./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cc67bee348fb2ffff05c0616660a93fb872177c05d08813d910a29641aea282e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:59:23,084 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:59:23,168 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 19:59:23,173 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:59:23,176 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:59:23,201 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:59:23,201 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:59:23,202 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:59:23,202 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:59:23,203 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:59:23,203 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:59:23,203 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:59:23,205 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:59:23,205 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:59:23,207 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:59:23,207 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:59:23,208 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:59:23,208 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:59:23,208 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:59:23,209 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:59:23,209 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:59:23,213 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:59:23,213 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:59:23,214 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:59:23,214 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:59:23,214 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:59:23,214 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:59:23,215 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:59:23,215 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:59:23,215 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:59:23,215 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:59:23,216 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:59:23,216 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:59:23,216 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:59:23,216 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:59:23,216 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:59:23,217 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 19:59:23,217 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 19:59:23,217 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:59:23,217 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:59:23,218 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:59:23,219 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:59:23,219 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc67bee348fb2ffff05c0616660a93fb872177c05d08813d910a29641aea282e [2024-10-11 19:59:23,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:59:23,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:59:23,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:59:23,507 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:59:23,507 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:59:23,508 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c [2024-10-11 19:59:25,080 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:59:25,258 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:59:25,259 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c [2024-10-11 19:59:25,267 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/f799644fe/ddfb722883434b07a9c290654e5a0941/FLAG5ca975ced [2024-10-11 19:59:25,280 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/f799644fe/ddfb722883434b07a9c290654e5a0941 [2024-10-11 19:59:25,283 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:59:25,284 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:59:25,285 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:59:25,285 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:59:25,292 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:59:25,293 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:59:25" (1/1) ... [2024-10-11 19:59:25,294 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7100b3cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:25, skipping insertion in model container [2024-10-11 19:59:25,294 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:59:25" (1/1) ... [2024-10-11 19:59:25,315 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:59:25,548 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:59:25,561 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-10-11 19:59:25,562 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1a312d88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:25, skipping insertion in model container [2024-10-11 19:59:25,562 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:59:25,563 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-11 19:59:25,565 INFO L158 Benchmark]: Toolchain (without parser) took 280.07ms. Allocated memory is still 159.4MB. Free memory was 90.0MB in the beginning and 78.3MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-11 19:59:25,566 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 117.4MB. Free memory is still 78.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 19:59:25,566 INFO L158 Benchmark]: CACSL2BoogieTranslator took 277.98ms. Allocated memory is still 159.4MB. Free memory was 89.8MB in the beginning and 78.3MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-11 19:59:25,567 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 117.4MB. Free memory is still 78.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 277.98ms. Allocated memory is still 159.4MB. Free memory was 89.8MB in the beginning and 78.3MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 101]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cc67bee348fb2ffff05c0616660a93fb872177c05d08813d910a29641aea282e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:59:27,709 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:59:27,789 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-11 19:59:27,796 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:59:27,798 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:59:27,829 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:59:27,831 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:59:27,832 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:59:27,832 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:59:27,833 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:59:27,833 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:59:27,834 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:59:27,834 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:59:27,836 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:59:27,837 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:59:27,837 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:59:27,837 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:59:27,837 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:59:27,838 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:59:27,838 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:59:27,838 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:59:27,842 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:59:27,842 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:59:27,843 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:59:27,843 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:59:27,843 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-11 19:59:27,843 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:59:27,843 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-11 19:59:27,844 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:59:27,844 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:59:27,844 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:59:27,844 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:59:27,844 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:59:27,844 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:59:27,845 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:59:27,845 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:59:27,846 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:59:27,846 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:59:27,847 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-11 19:59:27,848 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-11 19:59:27,848 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:59:27,848 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:59:27,849 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:59:27,849 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:59:27,849 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-11 19:59:27,849 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc67bee348fb2ffff05c0616660a93fb872177c05d08813d910a29641aea282e [2024-10-11 19:59:28,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:59:28,221 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:59:28,225 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:59:28,227 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:59:28,227 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:59:28,230 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c [2024-10-11 19:59:29,793 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:59:29,987 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:59:29,988 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c [2024-10-11 19:59:30,000 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/b8b1f7a98/eedb2a0fedf7432eb2c364ae8decc07e/FLAG8ec31f07c [2024-10-11 19:59:30,362 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/b8b1f7a98/eedb2a0fedf7432eb2c364ae8decc07e [2024-10-11 19:59:30,364 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:59:30,365 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:59:30,366 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:59:30,366 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:59:30,372 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:59:30,373 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:59:30" (1/1) ... [2024-10-11 19:59:30,374 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7771dbb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:30, skipping insertion in model container [2024-10-11 19:59:30,374 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:59:30" (1/1) ... [2024-10-11 19:59:30,401 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:59:30,658 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:59:30,675 