./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3289d67d 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_93-evilcollapse_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 dad265ed8a17f32bb0a174302dfe188f9a15f60b81cc9c28a67851ab05270da2 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 03:30:15,195 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 03:30:15,253 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-17 03:30:15,258 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 03:30:15,260 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 03:30:15,291 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 03:30:15,292 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 03:30:15,293 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 03:30:15,293 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 03:30:15,294 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 03:30:15,295 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 03:30:15,295 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 03:30:15,296 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 03:30:15,297 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 03:30:15,297 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 03:30:15,297 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 03:30:15,298 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 03:30:15,298 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 03:30:15,298 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 03:30:15,298 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 03:30:15,298 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 03:30:15,299 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 03:30:15,299 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 03:30:15,299 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 03:30:15,299 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 03:30:15,300 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 03:30:15,300 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 03:30:15,300 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 03:30:15,300 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 03:30:15,300 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 03:30:15,301 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 03:30:15,301 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 03:30:15,301 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 03:30:15,301 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:30:15,301 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 03:30:15,302 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 03:30:15,302 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 03:30:15,302 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 03:30:15,302 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 03:30:15,302 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 03:30:15,302 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 03:30:15,303 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 03:30:15,303 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dad265ed8a17f32bb0a174302dfe188f9a15f60b81cc9c28a67851ab05270da2 [2024-11-17 03:30:15,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 03:30:15,531 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 03:30:15,534 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 03:30:15,535 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 03:30:15,536 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 03:30:15,537 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2024-11-17 03:30:16,786 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 03:30:16,993 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 03:30:16,993 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2024-11-17 03:30:17,010 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e661193ec/f54879b69d4a468db7c9a1a299efdc9e/FLAG0853c9153 [2024-11-17 03:30:17,021 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e661193ec/f54879b69d4a468db7c9a1a299efdc9e [2024-11-17 03:30:17,024 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 03:30:17,026 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 03:30:17,026 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 03:30:17,027 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 03:30:17,031 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 03:30:17,031 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:30:17" (1/1) ... [2024-11-17 03:30:17,032 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38e815ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:17, skipping insertion in model container [2024-11-17 03:30:17,032 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:30:17" (1/1) ... [2024-11-17 03:30:17,073 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 03:30:17,448 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:30:17,452 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:30:17,453 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:30:17,453 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:30:17,476 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:30:17,514 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) [2024-11-17 03:30:17,516 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@74df682d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:17, skipping insertion in model container [2024-11-17 03:30:17,516 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 03:30:17,516 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-17 03:30:17,518 INFO L158 Benchmark]: Toolchain (without parser) took 491.36ms. Allocated memory is still 167.8MB. Free memory was 116.6MB in the beginning and 97.0MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-17 03:30:17,518 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 167.8MB. Free memory is still 134.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-17 03:30:17,519 INFO L158 Benchmark]: CACSL2BoogieTranslator took 489.60ms. Allocated memory is still 167.8MB. Free memory was 116.6MB in the beginning and 97.0MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-17 03:30:17,519 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 167.8MB. Free memory is still 134.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 489.60ms. Allocated memory is still 167.8MB. Free memory was 116.6MB in the beginning and 97.0MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1058]: 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_93-evilcollapse_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 dad265ed8a17f32bb0a174302dfe188f9a15f60b81cc9c28a67851ab05270da2 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 03:30:19,124 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 03:30:19,195 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-17 03:30:19,200 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 03:30:19,200 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 03:30:19,220 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 03:30:19,223 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 03:30:19,224 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 03:30:19,224 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 03:30:19,225 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 03:30:19,226 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 03:30:19,226 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 03:30:19,227 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 03:30:19,227 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 03:30:19,227 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 03:30:19,230 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 03:30:19,230 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 03:30:19,230 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 03:30:19,230 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 03:30:19,230 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 03:30:19,231 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 03:30:19,232 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 03:30:19,232 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 03:30:19,232 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 03:30:19,232 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 03:30:19,233 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-17 03:30:19,233 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 03:30:19,233 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-17 03:30:19,233 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 03:30:19,233 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 03:30:19,234 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 03:30:19,234 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 03:30:19,234 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 03:30:19,235 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 03:30:19,235 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 03:30:19,235 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:30:19,236 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 03:30:19,236 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 03:30:19,236 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-17 03:30:19,236 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-17 03:30:19,237 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 03:30:19,237 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 03:30:19,237 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 03:30:19,237 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 03:30:19,238 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dad265ed8a17f32bb0a174302dfe188f9a15f60b81cc9c28a67851ab05270da2 [2024-11-17 03:30:19,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 03:30:19,528 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 03:30:19,530 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 03:30:19,531 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 03:30:19,531 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 03:30:19,532 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2024-11-17 03:30:20,768 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 03:30:20,981 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 03:30:20,981 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2024-11-17 03:30:20,996 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bb7a4349/92d60f1c0a97406dbe64aa770c9e3fc6/FLAG793a4ccd9 [2024-11-17 03:30:21,009 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bb7a4349/92d60f1c0a97406dbe64aa770c9e3fc6 [2024-11-17 03:30:21,011 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 03:30:21,012 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 03:30:21,013 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 03:30:21,013 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 03:30:21,017 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 03:30:21,018 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:30:21" (1/1) ... [2024-11-17 03:30:21,019 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f8bc192 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:21, skipping insertion in model container [2024-11-17 03:30:21,019 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:30:21" (1/1) ... [2024-11-17 03:30:21,065 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 03:30:21,464 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:30:21,465 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:30:21,465 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:30:21,465 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:30:21,493 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:30:21,528 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-17 03:30:21,536 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 03:30:21,569 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:30:21,570 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:30:21,570 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:30:21,570 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:30:21,584 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:30:21,605 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 03:30:21,643 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:30:21,644 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:30:21,645 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:30:21,645 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:30:21,656 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:30:21,732 INFO L204 MainTranslator]: Completed translation [2024-11-17 03:30:21,733 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:21 WrapperNode [2024-11-17 03:30:21,733 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 03:30:21,734 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 03:30:21,734 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 03:30:21,734 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 03:30:21,739 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:21" (1/1) ... [2024-11-17 03:30:21,765 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:21" (1/1) ... [2024-11-17 03:30:21,795 INFO L138 Inliner]: procedures = 285, calls = 126, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 292 [2024-11-17 03:30:21,795 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 03:30:21,796 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 03:30:21,796 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 03:30:21,796 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 03:30:21,805 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:21" (1/1) ... [2024-11-17 03:30:21,805 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:21" (1/1) ... [2024-11-17 03:30:21,810 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:21" (1/1) ... [2024-11-17 03:30:21,839 INFO L175 MemorySlicer]: Split 98 memory accesses to 4 slices as follows [2, 5, 2, 89]. 