10 18:11:40,208 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6294326241134752 [2024-11-10 18:11:40,208 INFO L175 Difference]: Start difference. First operand has 155 places, 130 transitions, 525 flow. Second operand 12 states and 1065 transitions. [2024-11-10 18:11:40,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 182 transitions, 1215 flow [2024-11-10 18:11:40,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 182 transitions, 1069 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-11-10 18:11:40,213 INFO L231 Difference]: Finished difference. Result has 164 places, 143 transitions, 712 flow [2024-11-10 18:11:40,213 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=712, PETRI_PLACES=164, PETRI_TRANSITIONS=143} [2024-11-10 18:11:40,214 INFO L277 CegarLoopForPetriNet]: 120 programPoint places, 44 predicate places. [2024-11-10 18:11:40,214 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 143 transitions, 712 flow [2024-11-10 18:11:40,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 85.0) internal successors, (1020), 12 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:40,215 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:40,215 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 18:11:40,227 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 18:11:40,415 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 18:11:40,415 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2024-11-10 18:11:40,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:40,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1784510460, now seen corresponding path program 3 times [2024-11-10 18:11:40,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:11:40,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1871571978] [2024-11-10 18:11:40,417 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 18:11:40,417 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 18:11:40,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:11:40,421 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 18:11:40,422 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 18:11:58,790 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-10 18:11:58,790 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:11:58,866 INFO L255 TraceCheckSpWp]: Trace formula consists of 1677 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-10 18:11:58,869 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:11:59,037 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 18:11:59,037 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:11:59,375 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 18:11:59,376 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:11:59,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1871571978] [2024-11-10 18:11:59,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1871571978] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:11:59,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-10 18:11:59,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2024-11-10 18:11:59,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233412908] [2024-11-10 18:11:59,376 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-10 18:11:59,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-10 18:11:59,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:11:59,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-10 18:11:59,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2024-11-10 18:11:59,379 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 141 [2024-11-10 18:11:59,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 143 transitions, 712 flow. Second operand has 24 states, 24 states have (on average 85.5) internal successors, (2052), 24 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:11:59,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:59,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 141 [2024-11-10 18:11:59,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:12:01,936 INFO L124 PetriNetUnfolderBase]: 122/989 cut-off events. [2024-11-10 18:12:01,936 INFO L125 PetriNetUnfolderBase]: For 2993/2993 co-relation queries the response was YES. [2024-11-10 18:12:01,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2377 conditions, 989 events. 122/989 cut-off events. For 2993/2993 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3161 event pairs, 100 based on Foata normal form. 24/942 useless extension candidates. Maximal degree in co-relation 2287. Up to 255 conditions per place. [2024-11-10 18:12:01,942 INFO L140 encePairwiseOnDemand]: 137/141 looper letters, 150 selfloop transitions, 47 changer transitions 0/266 dead transitions. [2024-11-10 18:12:01,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 266 transitions, 2093 flow [2024-11-10 18:12:01,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-10 18:12:01,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-10 18:12:01,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2103 transitions. [2024-11-10 18:12:01,946 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6214539007092199 [2024-11-10 18:12:01,946 INFO L175 Difference]: Start difference. First operand has 164 places, 143 transitions, 712 flow. Second operand 24 states and 2103 transitions. [2024-11-10 18:12:01,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 266 transitions, 2093 flow [2024-11-10 18:12:01,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 266 transitions, 2081 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 18:12:01,957 INFO L231 Difference]: Finished difference. Result has 197 places, 168 transitions, 1245 flow [2024-11-10 18:12:01,958 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1245, PETRI_PLACES=197, PETRI_TRANSITIONS=168} [2024-11-10 18:12:01,959 INFO L277 CegarLoopForPetriNet]: 120 programPoint places, 77 predicate places. [2024-11-10 18:12:01,959 INFO L471 AbstractCegarLoop]: Abstraction has has 197 places, 168 transitions, 1245 flow [2024-11-10 18:12:01,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 85.5) internal successors, (2052), 24 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:12:01,961 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:12:01,961 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 18:12:02,022 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 (19)] Forceful destruction successful, exit code 0 [2024-11-10 18:12:02,164 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 18:12:02,165 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2024-11-10 18:12:02,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:12:02,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1290617892, now seen corresponding path program 4 times [2024-11-10 18:12:02,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:12:02,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1707652703] [2024-11-10 18:12:02,167 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 18:12:02,167 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 18:12:02,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:12:02,169 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 18:12:02,171 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