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-11 19:59:30,679 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:59:30,704 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:59:30,710 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 19:59:30,736 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:59:30,754 INFO L204 MainTranslator]: Completed translation [2024-10-11 19:59:30,755 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:30 WrapperNode [2024-10-11 19:59:30,755 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:59:30,756 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 19:59:30,756 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 19:59:30,756 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 19:59:30,762 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:30" (1/1) ... [2024-10-11 19:59:30,772 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:30" (1/1) ... [2024-10-11 19:59:30,811 INFO L138 Inliner]: procedures = 26, calls = 32, calls flagged for inlining = 14, calls inlined = 20, statements flattened = 211 [2024-10-11 19:59:30,811 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 19:59:30,812 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 19:59:30,812 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 19:59:30,812 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 19:59:30,824 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:30" (1/1) ... [2024-10-11 19:59:30,825 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:30" (1/1) ... [2024-10-11 19:59:30,835 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:30" (1/1) ... [2024-10-11 19:59:30,867 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-11 19:59:30,868 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:30" (1/1) ... [2024-10-11 19:59:30,868 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:30" (1/1) ... [2024-10-11 19:59:30,878 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:30" (1/1) ... [2024-10-11 19:59:30,882 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:30" (1/1) ... [2024-10-11 19:59:30,886 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:30" (1/1) ... [2024-10-11 19:59:30,887 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:30" (1/1) ... [2024-10-11 19:59:30,898 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 19:59:30,899 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 19:59:30,899 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 19:59:30,899 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 19:59:30,900 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:30" (1/1) ... [2024-10-11 19:59:30,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:59:30,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:59:30,931 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 19:59:30,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 19:59:30,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 19:59:30,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-11 19:59:30,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-11 19:59:30,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-11 19:59:30,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-11 19:59:30,980 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 19:59:30,980 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 19:59:30,981 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 19:59:30,981 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 19:59:30,981 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-11 19:59:30,981 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-11 19:59:30,981 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 19:59:30,981 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 19:59:30,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 19:59:30,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 19:59:30,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 19:59:30,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-11 19:59:30,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-11 19:59:30,983 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 19:59:31,110 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 19:59:31,113 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 19:59:31,737 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 19:59:31,739 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 19:59:32,161 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 19:59:32,161 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-11 19:59:32,162 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:59:32 BoogieIcfgContainer [2024-10-11 19:59:32,162 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 19:59:32,164 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 19:59:32,165 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 19:59:32,169 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 19:59:32,169 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:59:30" (1/3) ... [2024-10-11 19:59:32,170 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@761ce6e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:59:32, skipping insertion in model container [2024-10-11 19:59:32,170 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:30" (2/3) ... [2024-10-11 19:59:32,172 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@761ce6e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:59:32, skipping insertion in model container [2024-10-11 19:59:32,172 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:59:32" (3/3) ... [2024-10-11 19:59:32,174 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-mts.wvr.c [2024-10-11 19:59:32,194 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 19:59:32,194 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2024-10-11 19:59:32,194 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 19:59:32,302 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-11 19:59:32,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 58 transitions, 137 flow [2024-10-11 19:59:32,375 INFO L124 PetriNetUnfolderBase]: 6/55 cut-off events. [2024-10-11 19:59:32,375 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-11 19:59:32,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 55 events. 6/55 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 148 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2024-10-11 19:59:32,380 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 58 transitions, 137 flow [2024-10-11 19:59:32,384 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 54 transitions, 126 flow [2024-10-11 19:59:32,398 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:59:32,406 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;@3d672b98, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:59:32,407 INFO L334 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2024-10-11 19:59:32,410 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:59:32,412 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-11 19:59:32,412 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:59:32,412 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:32,413 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:59:32,414 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-10-11 19:59:32,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:32,419 INFO L85 PathProgramCache]: Analyzing trace with hash 709843, now seen corresponding path program 1 times [2024-10-11 19:59:32,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:59:32,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1505371994] [2024-10-11 19:59:32,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:59:32,434 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:59:32,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:59:32,437 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:59:32,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-11 19:59:32,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:59:32,525 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 19:59:32,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:32,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 19:59:32,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:59:32,608 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:59:32,608 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:32,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1505371994] [2024-10-11 19:59:32,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1505371994] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:59:32,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:59:32,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 19:59:32,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250715040] [2024-10-11 19:59:32,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:59:32,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:59:32,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:32,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:59:32,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:59:32,680 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-10-11 19:59:32,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:32,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:32,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-10-11 19:59:32,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:33,149 INFO L124 PetriNetUnfolderBase]: 1076/1573 cut-off events. [2024-10-11 19:59:33,149 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2024-10-11 19:59:33,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3154 conditions, 1573 events. 