91 percent of accesses are in the largest equivalence class. The 77 initializations are split as follows [2, 5, 0, 70]. The 12 writes are split as follows [0, 0, 1, 11]. [2024-11-17 03:30:21,840 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:21" (1/1) ... [2024-11-17 03:30:21,840 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:21" (1/1) ... [2024-11-17 03:30:21,860 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:21" (1/1) ... [2024-11-17 03:30:21,861 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:21" (1/1) ... [2024-11-17 03:30:21,864 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:21" (1/1) ... [2024-11-17 03:30:21,868 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:21" (1/1) ... [2024-11-17 03:30:21,873 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 03:30:21,874 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 03:30:21,874 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 03:30:21,874 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 03:30:21,874 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:21" (1/1) ... [2024-11-17 03:30:21,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:30:21,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:30:21,905 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) [2024-11-17 03:30:21,908 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 [2024-11-17 03:30:21,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-17 03:30:21,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-17 03:30:21,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-17 03:30:21,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2024-11-17 03:30:21,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-17 03:30:21,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-17 03:30:21,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-17 03:30:21,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-17 03:30:21,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-17 03:30:21,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-17 03:30:21,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-17 03:30:21,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-17 03:30:21,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-17 03:30:21,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2024-11-17 03:30:21,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-17 03:30:21,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-17 03:30:21,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-17 03:30:21,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-17 03:30:21,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-17 03:30:21,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-17 03:30:21,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-17 03:30:21,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-11-17 03:30:21,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-11-17 03:30:21,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2024-11-17 03:30:21,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2024-11-17 03:30:21,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2024-11-17 03:30:21,948 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-17 03:30:21,948 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-17 03:30:21,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-17 03:30:21,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 03:30:21,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-17 03:30:21,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-17 03:30:21,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-17 03:30:21,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-17 03:30:21,949 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-17 03:30:21,949 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-17 03:30:21,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 03:30:21,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 03:30:21,952 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 03:30:22,123 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 03:30:22,125 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 03:30:22,744 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L1082: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2024-11-17 03:30:22,744 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L1082-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2024-11-17 03:30:22,885 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 03:30:22,886 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 03:30:24,399 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 03:30:24,399 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 03:30:24,400 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:30:24 BoogieIcfgContainer [2024-11-17 03:30:24,400 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 03:30:24,402 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 03:30:24,402 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 03:30:24,405 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 03:30:24,405 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:30:21" (1/3) ... [2024-11-17 03:30:24,406 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@665dc9d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:30:24, skipping insertion in model container [2024-11-17 03:30:24,406 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:21" (2/3) ... [2024-11-17 03:30:24,407 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@665dc9d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:30:24, skipping insertion in model container [2024-11-17 03:30:24,407 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:30:24" (3/3) ... [2024-11-17 03:30:24,408 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_93-evilcollapse_racefree.i [2024-11-17 03:30:24,422 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 03:30:24,422 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2024-11-17 03:30:24,422 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 03:30:24,480 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-17 03:30:24,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 150 transitions, 307 flow [2024-11-17 03:30:24,570 INFO L124 PetriNetUnfolderBase]: 27/168 cut-off events. [2024-11-17 03:30:24,570 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-17 03:30:24,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 168 events. 27/168 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 550 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 96. Up to 4 conditions per place. [2024-11-17 03:30:24,575 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 150 transitions, 307 flow [2024-11-17 03:30:24,578 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 128 places, 150 transitions, 307 flow [2024-11-17 03:30:24,585 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:30:24,592 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;@6a3f66b9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:30:24,592 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2024-11-17 03:30:24,599 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:30:24,600 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-17 03:30:24,600 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:30:24,600 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:24,601 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:30:24,601 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-17 03:30:24,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:24,607 INFO L85 PathProgramCache]: Analyzing trace with hash 25251732, now seen corresponding path program 1 times [2024-11-17 03:30:24,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:30:24,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [179544427] [2024-11-17 03:30:24,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:24,620 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 [2024-11-17 03:30:24,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:30:24,623 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) [2024-11-17 03:30:24,625 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 [2024-11-17 03:30:24,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:30:24,756 INFO L255 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 03:30:24,760 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:30:24,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:24,826 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:30:24,827 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:30:24,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [179544427] [2024-11-17 03:30:24,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [179544427] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:30:24,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:30:24,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:30:24,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009810898] [2024-11-17 03:30:24,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:30:24,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:30:24,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:30:24,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:30:24,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:30:25,013 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 150 [2024-11-17 03:30:25,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 150 transitions, 307 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) [2024-11-17 03:30:25,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:30:25,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 150 [2024-11-17 03:30:25,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:30:25,410 INFO L124 PetriNetUnfolderBase]: 121/573 cut-off events. [2024-11-17 03:30:25,411 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-17 03:30:25,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 842 conditions, 573 events. 121/573 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3536 event pairs, 61 based on Foata normal form. 129/577 useless extension candidates. Maximal degree in co-relation 737. Up to 171 conditions per place. [2024-11-17 03:30:25,416 INFO L140 encePairwiseOnDemand]: 123/150 looper letters, 65 selfloop transitions, 4 changer transitions 0/149 dead transitions. [2024-11-17 03:30:25,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 149 transitions, 443 flow [2024-11-17 03:30:25,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:30:25,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:30:25,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 426 transitions. [2024-11-17 03:30:25,427 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.71 [2024-11-17 03:30:25,429 INFO L175 Difference]: Start difference. First operand has 128 places, 150 transitions, 307 flow. Second operand 4 states and 426 transitions. [2024-11-17 03:30:25,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 149 transitions, 443 flow [2024-11-17 03:30:25,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 149 transitions, 443 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:30:25,436 INFO L231 Difference]: Finished difference. Result has 127 places, 127 transitions, 275 flow [2024-11-17 03:30:25,437 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=275, PETRI_PLACES=127, PETRI_TRANSITIONS=127} [2024-11-17 03:30:25,440 INFO L277 CegarLoopForPetriNet]: 128 programPoint places, -1 predicate places. [2024-11-17 03:30:25,440 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 127 transitions, 275 flow [2024-11-17 03:30:25,440 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) [2024-11-17 03:30:25,440 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:25,441 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:30:25,446 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 [2024-11-17 03:30:25,641 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 [2024-11-17 03:30:25,642 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-17 03:30:25,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:25,642 INFO L85 PathProgramCache]: Analyzing trace with hash 25251733, now seen corresponding path program 1 times [2024-11-17 03:30:25,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:30:25,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1291065966] [2024-11-17 03:30:25,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:25,643 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 [2024-11-17 03:30:25,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:30:25,727 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) [2024-11-17 03:30:25,728 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 [2024-11-17 03:30:25,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:30:25,829 INFO L255 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-17 03:30:25,830 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:30:25,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:25,877 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:30:25,877 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:30:25,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1291065966] [2024-11-17 03:30:25,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1291065966] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:30:25,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:30:25,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:30:25,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270496525] [2024-11-17 03:30:25,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:30:25,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:30:25,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:30:25,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:30:25,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:30:26,131 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 150 [2024-11-17 03:30:26,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 127 transitions, 275 flow. Second operand has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 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) [2024-11-17 03:30:26,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:30:26,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 150 [2024-11-17 03:30:26,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:30:26,395 INFO L124 PetriNetUnfolderBase]: 123/607 cut-off events. [2024-11-17 03:30:26,396 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-11-17 03:30:26,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 935 conditions, 607 events. 