1076/1573 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 6790 event pairs, 723 based on Foata normal form. 1/1429 useless extension candidates. Maximal degree in co-relation 2878. Up to 1475 conditions per place. [2024-10-11 19:59:33,167 INFO L140 encePairwiseOnDemand]: 50/58 looper letters, 30 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2024-10-11 19:59:33,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 47 transitions, 176 flow [2024-10-11 19:59:33,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:59:33,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:59:33,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-10-11 19:59:33,182 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5459770114942529 [2024-10-11 19:59:33,184 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 126 flow. Second operand 3 states and 95 transitions. [2024-10-11 19:59:33,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 47 transitions, 176 flow [2024-10-11 19:59:33,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 47 transitions, 164 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-11 19:59:33,194 INFO L231 Difference]: Finished difference. Result has 47 places, 47 transitions, 104 flow [2024-10-11 19:59:33,197 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=47, PETRI_TRANSITIONS=47} [2024-10-11 19:59:33,201 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -11 predicate places. [2024-10-11 19:59:33,203 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 47 transitions, 104 flow [2024-10-11 19:59:33,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:33,203 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:33,204 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:59:33,206 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-10-11 19:59:33,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:59:33,405 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-10-11 19:59:33,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:33,406 INFO L85 PathProgramCache]: Analyzing trace with hash 709844, now seen corresponding path program 1 times [2024-10-11 19:59:33,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:59:33,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2050389439] [2024-10-11 19:59:33,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:59:33,407 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:59:33,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:59:33,426 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:59:33,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-11 19:59:33,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:59:33,485 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 19:59:33,487 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:33,510 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 8 treesize of output 7 [2024-10-11 19:59:33,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:59:33,589 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:59:33,589 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:33,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2050389439] [2024-10-11 19:59:33,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2050389439] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:59:33,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:59:33,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:59:33,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212929113] [2024-10-11 19:59:33,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:59:33,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:59:33,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:33,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:59:33,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:59:33,664 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-10-11 19:59:33,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 47 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:33,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:33,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-10-11 19:59:33,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:34,111 INFO L124 PetriNetUnfolderBase]: 1077/1576 cut-off events. [2024-10-11 19:59:34,112 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-10-11 19:59:34,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3094 conditions, 1576 events. 1077/1576 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 6791 event pairs, 723 based on Foata normal form. 0/1431 useless extension candidates. Maximal degree in co-relation 3072. Up to 1480 conditions per place. [2024-10-11 19:59:34,125 INFO L140 encePairwiseOnDemand]: 53/58 looper letters, 32 selfloop transitions, 4 changer transitions 0/50 dead transitions. [2024-10-11 19:59:34,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 50 transitions, 184 flow [2024-10-11 19:59:34,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:59:34,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:59:34,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-10-11 19:59:34,130 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4870689655172414 [2024-10-11 19:59:34,130 INFO L175 Difference]: Start difference. First operand has 47 places, 47 transitions, 104 flow. Second operand 4 states and 113 transitions. [2024-10-11 19:59:34,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 50 transitions, 184 flow [2024-10-11 19:59:34,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 50 transitions, 178 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:59:34,134 INFO L231 Difference]: Finished difference. Result has 50 places, 50 transitions, 127 flow [2024-10-11 19:59:34,135 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=127, PETRI_PLACES=50, PETRI_TRANSITIONS=50} [2024-10-11 19:59:34,136 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -8 predicate places. [2024-10-11 19:59:34,137 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 50 transitions, 127 flow [2024-10-11 19:59:34,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:34,137 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:34,137 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-11 19:59:34,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-10-11 19:59:34,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:59:34,340 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-10-11 19:59:34,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:34,341 INFO L85 PathProgramCache]: Analyzing trace with hash 682182813, now seen corresponding path program 1 times [2024-10-11 19:59:34,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:59:34,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [94532067] [2024-10-11 19:59:34,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:59:34,342 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:59:34,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:59:34,345 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:59:34,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-11 19:59:34,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:59:34,416 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 19:59:34,418 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:34,431 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 8 treesize of output 7 [2024-10-11 19:59:34,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:59:34,614 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:59:34,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:59:34,904 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:34,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [94532067] [2024-10-11 19:59:34,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [94532067] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:59:34,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:59:34,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-11 19:59:34,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264888936] [2024-10-11 19:59:34,905 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:59:34,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 19:59:34,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:34,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 19:59:34,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-11 19:59:35,282 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-10-11 19:59:35,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 50 transitions, 127 flow. Second operand has 10 states, 10 states have (on average 20.0) internal successors, (200), 10 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:35,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:35,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-10-11 19:59:35,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:36,087 INFO L124 PetriNetUnfolderBase]: 1080/1585 cut-off events. [2024-10-11 19:59:36,087 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-10-11 19:59:36,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3131 conditions, 1585 events. 1080/1585 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 6851 event pairs, 723 based on Foata normal form. 0/1436 useless extension candidates. Maximal degree in co-relation 3079. Up to 1483 conditions per place. [2024-10-11 19:59:36,098 INFO L140 encePairwiseOnDemand]: 53/58 looper letters, 32 selfloop transitions, 13 changer transitions 0/59 dead transitions. [2024-10-11 19:59:36,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 59 transitions, 253 flow [2024-10-11 19:59:36,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 19:59:36,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 19:59:36,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 238 transitions. [2024-10-11 19:59:36,102 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4103448275862069 [2024-10-11 19:59:36,102 INFO L175 Difference]: Start difference. First operand has 50 places, 50 transitions, 127 flow. Second operand 10 states and 238 transitions. [2024-10-11 19:59:36,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 59 transitions, 253 flow [2024-10-11 19:59:36,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 59 transitions, 250 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:59:36,104 INFO L231 Difference]: Finished difference. Result has 61 places, 59 transitions, 204 flow [2024-10-11 19:59:36,105 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=204, PETRI_PLACES=61, PETRI_TRANSITIONS=59} [2024-10-11 19:59:36,105 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 3 predicate places. [2024-10-11 19:59:36,105 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 59 transitions, 204 flow [2024-10-11 19:59:36,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.0) internal successors, (200), 10 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:36,106 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:36,106 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-11 19:59:36,110 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-10-11 19:59:36,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:59:36,310 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-10-11 19:59:36,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:36,310 INFO L85 PathProgramCache]: Analyzing trace with hash -324088423, now seen corresponding path program 1 times [2024-10-11 19:59:36,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:59:36,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [271910774] [2024-10-11 19:59:36,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:59:36,311 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:59:36,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:59:36,314 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:59:36,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-11 19:59:36,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:59:36,373 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 19:59:36,374 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:36,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 19:59:36,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:59:36,403 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:59:36,403 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:36,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [271910774] [2024-10-11 19:59:36,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [271910774] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:59:36,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:59:36,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:59:36,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381445954] [2024-10-11 19:59:36,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:59:36,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:59:36,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:36,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:59:36,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:59:36,453 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 58 [2024-10-11 19:59:36,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 204 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:36,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:36,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 58 [2024-10-11 19:59:36,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:36,713 INFO L124 PetriNetUnfolderBase]: 923/1354 cut-off events. [2024-10-11 19:59:36,713 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-10-11 19:59:36,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2709 conditions, 1354 events. 923/1354 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 5601 event pairs, 608 based on Foata normal form. 0/1283 useless extension candidates. Maximal degree in co-relation 2675. Up to 1265 conditions per place. [2024-10-11 19:59:36,721 INFO L140 encePairwiseOnDemand]: 51/58 looper letters, 37 selfloop transitions, 6 changer transitions 0/54 dead transitions. [2024-10-11 19:59:36,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 54 transitions, 280 flow [2024-10-11 19:59:36,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:59:36,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:59:36,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-10-11 19:59:36,724 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41379310344827586 [2024-10-11 19:59:36,724 INFO L175 Difference]: Start difference. First operand has 61 places, 59 transitions, 204 flow. Second operand 4 states and 96 transitions. [2024-10-11 19:59:36,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 54 transitions, 280 flow [2024-10-11 19:59:36,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 54 transitions, 250 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-10-11 19:59:36,727 INFO L231 Difference]: Finished difference. Result has 56 places, 54 transitions, 176 flow [2024-10-11 19:59:36,727 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=176, PETRI_PLACES=56, PETRI_TRANSITIONS=54} [2024-10-11 19:59:36,728 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -2 predicate places. [2024-10-11 19:59:36,728 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 54 transitions, 176 flow [2024-10-11 19:59:36,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:36,728 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:36,728 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-11 19:59:36,733 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-10-11 19:59:36,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:59:36,929 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-10-11 19:59:36,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:36,930 INFO L85 PathProgramCache]: Analyzing trace with hash -324088422, now seen corresponding path program 1 times [2024-10-11 19:59:36,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:59:36,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [156639489] [2024-10-11 19:59:36,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:59:36,930 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:59:36,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:59:36,932 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:59:36,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-10-11 19:59:36,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:59:36,998 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 19:59:36,999 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:37,018 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 8 treesize of output 7 [2024-10-11 19:59:37,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:59:37,160 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:59:37,160 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:37,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [156639489] [2024-10-11 19:59:37,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [156639489] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:59:37,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:59:37,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:59:37,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249696139] [2024-10-11 19:59:37,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:59:37,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:59:37,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:37,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:59:37,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:59:37,276 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 58 [2024-10-11 19:59:37,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 54 transitions, 176 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:37,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:37,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 58 [2024-10-11 19:59:37,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:37,816 INFO L124 PetriNetUnfolderBase]: 1842/2721 cut-off events. [2024-10-11 19:59:37,816 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-11 19:59:37,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5326 conditions, 2721 events. 1842/2721 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 13123 event pairs, 721 based on Foata normal form. 0/2482 useless extension candidates. Maximal degree in co-relation 5295. Up to 1769 conditions per place. [2024-10-11 19:59:37,834 INFO L140 encePairwiseOnDemand]: 51/58 looper letters, 57 selfloop transitions, 9 changer transitions 0/75 dead transitions. [2024-10-11 19:59:37,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 75 transitions, 352 flow [2024-10-11 19:59:37,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:59:37,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:59:37,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 146 transitions. [2024-10-11 19:59:37,836 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.503448275862069 [2024-10-11 19:59:37,836 INFO L175 Difference]: Start difference. First operand has 56 places, 54 transitions, 176 flow. Second operand 5 states and 146 transitions. [2024-10-11 19:59:37,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 75 transitions, 352 flow [2024-10-11 19:59:37,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 75 transitions, 345 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:59:37,839 INFO L231 Difference]: Finished difference. Result has 59 places, 56 transitions, 202 flow [2024-10-11 19:59:37,839 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=202, PETRI_PLACES=59, PETRI_TRANSITIONS=56} [2024-10-11 19:59:37,840 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 1 predicate places. [2024-10-11 19:59:37,840 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 56 transitions, 202 flow [2024-10-11 19:59:37,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:37,840 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:37,840 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:59:37,845 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-10-11 19:59:38,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:59:38,044 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-10-11 19:59:38,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:38,045 INFO L85 PathProgramCache]: Analyzing trace with hash 2074673395, now seen corresponding path program 1 times [2024-10-11 19:59:38,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:59:38,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [614346253] [2024-10-11 19:59:38,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:59:38,046 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:59:38,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:59:38,047 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:59:38,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-10-11 19:59:38,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:59:38,102 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 19:59:38,103 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:38,119 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 8 treesize of output 7 [2024-10-11 19:59:38,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:59:38,313 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:59:38,313 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:38,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [614346253] [2024-10-11 19:59:38,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [614346253] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:59:38,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:59:38,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:59:38,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478602368] [2024-10-11 19:59:38,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:59:38,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:59:38,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:38,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:59:38,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:59:38,484 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 58 [2024-10-11 19:59:38,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 56 transitions, 202 flow. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:38,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:38,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 58 [2024-10-11 19:59:38,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:39,228 INFO L124 PetriNetUnfolderBase]: 3116/4554 cut-off events. [2024-10-11 19:59:39,228 INFO L125 PetriNetUnfolderBase]: For 847/931 co-relation queries the response was YES. [2024-10-11 19:59:39,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9742 conditions, 4554 events. 