123/607 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3641 event pairs, 100 based on Foata normal form. 3/482 useless extension candidates. Maximal degree in co-relation 803. Up to 266 conditions per place. [2024-11-17 03:30:26,400 INFO L140 encePairwiseOnDemand]: 142/150 looper letters, 49 selfloop transitions, 5 changer transitions 0/131 dead transitions. [2024-11-17 03:30:26,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 131 transitions, 397 flow [2024-11-17 03:30:26,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:30:26,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:30:26,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 381 transitions. [2024-11-17 03:30:26,403 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.635 [2024-11-17 03:30:26,403 INFO L175 Difference]: Start difference. First operand has 127 places, 127 transitions, 275 flow. Second operand 4 states and 381 transitions. [2024-11-17 03:30:26,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 131 transitions, 397 flow [2024-11-17 03:30:26,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 131 transitions, 385 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 03:30:26,406 INFO L231 Difference]: Finished difference. Result has 129 places, 131 transitions, 308 flow [2024-11-17 03:30:26,407 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=308, PETRI_PLACES=129, PETRI_TRANSITIONS=131} [2024-11-17 03:30:26,407 INFO L277 CegarLoopForPetriNet]: 128 programPoint places, 1 predicate places. [2024-11-17 03:30:26,408 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 131 transitions, 308 flow [2024-11-17 03:30:26,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 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) [2024-11-17 03:30:26,408 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:26,408 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:30:26,414 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 [2024-11-17 03:30:26,608 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 [2024-11-17 03:30:26,609 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-17 03:30:26,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:26,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1144013067, now seen corresponding path program 1 times [2024-11-17 03:30:26,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:30:26,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1276608139] [2024-11-17 03:30:26,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:26,611 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 [2024-11-17 03:30:26,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:30:26,613 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) [2024-11-17 03:30:26,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-17 03:30:26,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:30:26,731 INFO L255 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-17 03:30:26,732 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:30:26,763 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 [2024-11-17 03:30:26,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:26,768 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:30:26,768 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:30:26,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1276608139] [2024-11-17 03:30:26,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1276608139] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:30:26,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:30:26,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:30:26,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789970909] [2024-11-17 03:30:26,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:30:26,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:30:26,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:30:26,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:30:26,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:30:26,839 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 150 [2024-11-17 03:30:26,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 131 transitions, 308 flow. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 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) [2024-11-17 03:30:26,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:30:26,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 150 [2024-11-17 03:30:26,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:30:27,065 INFO L124 PetriNetUnfolderBase]: 123/606 cut-off events. [2024-11-17 03:30:27,065 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-11-17 03:30:27,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 919 conditions, 606 events. 123/606 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3636 event pairs, 100 based on Foata normal form. 0/478 useless extension candidates. Maximal degree in co-relation 883. Up to 260 conditions per place. [2024-11-17 03:30:27,068 INFO L140 encePairwiseOnDemand]: 147/150 looper letters, 45 selfloop transitions, 3 changer transitions 0/130 dead transitions. [2024-11-17 03:30:27,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 130 transitions, 402 flow [2024-11-17 03:30:27,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:30:27,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:30:27,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 303 transitions. [2024-11-17 03:30:27,071 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6733333333333333 [2024-11-17 03:30:27,071 INFO L175 Difference]: Start difference. First operand has 129 places, 131 transitions, 308 flow. Second operand 3 states and 303 transitions. [2024-11-17 03:30:27,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 130 transitions, 402 flow [2024-11-17 03:30:27,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 130 transitions, 399 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:30:27,074 INFO L231 Difference]: Finished difference. Result has 129 places, 130 transitions, 309 flow [2024-11-17 03:30:27,074 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=309, PETRI_PLACES=129, PETRI_TRANSITIONS=130} [2024-11-17 03:30:27,075 INFO L277 CegarLoopForPetriNet]: 128 programPoint places, 1 predicate places. [2024-11-17 03:30:27,075 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 130 transitions, 309 flow [2024-11-17 03:30:27,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 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) [2024-11-17 03:30:27,075 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:27,076 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:30:27,084 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 [2024-11-17 03:30:27,276 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 [2024-11-17 03:30:27,277 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-17 03:30:27,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:27,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1144013066, now seen corresponding path program 1 times [2024-11-17 03:30:27,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:30:27,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [897557357] [2024-11-17 03:30:27,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:27,282 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 [2024-11-17 03:30:27,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:30:27,283 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) [2024-11-17 03:30:27,284 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 [2024-11-17 03:30:27,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:30:27,406 INFO L255 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 03:30:27,408 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:30:27,416 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 [2024-11-17 03:30:27,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:27,423 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:30:27,423 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:30:27,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [897557357] [2024-11-17 03:30:27,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [897557357] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:30:27,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:30:27,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:30:27,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099797941] [2024-11-17 03:30:27,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:30:27,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:30:27,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:30:27,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:30:27,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:30:27,531 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 150 [2024-11-17 03:30:27,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 130 transitions, 309 flow. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 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) [2024-11-17 03:30:27,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:30:27,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 150 [2024-11-17 03:30:27,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:30:27,735 INFO L124 PetriNetUnfolderBase]: 123/605 cut-off events. [2024-11-17 03:30:27,735 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-17 03:30:27,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 919 conditions, 605 events. 123/605 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3630 event pairs, 100 based on Foata normal form. 0/477 useless extension candidates. Maximal degree in co-relation 882. Up to 260 conditions per place. [2024-11-17 03:30:27,738 INFO L140 encePairwiseOnDemand]: 147/150 looper letters, 45 selfloop transitions, 3 changer transitions 0/129 dead transitions. [2024-11-17 03:30:27,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 129 transitions, 403 flow [2024-11-17 03:30:27,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:30:27,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:30:27,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 303 transitions. [2024-11-17 03:30:27,740 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6733333333333333 [2024-11-17 03:30:27,740 INFO L175 Difference]: Start difference. First operand has 129 places, 130 transitions, 309 flow. Second operand 3 states and 303 transitions. [2024-11-17 03:30:27,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 129 transitions, 403 flow [2024-11-17 03:30:27,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 129 transitions, 397 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:30:27,743 INFO L231 Difference]: Finished difference. Result has 128 places, 129 transitions, 307 flow [2024-11-17 03:30:27,743 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=307, PETRI_PLACES=128, PETRI_TRANSITIONS=129} [2024-11-17 03:30:27,744 INFO L277 CegarLoopForPetriNet]: 128 programPoint places, 0 predicate places. [2024-11-17 03:30:27,744 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 129 transitions, 307 flow [2024-11-17 03:30:27,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 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) [2024-11-17 03:30:27,745 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:27,745 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:30:27,750 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 (5)] Forceful destruction successful, exit code 0 [2024-11-17 03:30:27,945 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 [2024-11-17 03:30:27,946 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-17 03:30:27,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:27,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1104665899, now seen corresponding path program 1 times [2024-11-17 03:30:27,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:30:27,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [201135188] [2024-11-17 03:30:27,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:27,947 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 [2024-11-17 03:30:27,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:30:27,949 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) [2024-11-17 03:30:27,949 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 [2024-11-17 03:30:28,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:30:28,084 INFO L255 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 03:30:28,087 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:30:28,092 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 [2024-11-17 03:30:28,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:28,107 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:30:28,107 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:30:28,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [201135188] [2024-11-17 03:30:28,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [201135188] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:30:28,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:30:28,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:30:28,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39460177] [2024-11-17 03:30:28,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:30:28,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:30:28,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:30:28,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:30:28,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:30:28,213 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 150 [2024-11-17 03:30:28,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 129 transitions, 307 flow. Second operand has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 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) [2024-11-17 03:30:28,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:30:28,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 150 [2024-11-17 03:30:28,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:30:28,478 INFO L124 PetriNetUnfolderBase]: 123/603 cut-off events. [2024-11-17 03:30:28,478 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-11-17 03:30:28,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 920 conditions, 603 events. 