3116/4554 cut-off events. For 847/931 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 22575 event pairs, 1271 based on Foata normal form. 0/4167 useless extension candidates. Maximal degree in co-relation 9709. Up to 2911 conditions per place. [2024-10-11 19:59:39,260 INFO L140 encePairwiseOnDemand]: 51/58 looper letters, 60 selfloop transitions, 9 changer transitions 0/78 dead transitions. [2024-10-11 19:59:39,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 78 transitions, 399 flow [2024-10-11 19:59:39,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:59:39,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:59:39,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 145 transitions. [2024-10-11 19:59:39,262 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-11 19:59:39,262 INFO L175 Difference]: Start difference. First operand has 59 places, 56 transitions, 202 flow. Second operand 5 states and 145 transitions. [2024-10-11 19:59:39,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 78 transitions, 399 flow [2024-10-11 19:59:39,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 78 transitions, 381 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 19:59:39,265 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 220 flow [2024-10-11 19:59:39,265 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=220, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2024-10-11 19:59:39,266 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 3 predicate places. [2024-10-11 19:59:39,266 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 220 flow [2024-10-11 19:59:39,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:39,267 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:39,267 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:59:39,275 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-10-11 19:59:39,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:59:39,468 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-10-11 19:59:39,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:39,468 INFO L85 PathProgramCache]: Analyzing trace with hash 945751202, now seen corresponding path program 1 times [2024-10-11 19:59:39,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:59:39,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1633046193] [2024-10-11 19:59:39,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:59:39,469 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:59:39,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:59:39,470 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:59:39,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-10-11 19:59:39,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:59:39,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 19:59:39,543 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:39,551 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 8 treesize of output 7 [2024-10-11 19:59:39,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:59:39,708 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:59:39,708 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:39,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1633046193] [2024-10-11 19:59:39,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1633046193] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:59:39,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:59:39,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 19:59:39,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146109633] [2024-10-11 19:59:39,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:59:39,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:59:39,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:39,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:59:39,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:59:39,846 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 58 [2024-10-11 19:59:39,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 220 flow. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:39,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:39,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 58 [2024-10-11 19:59:39,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:40,568 INFO L124 PetriNetUnfolderBase]: 2722/4238 cut-off events. [2024-10-11 19:59:40,569 INFO L125 PetriNetUnfolderBase]: For 1091/1164 co-relation queries the response was YES. [2024-10-11 19:59:40,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9632 conditions, 4238 events. 2722/4238 cut-off events. For 1091/1164 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 22292 event pairs, 1717 based on Foata normal form. 64/4159 useless extension candidates. Maximal degree in co-relation 9598. Up to 3400 conditions per place. [2024-10-11 19:59:40,599 INFO L140 encePairwiseOnDemand]: 50/58 looper letters, 69 selfloop transitions, 5 changer transitions 0/85 dead transitions. [2024-10-11 19:59:40,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 85 transitions, 446 flow [2024-10-11 19:59:40,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:59:40,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:59:40,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 166 transitions. [2024-10-11 19:59:40,601 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5724137931034483 [2024-10-11 19:59:40,601 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 220 flow. Second operand 5 states and 166 transitions. [2024-10-11 19:59:40,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 85 transitions, 446 flow [2024-10-11 19:59:40,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 85 transitions, 427 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 19:59:40,608 INFO L231 Difference]: Finished difference. Result has 64 places, 60 transitions, 242 flow [2024-10-11 19:59:40,609 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=242, PETRI_PLACES=64, PETRI_TRANSITIONS=60} [2024-10-11 19:59:40,610 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 6 predicate places. [2024-10-11 19:59:40,610 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 60 transitions, 242 flow [2024-10-11 19:59:40,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:40,610 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:40,611 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:59:40,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2024-10-11 19:59:40,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:59:40,812 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-10-11 19:59:40,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:40,812 INFO L85 PathProgramCache]: Analyzing trace with hash 861006720, now seen corresponding path program 1 times [2024-10-11 19:59:40,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:59:40,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [11299125] [2024-10-11 19:59:40,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:59:40,813 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:59:40,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:59:40,816 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:59:40,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-10-11 19:59:40,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:59:40,877 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 19:59:40,878 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:40,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:59:40,898 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:59:40,898 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:40,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [11299125] [2024-10-11 19:59:40,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [11299125] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:59:40,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:59:40,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:59:40,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271537967] [2024-10-11 19:59:40,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:59:40,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:59:40,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:40,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:59:40,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:59:40,913 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 58 [2024-10-11 19:59:40,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 60 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:40,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:40,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 58 [2024-10-11 19:59:40,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:41,366 INFO L124 PetriNetUnfolderBase]: 2559/4007 cut-off events. [2024-10-11 19:59:41,367 INFO L125 PetriNetUnfolderBase]: For 2026/2064 co-relation queries the response was YES. [2024-10-11 19:59:41,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9864 conditions, 4007 events. 2559/4007 cut-off events. For 2026/2064 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 21842 event pairs, 1622 based on Foata normal form. 1/3960 useless extension candidates. Maximal degree in co-relation 9840. Up to 3400 conditions per place. [2024-10-11 19:59:41,391 INFO L140 encePairwiseOnDemand]: 55/58 looper letters, 44 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2024-10-11 19:59:41,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 57 transitions, 310 flow [2024-10-11 19:59:41,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:59:41,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:59:41,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-10-11 19:59:41,394 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5402298850574713 [2024-10-11 19:59:41,394 INFO L175 Difference]: Start difference. First operand has 64 places, 60 transitions, 242 flow. Second operand 3 states and 94 transitions. [2024-10-11 19:59:41,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 57 transitions, 310 flow [2024-10-11 19:59:41,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 57 transitions, 306 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:59:41,400 INFO L231 Difference]: Finished difference. Result has 62 places, 57 transitions, 218 flow [2024-10-11 19:59:41,400 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=62, PETRI_TRANSITIONS=57} [2024-10-11 19:59:41,401 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 4 predicate places. [2024-10-11 19:59:41,402 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 57 transitions, 218 flow [2024-10-11 19:59:41,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:41,403 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:41,404 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-11 19:59:41,410 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-10-11 19:59:41,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:59:41,605 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-10-11 19:59:41,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:41,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1547177592, now seen corresponding path program 2 times [2024-10-11 19:59:41,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:59:41,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1285251189] [2024-10-11 19:59:41,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:59:41,606 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:59:41,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:59:41,608 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:59:41,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-10-11 19:59:41,677 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:59:41,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:59:41,679 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 19:59:41,680 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:41,694 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 8 treesize of output 7 [2024-10-11 19:59:41,921 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:59:41,921 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:59:42,495 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:59:42,496 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:42,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1285251189] [2024-10-11 19:59:42,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1285251189] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:59:42,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:59:42,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-11 19:59:42,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666308183] [2024-10-11 19:59:42,496 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:59:42,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 19:59:42,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:42,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 19:59:42,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-11 19:59:42,930 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-10-11 19:59:42,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 57 transitions, 218 flow. Second operand has 14 states, 14 states have (on average 20.571428571428573) internal successors, (288), 14 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:42,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:42,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-10-11 19:59:42,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:45,688 INFO L124 PetriNetUnfolderBase]: 2565/4025 cut-off events. [2024-10-11 19:59:45,688 INFO L125 PetriNetUnfolderBase]: For 2062/2100 co-relation queries the response was YES. [2024-10-11 19:59:45,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9931 conditions, 4025 events. 2565/4025 cut-off events. For 2062/2100 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 22040 event pairs, 1622 based on Foata normal form. 6/3977 useless extension candidates. Maximal degree in co-relation 9907. Up to 3401 conditions per place. [2024-10-11 19:59:45,714 INFO L140 encePairwiseOnDemand]: 53/58 looper letters, 35 selfloop transitions, 30 changer transitions 0/75 dead transitions. [2024-10-11 19:59:45,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 75 transitions, 438 flow [2024-10-11 19:59:45,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-11 19:59:45,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-11 19:59:45,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 485 transitions. [2024-10-11 19:59:45,720 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38009404388714735 [2024-10-11 19:59:45,720 INFO L175 Difference]: Start difference. First operand has 62 places, 57 transitions, 218 flow. Second operand 22 states and 485 transitions. [2024-10-11 19:59:45,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 75 transitions, 438 flow [2024-10-11 19:59:45,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 75 transitions, 434 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:59:45,725 INFO L231 Difference]: Finished difference. Result has 87 places, 75 transitions, 394 flow [2024-10-11 19:59:45,726 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=394, PETRI_PLACES=87, PETRI_TRANSITIONS=75} [2024-10-11 19:59:45,727 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 29 predicate places. [2024-10-11 19:59:45,728 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 75 transitions, 394 flow [2024-10-11 19:59:45,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 20.571428571428573) internal successors, (288), 14 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:45,729 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:45,729 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:59:45,738 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-10-11 19:59:45,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:59:45,929 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-10-11 19:59:45,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:45,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1944605591, now seen corresponding path program 1 times [2024-10-11 19:59:45,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:59:45,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1800485371] [2024-10-11 19:59:45,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:59:45,930 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:59:45,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:59:45,933 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:59:45,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-10-11 19:59:46,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:59:46,003 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-11 19:59:46,004 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:46,019 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 8 treesize of output 7 [2024-10-11 19:59:46,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:59:46,287 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:59:46,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:59:46,816 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:46,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1800485371] [2024-10-11 19:59:46,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1800485371] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:59:46,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:59:46,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2024-10-11 19:59:46,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354439007] [2024-10-11 19:59:46,817 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:59:46,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 19:59:46,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:46,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 19:59:46,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-10-11 19:59:47,991 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-10-11 19:59:47,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 75 transitions, 394 flow. Second operand has 12 states, 12 states have (on average 20.833333333333332) internal successors, (250), 12 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:47,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:47,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-10-11 19:59:47,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:50,934 INFO L124 PetriNetUnfolderBase]: 9554/14249 cut-off events. [2024-10-11 19:59:50,934 INFO L125 PetriNetUnfolderBase]: For 8249/8587 co-relation queries the response was YES. [2024-10-11 19:59:50,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35715 conditions, 14249 events. 9554/14249 cut-off events. For 8249/8587 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 85948 event pairs, 3954 based on Foata normal form. 274/14471 useless extension candidates. Maximal degree in co-relation 35661. Up to 2829 conditions per place. [2024-10-11 19:59:51,043 INFO L140 encePairwiseOnDemand]: 49/58 looper letters, 195 selfloop transitions, 34 changer transitions 0/239 dead transitions. [2024-10-11 19:59:51,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 239 transitions, 1429 flow [2024-10-11 19:59:51,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 19:59:51,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-11 19:59:51,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 446 transitions. [2024-10-11 19:59:51,047 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5492610837438424 [2024-10-11 19:59:51,047 INFO L175 Difference]: Start difference. First operand has 87 places, 75 transitions, 394 flow. Second operand 14 states and 446 transitions. [2024-10-11 19:59:51,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 239 transitions, 1429 flow [2024-10-11 19:59:51,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 239 transitions, 1351 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-10-11 19:59:51,055 INFO L231 Difference]: Finished difference. Result has 93 places, 86 transitions, 443 flow [2024-10-11 19:59:51,055 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=443, PETRI_PLACES=93, PETRI_TRANSITIONS=86} [2024-10-11 19:59:51,056 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 35 predicate places. [2024-10-11 19:59:51,056 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 86 transitions, 443 flow [2024-10-11 19:59:51,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 20.833333333333332) internal successors, (250), 12 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:51,057 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:51,057 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:59:51,064 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2024-10-11 19:59:51,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:59:51,258 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-10-11 19:59:51,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:51,258 INFO L85 PathProgramCache]: Analyzing trace with hash 2029350073, now seen corresponding path program 1 times [2024-10-11 19:59:51,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:59:51,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1421868293] [2024-10-11 19:59:51,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:59:51,259 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:59:51,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:59:51,260 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:59:51,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-10-11 19:59:51,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:59:51,328 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 19:59:51,329 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:51,338 