123/603 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3607 event pairs, 100 based on Foata normal form. 1/479 useless extension candidates. Maximal degree in co-relation 882. Up to 260 conditions per place. [2024-11-17 03:30:28,481 INFO L140 encePairwiseOnDemand]: 143/150 looper letters, 43 selfloop transitions, 7 changer transitions 0/127 dead transitions. [2024-11-17 03:30:28,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 127 transitions, 403 flow [2024-11-17 03:30:28,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 03:30:28,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 03:30:28,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 448 transitions. [2024-11-17 03:30:28,483 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5973333333333334 [2024-11-17 03:30:28,483 INFO L175 Difference]: Start difference. First operand has 128 places, 129 transitions, 307 flow. Second operand 5 states and 448 transitions. [2024-11-17 03:30:28,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 127 transitions, 403 flow [2024-11-17 03:30:28,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 127 transitions, 397 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:30:28,488 INFO L231 Difference]: Finished difference. Result has 128 places, 127 transitions, 311 flow [2024-11-17 03:30:28,489 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=311, PETRI_PLACES=128, PETRI_TRANSITIONS=127} [2024-11-17 03:30:28,489 INFO L277 CegarLoopForPetriNet]: 128 programPoint places, 0 predicate places. [2024-11-17 03:30:28,489 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 127 transitions, 311 flow [2024-11-17 03:30:28,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 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) [2024-11-17 03:30:28,490 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:28,490 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:30:28,496 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 (6)] Ended with exit code 0 [2024-11-17 03:30:28,690 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 [2024-11-17 03:30:28,691 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-17 03:30:28,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:28,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1104665898, now seen corresponding path program 1 times [2024-11-17 03:30:28,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:30:28,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2084501827] [2024-11-17 03:30:28,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:28,692 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 [2024-11-17 03:30:28,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:30:28,694 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) [2024-11-17 03:30:28,695 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 [2024-11-17 03:30:28,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:30:28,822 INFO L255 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-17 03:30:28,823 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:30:28,830 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 [2024-11-17 03:30:28,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:28,854 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:30:28,854 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:30:28,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2084501827] [2024-11-17 03:30:28,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2084501827] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:30:28,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:30:28,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:30:28,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800106715] [2024-11-17 03:30:28,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:30:28,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:30:28,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:30:28,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:30:28,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:30:29,009 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 150 [2024-11-17 03:30:29,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 127 transitions, 311 flow. Second operand has 4 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 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) [2024-11-17 03:30:29,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:30:29,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 150 [2024-11-17 03:30:29,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:30:29,260 INFO L124 PetriNetUnfolderBase]: 123/601 cut-off events. [2024-11-17 03:30:29,260 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-11-17 03:30:29,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 922 conditions, 601 events. 123/601 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3604 event pairs, 100 based on Foata normal form. 2/478 useless extension candidates. Maximal degree in co-relation 880. Up to 262 conditions per place. [2024-11-17 03:30:29,264 INFO L140 encePairwiseOnDemand]: 145/150 looper letters, 46 selfloop transitions, 4 changer transitions 0/125 dead transitions. [2024-11-17 03:30:29,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 125 transitions, 407 flow [2024-11-17 03:30:29,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:30:29,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:30:29,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 376 transitions. [2024-11-17 03:30:29,266 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6266666666666667 [2024-11-17 03:30:29,267 INFO L175 Difference]: Start difference. First operand has 128 places, 127 transitions, 311 flow. Second operand 4 states and 376 transitions. [2024-11-17 03:30:29,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 125 transitions, 407 flow [2024-11-17 03:30:29,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 125 transitions, 393 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-17 03:30:29,271 INFO L231 Difference]: Finished difference. Result has 125 places, 125 transitions, 301 flow [2024-11-17 03:30:29,271 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=301, PETRI_PLACES=125, PETRI_TRANSITIONS=125} [2024-11-17 03:30:29,272 INFO L277 CegarLoopForPetriNet]: 128 programPoint places, -3 predicate places. [2024-11-17 03:30:29,272 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 125 transitions, 301 flow [2024-11-17 03:30:29,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 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) [2024-11-17 03:30:29,272 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:29,272 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:30:29,278 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 [2024-11-17 03:30:29,473 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 [2024-11-17 03:30:29,473 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-17 03:30:29,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:29,474 INFO L85 PathProgramCache]: Analyzing trace with hash -724787381, now seen corresponding path program 1 times [2024-11-17 03:30:29,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:30:29,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1265756556] [2024-11-17 03:30:29,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:29,475 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 [2024-11-17 03:30:29,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:30:29,477 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) [2024-11-17 03:30:29,478 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 [2024-11-17 03:30:29,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:30:29,587 INFO L255 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-17 03:30:29,588 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:30:29,596 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:29,596 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:30:29,596 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:30:29,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1265756556] [2024-11-17 03:30:29,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1265756556] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:30:29,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:30:29,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:30:29,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841819511] [2024-11-17 03:30:29,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:30:29,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:30:29,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:30:29,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:30:29,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:30:29,601 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 150 [2024-11-17 03:30:29,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 125 transitions, 301 flow. Second operand has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 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) [2024-11-17 03:30:29,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:30:29,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 150 [2024-11-17 03:30:29,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:30:29,819 INFO L124 PetriNetUnfolderBase]: 122/619 cut-off events. [2024-11-17 03:30:29,819 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-11-17 03:30:29,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 942 conditions, 619 events. 122/619 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3612 event pairs, 100 based on Foata normal form. 2/488 useless extension candidates. Maximal degree in co-relation 909. Up to 261 conditions per place. [2024-11-17 03:30:29,823 INFO L140 encePairwiseOnDemand]: 147/150 looper letters, 50 selfloop transitions, 3 changer transitions 0/129 dead transitions. [2024-11-17 03:30:29,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 129 transitions, 421 flow [2024-11-17 03:30:29,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:30:29,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:30:29,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 309 transitions. [2024-11-17 03:30:29,825 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6866666666666666 [2024-11-17 03:30:29,825 INFO L175 Difference]: Start difference. First operand has 125 places, 125 transitions, 301 flow. Second operand 3 states and 309 transitions. [2024-11-17 03:30:29,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 129 transitions, 421 flow [2024-11-17 03:30:29,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 129 transitions, 405 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-17 03:30:29,829 INFO L231 Difference]: Finished difference. Result has 125 places, 125 transitions, 302 flow [2024-11-17 03:30:29,829 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=302, PETRI_PLACES=125, PETRI_TRANSITIONS=125} [2024-11-17 03:30:29,830 INFO L277 CegarLoopForPetriNet]: 128 programPoint places, -3 predicate places. [2024-11-17 03:30:29,831 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 125 transitions, 302 flow [2024-11-17 03:30:29,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 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) [2024-11-17 03:30:29,831 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:29,831 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:30:29,836 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-11-17 03:30:30,032 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 [2024-11-17 03:30:30,032 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-17 03:30:30,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:30,033 INFO L85 PathProgramCache]: Analyzing trace with hash -726983567, now seen corresponding path program 1 times [2024-11-17 03:30:30,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:30:30,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [608182883] [2024-11-17 03:30:30,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:30,034 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 [2024-11-17 03:30:30,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:30:30,035 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) [2024-11-17 03:30:30,036 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 [2024-11-17 03:30:30,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:30:30,518 INFO L255 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-17 03:30:30,521 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:30:30,568 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-17 03:30:30,568 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 [2024-11-17 03:30:30,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:30,595 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:30:30,595 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:30:30,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [608182883] [2024-11-17 03:30:30,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [608182883] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:30:30,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:30:30,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:30:30,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573789292] [2024-11-17 03:30:30,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:30:30,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:30:30,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:30:30,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:30:30,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:30:30,720 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 150 [2024-11-17 03:30:30,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 125 transitions, 302 flow. Second operand has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 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) [2024-11-17 03:30:30,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:30:30,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 150 [2024-11-17 03:30:30,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:30:30,952 INFO L124 PetriNetUnfolderBase]: 121/589 cut-off events. [2024-11-17 03:30:30,952 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-11-17 03:30:30,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 914 conditions, 589 events. 121/589 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3469 event pairs, 61 based on Foata normal form. 2/468 useless extension candidates. Maximal degree in co-relation 879. Up to 174 conditions per place. [2024-11-17 03:30:30,955 INFO L140 encePairwiseOnDemand]: 144/150 looper letters, 66 selfloop transitions, 5 changer transitions 0/145 dead transitions. [2024-11-17 03:30:30,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 145 transitions, 484 flow [2024-11-17 03:30:30,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:30:30,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:30:30,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 397 transitions. [2024-11-17 03:30:30,957 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6616666666666666 [2024-11-17 03:30:30,957 INFO L175 Difference]: Start difference. First operand has 125 places, 125 transitions, 302 flow. Second operand 4 states and 397 transitions. [2024-11-17 03:30:30,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 145 transitions, 484 flow [2024-11-17 03:30:30,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 145 transitions, 481 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:30:30,960 INFO L231 Difference]: Finished difference. Result has 125 places, 123 transitions, 305 flow [2024-11-17 03:30:30,960 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=305, PETRI_PLACES=125, PETRI_TRANSITIONS=123} [2024-11-17 03:30:30,963 INFO L277 CegarLoopForPetriNet]: 128 programPoint places, -3 predicate places. [2024-11-17 03:30:30,963 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 123 transitions, 305 flow [2024-11-17 03:30:30,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 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) [2024-11-17 03:30:30,963 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:30,963 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:30:30,972 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 (9)] Forceful destruction successful, exit code 0 [2024-11-17 03:30:31,164 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 [2024-11-17 03:30:31,167 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-17 03:30:31,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:31,167 INFO L85 PathProgramCache]: Analyzing trace with hash -726983566, now seen corresponding path program 1 times [2024-11-17 03:30:31,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:30:31,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1250355270] [2024-11-17 03:30:31,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:31,168 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:30:31,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:30:31,169 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) [2024-11-17 03:30:31,170 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 [2024-11-17 03:30:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:30:31,649 INFO L255 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-17 03:30:31,650 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:30:31,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 03:30:31,736 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 [2024-11-17 03:30:31,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:31,780 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:30:31,780 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:30:31,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1250355270] [2024-11-17 03:30:31,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1250355270] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:30:31,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:30:31,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:30:31,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126889906] [2024-11-17 03:30:31,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:30:31,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 03:30:31,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:30:31,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 03:30:31,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-17 03:30:32,005 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 150 [2024-11-17 03:30:32,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 123 transitions, 305 flow. Second operand has 5 states, 5 states have (on average 81.4) internal successors, (407), 5 states have internal predecessors, (407), 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) [2024-11-17 03:30:32,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:30:32,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 150 [2024-11-17 03:30:32,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:30:32,318 INFO L124 PetriNetUnfolderBase]: 124/649 cut-off events. [2024-11-17 03:30:32,318 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2024-11-17 03:30:32,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1024 conditions, 649 events. 124/649 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3896 event pairs, 101 based on Foata normal form. 2/507 useless extension candidates. Maximal degree in co-relation 930. Up to 273 conditions per place. [2024-11-17 03:30:32,321 INFO L140 encePairwiseOnDemand]: 144/150 looper letters, 55 selfloop transitions, 5 changer transitions 0/130 dead transitions. [2024-11-17 03:30:32,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 130 transitions, 451 flow [2024-11-17 03:30:32,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:30:32,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:30:32,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 379 transitions. [2024-11-17 03:30:32,324 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6316666666666667 [2024-11-17 03:30:32,324 INFO L175 Difference]: Start difference. First operand has 125 places, 123 transitions, 305 flow. Second operand 4 states and 379 transitions. [2024-11-17 03:30:32,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 130 transitions, 451 flow [2024-11-17 03:30:32,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 130 transitions, 435 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 03:30:32,327 INFO L231 Difference]: Finished difference. Result has 127 places, 127 transitions, 337 flow [2024-11-17 03:30:32,327 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=337, PETRI_PLACES=127, PETRI_TRANSITIONS=127} [2024-11-17 03:30:32,328 INFO L277 CegarLoopForPetriNet]: 128 programPoint places, -1 predicate places. [2024-11-17 03:30:32,328 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 127 transitions, 337 flow [2024-11-17 03:30:32,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 81.4) internal successors, (407), 5 states have internal predecessors, (407), 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) [2024-11-17 03:30:32,328 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:32,328 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:30:32,336 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-11-17 03:30:32,529 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 [2024-11-17 03:30:32,529 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-17 03:30:32,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:32,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1061653284, now seen corresponding path program 1 times [2024-11-17 03:30:32,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:30:32,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1241173408] [2024-11-17 03:30:32,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:32,530 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 [2024-11-17 03:30:32,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:30:32,533 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) [2024-11-17 03:30:32,534 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 [2024-11-17 03:30:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:30:33,110 INFO L255 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-17 03:30:33,112 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:30:33,179 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 [2024-11-17 03:30:33,209 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 [2024-11-17 03:30:33,265 INFO L349 Elim1Store]: treesize reduction 17, result has 19.0 percent of original size [2024-11-17 03:30:33,265 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 [2024-11-17 03:30:33,291 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 [2024-11-17 03:30:33,324 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 [2024-11-17 03:30:33,344 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 [2024-11-17 03:30:33,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:33,383 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:30:33,383 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:30:33,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1241173408] [2024-11-17 03:30:33,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1241173408] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:30:33,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:30:33,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-17 03:30:33,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533504116] [2024-11-17 03:30:33,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:30:33,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-17 03:30:33,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:30:33,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-17 03:30:33,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-17 03:30:34,180 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 150 [2024-11-17 03:30:34,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 127 transitions, 337 flow. Second operand has 10 states, 10 states have (on average 73.0) internal successors, (730), 10 states have internal predecessors, (730), 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) [2024-11-17 03:30:34,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:30:34,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 150 [2024-11-17 03:30:34,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:30:34,928 INFO L124 PetriNetUnfolderBase]: 122/619 cut-off events. [2024-11-17 03:30:34,928 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-11-17 03:30:34,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1000 conditions, 619 events. 122/619 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3717 event pairs, 61 based on Foata normal form. 0/498 useless extension candidates. Maximal degree in co-relation 905. Up to 187 conditions per place. [2024-11-17 03:30:34,931 INFO L140 encePairwiseOnDemand]: 138/150 looper letters, 75 selfloop transitions, 16 changer transitions 0/158 dead transitions. [2024-11-17 03:30:34,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 158 transitions, 589 flow [2024-11-17 03:30:34,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-17 03:30:34,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-17 03:30:34,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 876 transitions. [2024-11-17 03:30:34,934 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5309090909090909 [2024-11-17 03:30:34,934 INFO L175 Difference]: Start difference. First operand has 127 places, 127 transitions, 337 flow. Second operand 11 states and 876 transitions. [2024-11-17 03:30:34,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 158 transitions, 589 flow [2024-11-17 03:30:34,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 158 transitions, 587 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:30:34,937 INFO L231 Difference]: Finished difference. Result has 141 places, 133 transitions, 416 flow [2024-11-17 03:30:34,938 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=416, PETRI_PLACES=141, PETRI_TRANSITIONS=133} [2024-11-17 03:30:34,938 INFO L277 CegarLoopForPetriNet]: 128 programPoint places, 13 predicate places. [2024-11-17 03:30:34,938 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 133 transitions, 416 flow [2024-11-17 03:30:34,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 73.0) internal successors, (730), 10 states have internal predecessors, (730), 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) [2024-11-17 03:30:34,939 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:34,939 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:30:34,944 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 [2024-11-17 03:30:35,139 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 [2024-11-17 03:30:35,139 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-17 03:30:35,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:35,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1061653283, now seen corresponding path program 1 times [2024-11-17 03:30:35,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:30:35,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1816722364] [2024-11-17 03:30:35,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:35,141 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 [2024-11-17 03:30:35,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:30:35,142 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) [2024-11-17 03:30:35,142 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 [2024-11-17 03:30:35,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:30:35,747 INFO L255 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-17 03:30:35,750 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:30:35,820 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 [2024-11-17 03:30:35,839 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 [2024-11-17 03:30:35,874 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 [2024-11-17 03:30:35,888 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 [2024-11-17 03:30:35,947 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-17 03:30:35,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2024-11-17 03:30:35,963 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-17 03:30:35,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-17 03:30:36,002 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 [2024-11-17 03:30:36,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-17 03:30:36,050 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 [2024-11-17 03:30:36,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-17 03:30:36,082 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 [2024-11-17 03:30:36,088 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 [2024-11-17 03:30:36,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:36,130 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:30:36,130 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:30:36,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1816722364] [2024-11-17 03:30:36,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1816722364] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:30:36,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:30:36,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-17 03:30:36,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373201078] [2024-11-17 03:30:36,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:30:36,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-17 03:30:36,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:30:36,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-17 03:30:36,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-17 03:30:36,874 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 150 [2024-11-17 03:30:36,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 133 transitions, 416 flow. Second operand has 10 states, 10 states have (on average 66.0) internal successors, (660), 10 states have internal predecessors, (660), 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) [2024-11-17 03:30:36,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:30:36,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 150 [2024-11-17 03:30:36,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:30:37,497 INFO L124 PetriNetUnfolderBase]: 124/646 cut-off events. [2024-11-17 03:30:37,498 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2024-11-17 03:30:37,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1102 conditions, 646 events. 124/646 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3881 event pairs, 101 based on Foata normal form. 1/522 useless extension candidates. Maximal degree in co-relation 962. Up to 286 conditions per place. [2024-11-17 03:30:37,501 INFO L140 encePairwiseOnDemand]: 139/150 looper letters, 76 selfloop transitions, 10 changer transitions 0/148 dead transitions. [2024-11-17 03:30:37,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 148 transitions, 641 flow [2024-11-17 03:30:37,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 03:30:37,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-17 03:30:37,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 731 transitions. [2024-11-17 03:30:37,504 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48733333333333334 [2024-11-17 03:30:37,504 INFO L175 Difference]: Start difference. First operand has 141 places, 133 transitions, 416 flow. Second operand 10 states and 731 transitions. [2024-11-17 03:30:37,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 148 transitions, 641 flow [2024-11-17 03:30:37,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 148 transitions, 621 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-17 03:30:37,507 INFO L231 Difference]: Finished difference. Result has 149 places, 136 transitions, 448 flow [2024-11-17 03:30:37,507 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=448, PETRI_PLACES=149, PETRI_TRANSITIONS=136} [2024-11-17 03:30:37,508 INFO L277 CegarLoopForPetriNet]: 128 programPoint places, 21 predicate places. [2024-11-17 03:30:37,508 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 136 transitions, 448 flow [2024-11-17 03:30:37,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 66.0) internal successors, (660), 10 states have internal predecessors, (660), 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) [2024-11-17 03:30:37,509 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:37,509 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:30:37,515 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 [2024-11-17 03:30:37,709 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 [2024-11-17 03:30:37,709 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-17 03:30:37,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:37,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1448487297, now seen corresponding path program 1 times [2024-11-17 03:30:37,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:30:37,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [352498253] [2024-11-17 03:30:37,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:37,710 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 [2024-11-17 03:30:37,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:30:37,712 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) [2024-11-17 03:30:37,712 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 [2024-11-17 03:30:37,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:30:37,856 INFO L255 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-17 03:30:37,858 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:30:37,861 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 [2024-11-17 03:30:37,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:37,873 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:30:37,873 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:30:37,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [352498253] [2024-11-17 03:30:37,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [352498253] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:30:37,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:30:37,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:30:37,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332573320] [2024-11-17 03:30:37,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:30:37,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:30:37,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:30:37,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:30:37,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:30:37,988 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 150 [2024-11-17 03:30:37,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 136 transitions, 448 flow. Second operand has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 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) [2024-11-17 03:30:37,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:30:37,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 150 [2024-11-17 03:30:37,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:30:38,210 INFO L124 PetriNetUnfolderBase]: 123/636 cut-off events. [2024-11-17 03:30:38,211 INFO L125 PetriNetUnfolderBase]: For 121/121 co-relation queries the response was YES. [2024-11-17 03:30:38,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1060 conditions, 636 events. 123/636 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3835 event pairs, 100 based on Foata normal form. 0/517 useless extension candidates. Maximal degree in co-relation 971. Up to 261 conditions per place. [2024-11-17 03:30:38,214 INFO L140 encePairwiseOnDemand]: 145/150 looper letters, 50 selfloop transitions, 11 changer transitions 0/134 dead transitions. [2024-11-17 03:30:38,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 134 transitions, 566 flow [2024-11-17 03:30:38,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:30:38,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:30:38,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 376 transitions. [2024-11-17 03:30:38,215 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6266666666666667 [2024-11-17 03:30:38,216 INFO L175 Difference]: Start difference. First operand has 149 places, 136 transitions, 448 flow. Second operand 4 states and 376 transitions. [2024-11-17 03:30:38,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 134 transitions, 566 flow [2024-11-17 03:30:38,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 134 transitions, 562 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:30:38,218 INFO L231 Difference]: Finished difference. Result has 148 places, 134 transitions, 462 flow [2024-11-17 03:30:38,219 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=462, PETRI_PLACES=148, PETRI_TRANSITIONS=134} [2024-11-17 03:30:38,219 INFO L277 CegarLoopForPetriNet]: 128 programPoint places, 20 predicate places. [2024-11-17 03:30:38,219 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 134 transitions, 462 flow [2024-11-17 03:30:38,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 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) [2024-11-17 03:30:38,220 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:38,220 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:30:38,230 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 [2024-11-17 03:30:38,420 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 [2024-11-17 03:30:38,420 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-17 03:30:38,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:38,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1448487298, now seen corresponding path program 1 times [2024-11-17 03:30:38,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:30:38,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [507565337] [2024-11-17 03:30:38,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:38,421 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:30:38,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:30:38,423 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) [2024-11-17 03:30:38,423 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 [2024-11-17 03:30:38,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:30:38,575 INFO L255 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-17 03:30:38,576 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:30:38,579 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 [2024-11-17 03:30:38,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:38,606 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:30:38,606 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:30:38,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [507565337] [2024-11-17 03:30:38,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [507565337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:30:38,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:30:38,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:30:38,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762784821] [2024-11-17 03:30:38,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:30:38,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:30:38,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:30:38,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:30:38,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:30:38,776 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 150 [2024-11-17 03:30:38,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 134 transitions, 462 flow. Second operand has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 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) [2024-11-17 03:30:38,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:30:38,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 150 [2024-11-17 03:30:38,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:30:38,962 INFO L124 PetriNetUnfolderBase]: 123/628 cut-off events. [2024-11-17 03:30:38,962 INFO L125 PetriNetUnfolderBase]: For 176/176 co-relation queries the response was YES. [2024-11-17 03:30:38,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1054 conditions, 628 events. 123/628 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3780 event pairs, 100 based on Foata normal form. 8/517 useless extension candidates. Maximal degree in co-relation 967. Up to 261 conditions per place. [2024-11-17 03:30:38,965 INFO L140 encePairwiseOnDemand]: 145/150 looper letters, 48 selfloop transitions, 11 changer transitions 0/132 dead transitions. [2024-11-17 03:30:38,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 132 transitions, 576 flow [2024-11-17 03:30:38,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:30:38,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:30:38,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 382 transitions. [2024-11-17 03:30:38,966 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6366666666666667 [2024-11-17 03:30:38,966 INFO L175 Difference]: Start difference. First operand has 148 places, 134 transitions, 462 flow. Second operand 4 states and 382 transitions. [2024-11-17 03:30:38,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 132 transitions, 576 flow [2024-11-17 03:30:38,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 132 transitions, 554 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 03:30:38,968 INFO L231 Difference]: Finished difference. Result has 146 places, 132 transitions, 458 flow [2024-11-17 03:30:38,969 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=458, PETRI_PLACES=146, PETRI_TRANSITIONS=132} [2024-11-17 03:30:38,969 INFO L277 CegarLoopForPetriNet]: 128 programPoint places, 18 predicate places. [2024-11-17 03:30:38,969 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 132 transitions, 458 flow [2024-11-17 03:30:38,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 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) [2024-11-17 03:30:38,969 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:38,969 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:30:38,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2024-11-17 03:30:39,170 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 [2024-11-17 03:30:39,170 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-17 03:30:39,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:39,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1769443226, now seen corresponding path program 1 times [2024-11-17 03:30:39,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:30:39,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [983752160] [2024-11-17 03:30:39,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:39,171 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 [2024-11-17 03:30:39,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:30:39,172 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) [2024-11-17 03:30:39,173 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 [2024-11-17 03:30:39,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:30:39,349 INFO L255 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-17 03:30:39,350 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:30:39,369 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:39,370 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:30:39,402 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:39,403 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:30:39,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [983752160] [2024-11-17 03:30:39,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [983752160] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:30:39,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 03:30:39,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-11-17 03:30:39,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576152613] [2024-11-17 03:30:39,403 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 03:30:39,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 03:30:39,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:30:39,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 03:30:39,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-17 03:30:39,407 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 150 [2024-11-17 03:30:39,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 132 transitions, 458 flow. Second operand has 6 states, 6 states have (on average 89.0) internal successors, (534), 6 states have internal predecessors, (534), 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) [2024-11-17 03:30:39,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:30:39,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 150 [2024-11-17 03:30:39,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:30:39,740 INFO L124 PetriNetUnfolderBase]: 123/684 cut-off events. [2024-11-17 03:30:39,740 INFO L125 PetriNetUnfolderBase]: For 281/281 co-relation queries the response was YES. [2024-11-17 03:30:39,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1204 conditions, 684 events. 123/684 cut-off events. For 281/281 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 3999 event pairs, 100 based on Foata normal form. 6/567 useless extension candidates. Maximal degree in co-relation 1109. Up to 259 conditions per place. [2024-11-17 03:30:39,743 INFO L140 encePairwiseOnDemand]: 146/150 looper letters, 64 selfloop transitions, 11 changer transitions 0/147 dead transitions. [2024-11-17 03:30:39,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 147 transitions, 720 flow [2024-11-17 03:30:39,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 03:30:39,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 03:30:39,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 580 transitions. [2024-11-17 03:30:39,746 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6444444444444445 [2024-11-17 03:30:39,746 INFO L175 Difference]: Start difference. First operand has 146 places, 132 transitions, 458 flow. Second operand 6 states and 580 transitions. [2024-11-17 03:30:39,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 147 transitions, 720 flow [2024-11-17 03:30:39,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 147 transitions, 676 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 03:30:39,749 INFO L231 Difference]: Finished difference. Result has 152 places, 137 transitions, 518 flow [2024-11-17 03:30:39,750 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=518, PETRI_PLACES=152, PETRI_TRANSITIONS=137} [2024-11-17 03:30:39,750 INFO L277 CegarLoopForPetriNet]: 128 programPoint places, 24 predicate places. [2024-11-17 03:30:39,750 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 137 transitions, 518 flow [2024-11-17 03:30:39,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 89.0) internal successors, (534), 6 states have internal predecessors, (534), 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) [2024-11-17 03:30:39,751 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:39,751 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:30:39,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2024-11-17 03:30:39,955 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 [2024-11-17 03:30:39,955 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-17 03:30:39,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:39,956 INFO L85 PathProgramCache]: Analyzing trace with hash 913753890, now seen corresponding path program 1 times [2024-11-17 03:30:39,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:30:39,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [651243516] [2024-11-17 03:30:39,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:39,956 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 [2024-11-17 03:30:39,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:30:39,958 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) [2024-11-17 03:30:39,958 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 [2024-11-17 03:30:40,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:30:40,701 INFO L255 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-17 03:30:40,704 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:30:40,716 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 [2024-11-17 03:30:40,826 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 [2024-11-17 03:30:40,832 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 [2024-11-17 03:30:40,871 INFO L349 Elim1Store]: treesize reduction 33, result has 25.0 percent of original size [2024-11-17 03:30:40,871 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 18 treesize of output 20 [2024-11-17 03:30:40,882 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-17 03:30:40,883 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 [2024-11-17 03:30:40,914 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 [2024-11-17 03:30:40,921 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 [2024-11-17 03:30:40,960 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 [2024-11-17 03:30:40,964 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 [2024-11-17 03:30:40,983 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 [2024-11-17 03:30:40,989 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 [2024-11-17 03:30:41,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 21 treesize of output 9 [2024-11-17 03:30:41,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2024-11-17 03:30:41,066 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:41,067 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:30:41,142 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))) (and (forall ((v_ArrVal_579 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_579) |c_~#c~0.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_580 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_579 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_579) |c_~#c~0.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_580) |c_~#c~0.base|) .cse1)))))) is different from false [2024-11-17 03:30:41,176 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))) (and (forall ((v_ArrVal_579 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_579) |c_~#c~0.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_580 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_579 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_579) |c_~#c~0.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_580) |c_~#c~0.base|) .cse1)))))) is different from false [2024-11-17 03:30:41,348 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:30:41,348 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 108 treesize of output 109 [2024-11-17 03:30:41,362 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:30:41,363 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 100 treesize of output 85 [2024-11-17 03:30:41,416 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:30:41,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 121 [2024-11-17 03:30:41,452 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:30:41,453 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 184 treesize of output 163 [2024-11-17 03:30:41,465 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 91 treesize of output 85 [2024-11-17 03:30:41,473 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 85 treesize of output 79 [2024-11-17 03:30:41,516 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:30:41,516 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 88 treesize of output 112 [2024-11-17 03:30:41,529 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 75 treesize of output 63 [2024-11-17 03:30:42,491 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2024-11-17 03:30:42,491 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:30:42,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [651243516] [2024-11-17 03:30:42,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [651243516] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:30:42,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 03:30:42,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2024-11-17 03:30:42,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135505244] [2024-11-17 03:30:42,492 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 03:30:42,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-17 03:30:42,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:30:42,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-17 03:30:42,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=175, Unknown=2, NotChecked=54, Total=272 [2024-11-17 03:30:42,979 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 150 [2024-11-17 03:30:42,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 137 transitions, 518 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) [2024-11-17 03:30:42,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:30:42,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 150 [2024-11-17 03:30:42,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:30:45,137 INFO L124 PetriNetUnfolderBase]: 466/1342 cut-off events. [2024-11-17 03:30:45,137 INFO L125 PetriNetUnfolderBase]: For 229/229 co-relation queries the response was YES. [2024-11-17 03:30:45,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2625 conditions, 1342 events. 466/1342 cut-off events. For 229/229 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 9021 event pairs, 422 based on Foata normal form. 6/908 useless extension candidates. Maximal degree in co-relation 2533. Up to 952 conditions per place. [2024-11-17 03:30:45,144 INFO L140 encePairwiseOnDemand]: 140/150 looper letters, 86 selfloop transitions, 23 changer transitions 0/142 dead transitions. [2024-11-17 03:30:45,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 142 transitions, 750 flow [2024-11-17 03:30:45,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-17 03:30:45,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-17 03:30:45,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 490 transitions. [2024-11-17 03:30:45,147 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2722222222222222 [2024-11-17 03:30:45,147 INFO L175 Difference]: Start difference. First operand has 152 places, 137 transitions, 518 flow. Second operand 12 states and 490 transitions. [2024-11-17 03:30:45,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 142 transitions, 750 flow [2024-11-17 03:30:45,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 142 transitions, 732 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-11-17 03:30:45,150 INFO L231 Difference]: Finished difference. Result has 163 places, 138 transitions, 554 flow [2024-11-17 03:30:45,151 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=554, PETRI_PLACES=163, PETRI_TRANSITIONS=138} [2024-11-17 03:30:45,151 INFO L277 CegarLoopForPetriNet]: 128 programPoint places, 35 predicate places. [2024-11-17 03:30:45,151 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 138 transitions, 554 flow [2024-11-17 03:30:45,152 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) [2024-11-17 03:30:45,152 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:45,152 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:30:45,162 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 [2024-11-17 03:30:45,352 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 [2024-11-17 03:30:45,352 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-17 03:30:45,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:45,353 INFO L85 PathProgramCache]: Analyzing trace with hash 913753889, now seen corresponding path program 1 times [2024-11-17 03:30:45,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:30:45,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [384292874] [2024-11-17 03:30:45,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:45,354 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 [2024-11-17 03:30:45,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:30:45,355 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) [2024-11-17 03:30:45,355 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 [2024-11-17 03:30:46,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:30:46,105 INFO L255 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-17 03:30:46,108 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:30:46,111 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 [2024-11-17 03:30:46,176 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 [2024-11-17 03:30:46,238 INFO L349 Elim1Store]: treesize reduction 86, result has 31.2 percent of original size [2024-11-17 03:30:46,239 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 34 treesize of output 59 [2024-11-17 03:30:46,286 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 [2024-11-17 03:30:46,330 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 [2024-11-17 03:30:46,354 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 [2024-11-17 03:30:46,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 27 treesize of output 15 [2024-11-17 03:30:46,437 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:46,437 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:30:46,513 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_683 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_683) |c_~#c~0.base|) (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|))))))) is different from false [2024-11-17 03:30:50,832 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:30:50,832 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 [2024-11-17 03:30:50,845 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:30:50,845 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 [2024-11-17 03:30:50,852 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 [2024-11-17 03:30:51,725 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2024-11-17 03:30:51,726 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:30:51,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [384292874] [2024-11-17 03:30:51,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [384292874] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:30:51,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 03:30:51,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2024-11-17 03:30:51,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464911050] [2024-11-17 03:30:51,726 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 03:30:51,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-17 03:30:51,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:30:51,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-17 03:30:51,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=158, Unknown=15, NotChecked=26, Total=240 [2024-11-17 03:30:56,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-17 03:31:02,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-17 03:31:03,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-17 03:31:04,697 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 150 [2024-11-17 03:31:04,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 138 transitions, 554 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) [2024-11-17 03:31:04,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:31:04,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 150 [2024-11-17 03:31:04,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:31:10,029 INFO L124 PetriNetUnfolderBase]: 330/1098 cut-off events. [2024-11-17 03:31:10,029 INFO L125 PetriNetUnfolderBase]: For 278/278 co-relation queries the response was YES. [2024-11-17 03:31:10,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2139 conditions, 1098 events. 330/1098 cut-off events. For 278/278 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 7137 event pairs, 292 based on Foata normal form. 0/857 useless extension candidates. Maximal degree in co-relation 2039. Up to 679 conditions per place. [2024-11-17 03:31:10,036 INFO L140 encePairwiseOnDemand]: 142/150 looper letters, 78 selfloop transitions, 22 changer transitions 0/141 dead transitions. [2024-11-17 03:31:10,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 141 transitions, 762 flow [2024-11-17 03:31:10,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-17 03:31:10,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-17 03:31:10,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 536 transitions. [2024-11-17 03:31:10,039 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32484848484848483 [2024-11-17 03:31:10,039 INFO L175 Difference]: Start difference. First operand has 163 places, 138 transitions, 554 flow. Second operand 11 states and 536 transitions. [2024-11-17 03:31:10,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 141 transitions, 762 flow [2024-11-17 03:31:10,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 141 transitions, 709 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-11-17 03:31:10,042 INFO L231 Difference]: Finished difference. Result has 162 places, 137 transitions, 541 flow [2024-11-17 03:31:10,042 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=541, PETRI_PLACES=162, PETRI_TRANSITIONS=137} [2024-11-17 03:31:10,043 INFO L277 CegarLoopForPetriNet]: 128 programPoint places, 34 predicate places. [2024-11-17 03:31:10,044 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 137 transitions, 541 flow [2024-11-17 03:31:10,044 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) [2024-11-17 03:31:10,044 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:31:10,044 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 03:31:10,053 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2024-11-17 03:31:10,245 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 [2024-11-17 03:31:10,245 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-17 03:31:10,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:31:10,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1742881079, now seen corresponding path program 2 times [2024-11-17 03:31:10,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:31:10,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1483758275] [2024-11-17 03:31:10,246 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 03:31:10,246 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 [2024-11-17 03:31:10,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:31:10,247 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) [2024-11-17 03:31:10,248 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 [2024-11-17 03:31:10,990 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 03:31:10,990 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:31:11,005 INFO L255 TraceCheckSpWp]: Trace formula consists of 867 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 03:31:11,007 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:31:11,074 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 3 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:31:11,075 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:31:11,184 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 3 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:31:11,184 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:31:11,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1483758275] [2024-11-17 03:31:11,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1483758275] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:31:11,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 03:31:11,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2024-11-17 03:31:11,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697276562] [2024-11-17 03:31:11,185 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 03:31:11,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 03:31:11,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:31:11,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 03:31:11,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-11-17 03:31:11,191 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 150 [2024-11-17 03:31:11,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 137 transitions, 541 flow. Second operand has 12 states, 12 states have (on average 90.0) internal successors, (1080), 12 states have internal predecessors, (1080), 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) [2024-11-17 03:31:11,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:31:11,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 150 [2024-11-17 03:31:11,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:31:12,054 INFO L124 PetriNetUnfolderBase]: 123/804 cut-off events. [2024-11-17 03:31:12,054 INFO L125 PetriNetUnfolderBase]: For 811/811 co-relation queries the response was YES. [2024-11-17 03:31:12,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1670 conditions, 804 events. 123/804 cut-off events. For 811/811 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 3964 event pairs, 100 based on Foata normal form. 12/699 useless extension candidates. Maximal degree in co-relation 1585. Up to 259 conditions per place. [2024-11-17 03:31:12,058 INFO L140 encePairwiseOnDemand]: 146/150 looper letters, 94 selfloop transitions, 23 changer transitions 0/189 dead transitions. [2024-11-17 03:31:12,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 189 transitions, 1239 flow [2024-11-17 03:31:12,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-17 03:31:12,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-17 03:31:12,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1129 transitions. [2024-11-17 03:31:12,060 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6272222222222222 [2024-11-17 03:31:12,060 INFO L175 Difference]: Start difference. First operand has 162 places, 137 transitions, 541 flow. Second operand 12 states and 1129 transitions. [2024-11-17 03:31:12,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 189 transitions, 1239 flow [2024-11-17 03:31:12,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 189 transitions, 1096 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-11-17 03:31:12,065 INFO L231 Difference]: Finished difference. Result has 170 places, 150 transitions, 723 flow [2024-11-17 03:31:12,066 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=723, PETRI_PLACES=170, PETRI_TRANSITIONS=150} [2024-11-17 03:31:12,066 INFO L277 CegarLoopForPetriNet]: 128 programPoint places, 42 predicate places. [2024-11-17 03:31:12,066 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 150 transitions, 723 flow [2024-11-17 03:31:12,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 90.0) internal successors, (1080), 12 states have internal predecessors, (1080), 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) [2024-11-17 03:31:12,067 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:31:12,067 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 03:31:12,080 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 (18)] Forceful destruction successful, exit code 0 [2024-11-17 03:31:12,267 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 [2024-11-17 03:31:12,268 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-17 03:31:12,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:31:12,268 INFO L85 PathProgramCache]: Analyzing trace with hash 914712473, now seen corresponding path program 3 times [2024-11-17 03:31:12,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:31:12,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1178025846] [2024-11-17 03:31:12,270 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-17 03:31:12,270 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 [2024-11-17 03:31:12,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:31:12,272 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) [2024-11-17 03:31:12,273 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 [2024-11-17 03:31:27,740 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-17 03:31:27,741 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:31:27,804 INFO L255 TraceCheckSpWp]: Trace formula consists of 1677 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-17 03:31:27,807 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:31:27,967 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 3 proven. 470 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:31:27,968 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:31:28,300 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 3 proven. 470 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:31:28,300 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:31:28,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1178025846] [2024-11-17 03:31:28,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1178025846] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:31:28,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 03:31:28,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2024-11-17 03:31:28,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139090428] [2024-11-17 03:31:28,301 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 03:31:28,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-17 03:31:28,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:31:28,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-17 03:31:28,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2024-11-17 03:31:28,306 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 150 [2024-11-17 03:31:28,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 150 transitions, 723 flow. Second operand has 24 states, 24 states have (on average 90.5) internal successors, (2172), 24 states have internal predecessors, (2172), 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) [2024-11-17 03:31:28,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:31:28,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 150 [2024-11-17 03:31:28,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:31:30,526 INFO L124 PetriNetUnfolderBase]: 123/1068 cut-off events. [2024-11-17 03:31:30,527 INFO L125 PetriNetUnfolderBase]: For 2993/2993 co-relation queries the response was YES. [2024-11-17 03:31:30,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2457 conditions, 1068 events. 123/1068 cut-off events. For 2993/2993 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 3975 event pairs, 100 based on Foata normal form. 24/975 useless extension candidates. Maximal degree in co-relation 2369. Up to 259 conditions per place. [2024-11-17 03:31:30,530 INFO L140 encePairwiseOnDemand]: 146/150 looper letters, 154 selfloop transitions, 47 changer transitions 0/273 dead transitions. [2024-11-17 03:31:30,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 273 transitions, 2132 flow [2024-11-17 03:31:30,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-17 03:31:30,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-17 03:31:30,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2227 transitions. [2024-11-17 03:31:30,538 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6186111111111111 [2024-11-17 03:31:30,539 INFO L175 Difference]: Start difference. First operand has 170 places, 150 transitions, 723 flow. Second operand 24 states and 2227 transitions. [2024-11-17 03:31:30,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 273 transitions, 2132 flow [2024-11-17 03:31:30,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 273 transitions, 2120 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 03:31:30,546 INFO L231 Difference]: Finished difference. Result has 203 places, 175 transitions, 1256 flow [2024-11-17 03:31:30,546 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1256, PETRI_PLACES=203, PETRI_TRANSITIONS=175} [2024-11-17 03:31:30,546 INFO L277 CegarLoopForPetriNet]: 128 programPoint places, 75 predicate places. [2024-11-17 03:31:30,546 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 175 transitions, 1256 flow [2024-11-17 03:31:30,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 90.5) internal successors, (2172), 24 states have internal predecessors, (2172), 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) [2024-11-17 03:31:30,547 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:31:30,548 INFO L204 CegarLoopForPetriNet]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 03:31:30,591 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 [2024-11-17 03:31:30,748 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 [2024-11-17 03:31:30,748 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-17 03:31:30,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:31:30,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1169393501, now seen corresponding path program 4 times [2024-11-17 03:31:30,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:31:30,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [896877944] [2024-11-17 03:31:30,750 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-17 03:31:30,750 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 [2024-11-17 03:31:30,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:31:30,751 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) [2024-11-17 03:31:30,752 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