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 8 treesize of output 7 [2024-10-11 19:59:51,569 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:59:51,570 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:59:51,853 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:59:51,854 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:51,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1421868293] [2024-10-11 19:59:51,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1421868293] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:59:51,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:59:51,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2024-10-11 19:59:51,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003460505] [2024-10-11 19:59:51,854 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:59:51,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 19:59:51,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:51,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 19:59:51,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-10-11 19:59:52,346 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 58 [2024-10-11 19:59:52,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 86 transitions, 443 flow. Second operand has 12 states, 12 states have (on average 19.0) internal successors, (228), 12 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:52,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:52,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 58 [2024-10-11 19:59:52,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:57,484 INFO L124 PetriNetUnfolderBase]: 25157/35669 cut-off events. [2024-10-11 19:59:57,485 INFO L125 PetriNetUnfolderBase]: For 34937/35713 co-relation queries the response was YES. [2024-10-11 19:59:57,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99687 conditions, 35669 events. 25157/35669 cut-off events. For 34937/35713 co-relation queries the response was YES. Maximal size of possible extension queue 783. Compared 215018 event pairs, 3961 based on Foata normal form. 2506/38153 useless extension candidates. Maximal degree in co-relation 99638. Up to 7779 conditions per place. [2024-10-11 19:59:57,814 INFO L140 encePairwiseOnDemand]: 49/58 looper letters, 308 selfloop transitions, 23 changer transitions 0/339 dead transitions. [2024-10-11 19:59:57,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 339 transitions, 2258 flow [2024-10-11 19:59:57,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 19:59:57,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-11 19:59:57,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 396 transitions. [2024-10-11 19:59:57,817 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5689655172413793 [2024-10-11 19:59:57,818 INFO L175 Difference]: Start difference. First operand has 93 places, 86 transitions, 443 flow. Second operand 12 states and 396 transitions. [2024-10-11 19:59:57,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 339 transitions, 2258 flow [2024-10-11 19:59:57,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 339 transitions, 2248 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 19:59:57,887 INFO L231 Difference]: Finished difference. Result has 103 places, 94 transitions, 537 flow [2024-10-11 19:59:57,888 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=537, PETRI_PLACES=103, PETRI_TRANSITIONS=94} [2024-10-11 19:59:57,888 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 45 predicate places. [2024-10-11 19:59:57,888 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 94 transitions, 537 flow [2024-10-11 19:59:57,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.0) internal successors, (228), 12 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:57,889 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:57,889 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:59:57,894 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2024-10-11 19:59:58,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:59:58,090 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-10-11 19:59:58,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:58,090 INFO L85 PathProgramCache]: Analyzing trace with hash 43009234, now seen corresponding path program 1 times [2024-10-11 19:59:58,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:59:58,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [746709866] [2024-10-11 19:59:58,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:59:58,090 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:59:58,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:59:58,092 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:59:58,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-10-11 19:59:58,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:59:58,161 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 19:59:58,162 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:58,172 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 8 treesize of output 7 [2024-10-11 19:59:58,457 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:59:58,458 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:59:58,768 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:59:58,769 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:58,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [746709866] [2024-10-11 19:59:58,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [746709866] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:59:58,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:59:58,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2024-10-11 19:59:58,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529148772] [2024-10-11 19:59:58,769 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:59:58,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 19:59:58,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:58,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 19:59:58,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-10-11 19:59:59,444 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 58 [2024-10-11 19:59:59,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 94 transitions, 537 flow. Second operand has 12 states, 12 states have (on average 19.333333333333332) internal successors, (232), 12 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:59:59,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:59,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 58 [2024-10-11 19:59:59,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:00:08,429 INFO L124 PetriNetUnfolderBase]: 49925/69751 cut-off events. [2024-10-11 20:00:08,430 INFO L125 PetriNetUnfolderBase]: For 98729/101545 co-relation queries the response was YES. [2024-10-11 20:00:08,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213413 conditions, 69751 events. 49925/69751 cut-off events. For 98729/101545 co-relation queries the response was YES. Maximal size of possible extension queue 1272. Compared 439243 event pairs, 7593 based on Foata normal form. 4452/74167 useless extension candidates. Maximal degree in co-relation 213361. Up to 16701 conditions per place. [2024-10-11 20:00:09,242 INFO L140 encePairwiseOnDemand]: 49/58 looper letters, 308 selfloop transitions, 24 changer transitions 0/343 dead transitions. [2024-10-11 20:00:09,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 343 transitions, 2563 flow [2024-10-11 20:00:09,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 20:00:09,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 20:00:09,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 352 transitions. [2024-10-11 20:00:09,245 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2024-10-11 20:00:09,246 INFO L175 Difference]: Start difference. First operand has 103 places, 94 transitions, 537 flow. Second operand 11 states and 352 transitions. [2024-10-11 20:00:09,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 343 transitions, 2563 flow [2024-10-11 20:00:09,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 343 transitions, 2439 flow, removed 48 selfloop flow, removed 3 redundant places. [2024-10-11 20:00:09,361 INFO L231 Difference]: Finished difference. Result has 113 places, 103 transitions, 628 flow [2024-10-11 20:00:09,361 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=628, PETRI_PLACES=113, PETRI_TRANSITIONS=103} [2024-10-11 20:00:09,361 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 55 predicate places. [2024-10-11 20:00:09,361 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 103 transitions, 628 flow [2024-10-11 20:00:09,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.333333333333332) internal successors, (232), 12 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:00:09,362 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:00:09,362 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:00:09,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2024-10-11 20:00:09,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:00:09,563 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-10-11 20:00:09,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:00:09,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1227172411, now seen corresponding path program 1 times [2024-10-11 20:00:09,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:00:09,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2068766785] [2024-10-11 20:00:09,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:00:09,564 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:00:09,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:00:09,565 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:00:09,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-10-11 20:00:09,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:00:09,640 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 20:00:09,641 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:00:09,778 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:00:09,778 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:00:10,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:00:10,005 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:00:10,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2068766785] [2024-10-11 20:00:10,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2068766785] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:00:10,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:00:10,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2024-10-11 20:00:10,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788470873] [2024-10-11 20:00:10,006 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:00:10,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 20:00:10,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:00:10,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 20:00:10,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-10-11 20:00:10,154 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-10-11 20:00:10,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 103 transitions, 628 flow. Second operand has 14 states, 14 states have (on average 21.071428571428573) internal successors, (295), 14 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:00:10,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:00:10,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-10-11 20:00:10,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:00:16,804 INFO L124 PetriNetUnfolderBase]: 38611/56559 cut-off events. [2024-10-11 20:00:16,805 INFO L125 PetriNetUnfolderBase]: For 93836/94770 co-relation queries the response was YES. [2024-10-11 20:00:17,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182655 conditions, 56559 events. 38611/56559 cut-off events. For 93836/94770 co-relation queries the response was YES. Maximal size of possible extension queue 998. Compared 372753 event pairs, 20419 based on Foata normal form. 1024/57555 useless extension candidates. Maximal degree in co-relation 182599. Up to 35610 conditions per place. [2024-10-11 20:00:17,637 INFO L140 encePairwiseOnDemand]: 50/58 looper letters, 157 selfloop transitions, 26 changer transitions 0/199 dead transitions. [2024-10-11 20:00:17,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 199 transitions, 1507 flow [2024-10-11 20:00:17,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 20:00:17,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 20:00:17,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 267 transitions. [2024-10-11 20:00:17,639 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5114942528735632 [2024-10-11 20:00:17,639 INFO L175 Difference]: Start difference. First operand has 113 places, 103 transitions, 628 flow. Second operand 9 states and 267 transitions. [2024-10-11 20:00:17,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 199 transitions, 1507 flow [2024-10-11 20:00:17,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 199 transitions, 1435 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-10-11 20:00:17,854 INFO L231 Difference]: Finished difference. Result has 117 places, 101 transitions, 648 flow [2024-10-11 20:00:17,854 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=648, PETRI_PLACES=117, PETRI_TRANSITIONS=101} [2024-10-11 20:00:17,855 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 59 predicate places. [2024-10-11 20:00:17,855 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 101 transitions, 648 flow [2024-10-11 20:00:17,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 21.071428571428573) internal successors, (295), 14 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:00:17,855 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:00:17,856 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:00:17,862 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2024-10-11 20:00:18,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:00:18,057 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-10-11 20:00:18,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:00:18,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1785775996, now seen corresponding path program 2 times [2024-10-11 20:00:18,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:00:18,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [72706150] [2024-10-11 20:00:18,059 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:00:18,059 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:00:18,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:00:18,061 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:00:18,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-10-11 20:00:18,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 20:00:18,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:00:18,141 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-11 20:00:18,143 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:00:18,155 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 8 treesize of output 7 [2024-10-11 20:00:18,526 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:00:18,526 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:00:19,554 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:00:19,554 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:00:19,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [72706150] [2024-10-11 20:00:19,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [72706150] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:00:19,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:00:19,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2024-10-11 20:00:19,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847601460] [2024-10-11 20:00:19,554 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:00:19,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-11 20:00:19,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:00:19,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-11 20:00:19,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2024-10-11 20:00:21,860 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-10-11 20:00:21,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 101 transitions, 648 flow. Second operand has 16 states, 16 states have (on average 21.125) internal successors, (338), 16 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:00:21,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:00:21,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-10-11 20:00:21,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:00:43,119 INFO L124 PetriNetUnfolderBase]: 82449/114971 cut-off events. [2024-10-11 20:00:43,119 INFO L125 PetriNetUnfolderBase]: For 183289/189211 co-relation queries the response was YES. [2024-10-11 20:00:44,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 376318 conditions, 114971 events. 82449/114971 cut-off events. For 183289/189211 co-relation queries the response was YES. Maximal size of possible extension queue 1840. Compared 754092 event pairs, 24847 based on Foata normal form. 2048/116996 useless extension candidates. Maximal degree in co-relation 376258. Up to 27201 conditions per place. [2024-10-11 20:00:44,492 INFO L140 encePairwiseOnDemand]: 48/58 looper letters, 504 selfloop transitions, 47 changer transitions 0/567 dead transitions. [2024-10-11 20:00:44,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 567 transitions, 4096 flow [2024-10-11 20:00:44,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-11 20:00:44,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-11 20:00:44,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 727 transitions. [2024-10-11 20:00:44,495 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5697492163009404 [2024-10-11 20:00:44,495 INFO L175 Difference]: Start difference. First operand has 117 places, 101 transitions, 648 flow. Second operand 22 states and 727 transitions. [2024-10-11 20:00:44,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 567 transitions, 4096 flow [2024-10-11 20:00:45,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 567 transitions, 4060 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-10-11 20:00:45,656 INFO L231 Difference]: Finished difference. Result has 138 places, 119 transitions, 872 flow [2024-10-11 20:00:45,656 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=612, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=872, PETRI_PLACES=138, PETRI_TRANSITIONS=119} [2024-10-11 20:00:45,657 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 80 predicate places. [2024-10-11 20:00:45,657 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 119 transitions, 872 flow [2024-10-11 20:00:45,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 21.125) internal successors, (338), 16 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:00:45,657 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:00:45,657 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:00:45,661 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2024-10-11 20:00:45,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:00:45,858 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-10-11 20:00:45,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:00:45,859 INFO L85 PathProgramCache]: Analyzing trace with hash -373075620, now seen corresponding path program 2 times [2024-10-11 20:00:45,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:00:45,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1868418397] [2024-10-11 20:00:45,859 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:00:45,859 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:00:45,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:00:45,861 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:00:45,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2024-10-11 20:00:45,924 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 20:00:45,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:00:45,925 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 20:00:45,927 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:00:45,935 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 8 treesize of output 7 [2024-10-11 20:00:46,135 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-11 20:00:46,135 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:00:46,135 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:00:46,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1868418397] [2024-10-11 20:00:46,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1868418397] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:00:46,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:00:46,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 20:00:46,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852115998] [2024-10-11 20:00:46,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:00:46,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 20:00:46,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:00:46,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 20:00:46,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 20:00:46,279 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 58 [2024-10-11 20:00:46,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 119 transitions, 872 flow. Second operand has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:00:46,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:00:46,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 58 [2024-10-11 20:00:46,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand