./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-min-max-inc.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 55079ed406966de8cb8f01bd4828043af39842b101d9722a0d33cee3b1fc3a52 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 19:54:45,074 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 19:54:45,164 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-14 19:54:45,170 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 19:54:45,171 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 19:54:45,200 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 19:54:45,201 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 19:54:45,201 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 19:54:45,202 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 19:54:45,204 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 19:54:45,204 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 19:54:45,204 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 19:54:45,205 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 19:54:45,205 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 19:54:45,206 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 19:54:45,209 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 19:54:45,209 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 19:54:45,209 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 19:54:45,209 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 19:54:45,210 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 19:54:45,210 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 19:54:45,211 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 19:54:45,211 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 19:54:45,211 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 19:54:45,212 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 19:54:45,212 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 19:54:45,212 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 19:54:45,213 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 19:54:45,213 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 19:54:45,213 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 19:54:45,213 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 19:54:45,214 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 19:54:45,214 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 19:54:45,214 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:54:45,215 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 19:54:45,215 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 19:54:45,215 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 19:54:45,216 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 19:54:45,216 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 19:54:45,216 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 19:54:45,216 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 19:54:45,217 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 19:54:45,217 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 55079ed406966de8cb8f01bd4828043af39842b101d9722a0d33cee3b1fc3a52 [2024-10-14 19:54:45,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 19:54:45,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 19:54:45,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 19:54:45,506 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 19:54:45,507 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 19:54:45,508 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c [2024-10-14 19:54:46,942 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 19:54:47,147 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 19:54:47,148 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c [2024-10-14 19:54:47,157 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f75ae3765/70bb19bf89fc49af9139a4338d8ed1bc/FLAG09226e52b [2024-10-14 19:54:47,170 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f75ae3765/70bb19bf89fc49af9139a4338d8ed1bc [2024-10-14 19:54:47,172 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 19:54:47,174 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 19:54:47,177 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 19:54:47,177 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 19:54:47,183 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 19:54:47,184 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:54:47" (1/1) ... [2024-10-14 19:54:47,185 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@614a5f12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:47, skipping insertion in model container [2024-10-14 19:54:47,185 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:54:47" (1/1) ... [2024-10-14 19:54:47,213 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:54:47,420 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:54:47,431 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) [2024-10-14 19:54:47,432 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4cf93aa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:47, skipping insertion in model container [2024-10-14 19:54:47,432 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 19:54:47,433 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-14 19:54:47,434 INFO L158 Benchmark]: Toolchain (without parser) took 259.95ms. Allocated memory is still 151.0MB. Free memory was 97.0MB in the beginning and 86.1MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-14 19:54:47,435 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 151.0MB. Free memory is still 112.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 19:54:47,435 INFO L158 Benchmark]: CACSL2BoogieTranslator took 255.35ms. Allocated memory is still 151.0MB. Free memory was 97.0MB in the beginning and 86.1MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-14 19:54:47,438 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 151.0MB. Free memory is still 112.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 255.35ms. Allocated memory is still 151.0MB. Free memory was 97.0MB in the beginning and 86.1MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 129]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 55079ed406966de8cb8f01bd4828043af39842b101d9722a0d33cee3b1fc3a52 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 19:54:49,527 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 19:54:49,617 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-14 19:54:49,623 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 19:54:49,624 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 19:54:49,661 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 19:54:49,662 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 19:54:49,662 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 19:54:49,663 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 19:54:49,663 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 19:54:49,664 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 19:54:49,664 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 19:54:49,665 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 19:54:49,669 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 19:54:49,669 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 19:54:49,670 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 19:54:49,670 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 19:54:49,670 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 19:54:49,670 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 19:54:49,671 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 19:54:49,671 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 19:54:49,672 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 19:54:49,674 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 19:54:49,674 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 19:54:49,674 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 19:54:49,675 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-14 19:54:49,675 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 19:54:49,675 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-14 19:54:49,675 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 19:54:49,676 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 19:54:49,676 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 19:54:49,676 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 19:54:49,676 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 19:54:49,677 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 19:54:49,677 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 19:54:49,677 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:54:49,678 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 19:54:49,679 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 19:54:49,679 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-14 19:54:49,679 INFO L153 SettingsManager]: * Command for external solver=cvc5 --incremental --print-success --lang smt [2024-10-14 19:54:49,680 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 19:54:49,680 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 19:54:49,680 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 19:54:49,680 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 19:54:49,681 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-14 19:54:49,681 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 55079ed406966de8cb8f01bd4828043af39842b101d9722a0d33cee3b1fc3a52 [2024-10-14 19:54:50,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 19:54:50,050 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 19:54:50,055 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 19:54:50,056 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 19:54:50,057 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 19:54:50,058 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c [2024-10-14 19:54:51,689 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 19:54:51,910 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 19:54:51,910 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c [2024-10-14 19:54:51,920 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccac0669e/903698715d154b63b942989812fcfe20/FLAGfebc275e9 [2024-10-14 19:54:51,939 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccac0669e/903698715d154b63b942989812fcfe20 [2024-10-14 19:54:51,941 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 19:54:51,943 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 19:54:51,945 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 19:54:51,945 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 19:54:51,950 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 19:54:51,951 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:54:51" (1/1) ... [2024-10-14 19:54:51,952 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@451c7383 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:51, skipping insertion in model container [2024-10-14 19:54:51,953 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:54:51" (1/1) ... [2024-10-14 19:54:51,979 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:54:52,226 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:54:52,244 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-14 19:54:52,252 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:54:52,284 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:54:52,289 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 19:54:52,323 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:54:52,346 INFO L204 MainTranslator]: Completed translation [2024-10-14 19:54:52,347 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:52 WrapperNode [2024-10-14 19:54:52,347 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 19:54:52,348 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 19:54:52,348 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 19:54:52,348 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 19:54:52,355 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:52" (1/1) ... [2024-10-14 19:54:52,373 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:52" (1/1) ... [2024-10-14 19:54:52,405 INFO L138 Inliner]: procedures = 27, calls = 44, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 117 [2024-10-14 19:54:52,408 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 19:54:52,418 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 19:54:52,418 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 19:54:52,418 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 19:54:52,430 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:52" (1/1) ... [2024-10-14 19:54:52,431 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:52" (1/1) ... [2024-10-14 19:54:52,437 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:52" (1/1) ... [2024-10-14 19:54:52,471 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-10-14 19:54:52,472 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:52" (1/1) ... [2024-10-14 19:54:52,472 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:52" (1/1) ... [2024-10-14 19:54:52,485 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:52" (1/1) ... [2024-10-14 19:54:52,493 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:52" (1/1) ... [2024-10-14 19:54:52,495 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:52" (1/1) ... [2024-10-14 19:54:52,501 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:52" (1/1) ... [2024-10-14 19:54:52,511 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 19:54:52,511 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 19:54:52,512 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 19:54:52,512 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 19:54:52,512 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:52" (1/1) ... [2024-10-14 19:54:52,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:54:52,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:54:52,546 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 19:54:52,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 19:54:52,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 19:54:52,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-14 19:54:52,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-14 19:54:52,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-14 19:54:52,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-14 19:54:52,601 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-14 19:54:52,601 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-14 19:54:52,601 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-14 19:54:52,601 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-14 19:54:52,601 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-14 19:54:52,601 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-14 19:54:52,601 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-14 19:54:52,601 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-14 19:54:52,601 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-14 19:54:52,602 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-14 19:54:52,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-14 19:54:52,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 19:54:52,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 19:54:52,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-14 19:54:52,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-14 19:54:52,604 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 19:54:52,757 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 19:54:52,759 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 19:54:53,275 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 19:54:53,275 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 19:54:53,604 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 19:54:53,605 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-14 19:54:53,605 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:54:53 BoogieIcfgContainer [2024-10-14 19:54:53,605 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 19:54:53,608 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 19:54:53,608 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 19:54:53,612 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 19:54:53,612 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:54:51" (1/3) ... [2024-10-14 19:54:53,613 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19dc75a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:54:53, skipping insertion in model container [2024-10-14 19:54:53,613 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:52" (2/3) ... [2024-10-14 19:54:53,613 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19dc75a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:54:53, skipping insertion in model container [2024-10-14 19:54:53,614 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:54:53" (3/3) ... [2024-10-14 19:54:53,615 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc.wvr.c [2024-10-14 19:54:53,634 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 19:54:53,634 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2024-10-14 19:54:53,635 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 19:54:53,722 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-14 19:54:53,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 69 transitions, 166 flow [2024-10-14 19:54:53,804 INFO L124 PetriNetUnfolderBase]: 4/65 cut-off events. [2024-10-14 19:54:53,805 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-14 19:54:53,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 65 events. 4/65 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 214 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2024-10-14 19:54:53,810 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 69 transitions, 166 flow [2024-10-14 19:54:53,815 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 64 transitions, 152 flow [2024-10-14 19:54:53,828 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 19:54:53,837 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;@76013c46, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 19:54:53,838 INFO L334 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2024-10-14 19:54:53,841 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 19:54:53,842 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-14 19:54:53,842 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:54:53,842 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:54:53,843 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 19:54:53,844 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-10-14 19:54:53,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:54:53,849 INFO L85 PathProgramCache]: Analyzing trace with hash 549374, now seen corresponding path program 1 times [2024-10-14 19:54:53,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:54:53,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1216749132] [2024-10-14 19:54:53,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:54:53,862 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 [2024-10-14 19:54:53,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:54:53,866 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:54:53,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-14 19:54:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:54:53,955 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 19:54:53,959 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:54:54,022 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 [2024-10-14 19:54:54,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:54,039 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:54:54,039 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:54:54,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1216749132] [2024-10-14 19:54:54,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1216749132] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:54:54,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:54:54,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 19:54:54,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509258707] [2024-10-14 19:54:54,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:54:54,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:54:54,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:54:54,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:54:54,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:54:54,099 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 69 [2024-10-14 19:54:54,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 64 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2024-10-14 19:54:54,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:54:54,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 69 [2024-10-14 19:54:54,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:54:56,221 INFO L124 PetriNetUnfolderBase]: 11431/16154 cut-off events. [2024-10-14 19:54:56,222 INFO L125 PetriNetUnfolderBase]: For 331/331 co-relation queries the response was YES. [2024-10-14 19:54:56,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32082 conditions, 16154 events. 11431/16154 cut-off events. For 331/331 co-relation queries the response was YES. Maximal size of possible extension queue 1122. Compared 109029 event pairs, 8159 based on Foata normal form. 1/10221 useless extension candidates. Maximal degree in co-relation 31041. Up to 14643 conditions per place. [2024-10-14 19:54:56,366 INFO L140 encePairwiseOnDemand]: 57/69 looper letters, 38 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2024-10-14 19:54:56,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 53 transitions, 210 flow [2024-10-14 19:54:56,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:54:56,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:54:56,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-10-14 19:54:56,380 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5024154589371981 [2024-10-14 19:54:56,382 INFO L175 Difference]: Start difference. First operand has 73 places, 64 transitions, 152 flow. Second operand 3 states and 104 transitions. [2024-10-14 19:54:56,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 53 transitions, 210 flow [2024-10-14 19:54:56,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 53 transitions, 194 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-10-14 19:54:56,475 INFO L231 Difference]: Finished difference. Result has 56 places, 53 transitions, 118 flow [2024-10-14 19:54:56,477 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=56, PETRI_TRANSITIONS=53} [2024-10-14 19:54:56,482 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, -17 predicate places. [2024-10-14 19:54:56,483 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 53 transitions, 118 flow [2024-10-14 19:54:56,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2024-10-14 19:54:56,483 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:54:56,483 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 19:54:56,488 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-10-14 19:54:56,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:54:56,685 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-10-14 19:54:56,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:54:56,686 INFO L85 PathProgramCache]: Analyzing trace with hash 549375, now seen corresponding path program 1 times [2024-10-14 19:54:56,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:54:56,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1169921665] [2024-10-14 19:54:56,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:54:56,686 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 [2024-10-14 19:54:56,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:54:56,688 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:54:56,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-14 19:54:56,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:54:56,771 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 19:54:56,773 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:54:56,797 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 [2024-10-14 19:54:56,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:56,907 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:54:56,908 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:54:56,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1169921665] [2024-10-14 19:54:56,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1169921665] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:54:56,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:54:56,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:54:56,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236635346] [2024-10-14 19:54:56,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:54:56,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:54:56,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:54:56,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:54:56,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:54:56,921 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 69 [2024-10-14 19:54:56,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 53 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2024-10-14 19:54:56,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:54:56,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 69 [2024-10-14 19:54:56,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:54:58,803 INFO L124 PetriNetUnfolderBase]: 11431/16156 cut-off events. [2024-10-14 19:54:58,903 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-10-14 19:54:58,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31386 conditions, 16156 events. 11431/16156 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 1122. Compared 108913 event pairs, 8159 based on Foata normal form. 1/10223 useless extension candidates. Maximal degree in co-relation 31367. Up to 14647 conditions per place. [2024-10-14 19:54:59,039 INFO L140 encePairwiseOnDemand]: 65/69 looper letters, 41 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2024-10-14 19:54:59,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 55 transitions, 208 flow [2024-10-14 19:54:59,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:54:59,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:54:59,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2024-10-14 19:54:59,049 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-10-14 19:54:59,050 INFO L175 Difference]: Start difference. First operand has 56 places, 53 transitions, 118 flow. Second operand 3 states and 99 transitions. [2024-10-14 19:54:59,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 55 transitions, 208 flow [2024-10-14 19:54:59,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 55 transitions, 204 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:54:59,052 INFO L231 Difference]: Finished difference. Result has 57 places, 54 transitions, 128 flow [2024-10-14 19:54:59,056 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=57, PETRI_TRANSITIONS=54} [2024-10-14 19:54:59,057 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, -16 predicate places. [2024-10-14 19:54:59,057 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 54 transitions, 128 flow [2024-10-14 19:54:59,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2024-10-14 19:54:59,058 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:54:59,058 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-14 19:54:59,068 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-10-14 19:54:59,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:54:59,261 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-10-14 19:54:59,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:54:59,262 INFO L85 PathProgramCache]: Analyzing trace with hash 527967317, now seen corresponding path program 1 times [2024-10-14 19:54:59,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:54:59,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1876738665] [2024-10-14 19:54:59,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:54:59,263 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 [2024-10-14 19:54:59,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:54:59,268 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:54:59,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-14 19:54:59,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:54:59,336 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-14 19:54:59,338 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:54:59,348 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 [2024-10-14 19:54:59,512 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:59,513 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:54:59,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:59,772 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:54:59,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1876738665] [2024-10-14 19:54:59,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1876738665] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:54:59,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:54:59,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-14 19:54:59,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092273949] [2024-10-14 19:54:59,773 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:54:59,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 19:54:59,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:54:59,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 19:54:59,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-14 19:54:59,819 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 69 [2024-10-14 19:54:59,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 54 transitions, 128 flow. Second operand has 10 states, 10 states have (on average 19.0) internal successors, (190), 10 states have internal predecessors, (190), 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) [2024-10-14 19:54:59,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:54:59,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 69 [2024-10-14 19:54:59,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:55:01,936 INFO L124 PetriNetUnfolderBase]: 11434/16165 cut-off events. [2024-10-14 19:55:01,937 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-10-14 19:55:01,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31415 conditions, 16165 events. 11434/16165 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 1122. Compared 109243 event pairs, 8159 based on Foata normal form. 0/10231 useless extension candidates. Maximal degree in co-relation 31402. Up to 14650 conditions per place. [2024-10-14 19:55:02,053 INFO L140 encePairwiseOnDemand]: 64/69 looper letters, 41 selfloop transitions, 11 changer transitions 0/64 dead transitions. [2024-10-14 19:55:02,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 64 transitions, 264 flow [2024-10-14 19:55:02,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 19:55:02,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 19:55:02,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 217 transitions. [2024-10-14 19:55:02,059 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3494363929146538 [2024-10-14 19:55:02,059 INFO L175 Difference]: Start difference. First operand has 57 places, 54 transitions, 128 flow. Second operand 9 states and 217 transitions. [2024-10-14 19:55:02,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 64 transitions, 264 flow [2024-10-14 19:55:02,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 64 transitions, 262 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 19:55:02,066 INFO L231 Difference]: Finished difference. Result has 67 places, 64 transitions, 200 flow [2024-10-14 19:55:02,066 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=200, PETRI_PLACES=67, PETRI_TRANSITIONS=64} [2024-10-14 19:55:02,067 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, -6 predicate places. [2024-10-14 19:55:02,068 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 64 transitions, 200 flow [2024-10-14 19:55:02,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 19.0) internal successors, (190), 10 states have internal predecessors, (190), 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) [2024-10-14 19:55:02,070 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:55:02,070 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:55:02,074 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-10-14 19:55:02,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:55:02,271 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-10-14 19:55:02,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:55:02,272 INFO L85 PathProgramCache]: Analyzing trace with hash 570562296, now seen corresponding path program 1 times [2024-10-14 19:55:02,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:55:02,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [504070091] [2024-10-14 19:55:02,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:55:02,273 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 [2024-10-14 19:55:02,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:55:02,277 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:55:02,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-14 19:55:02,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:55:02,346 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 19:55:02,348 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:55:02,354 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 [2024-10-14 19:55:02,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:55:02,388 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:55:02,388 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:55:02,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [504070091] [2024-10-14 19:55:02,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [504070091] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:55:02,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:55:02,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:55:02,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551229583] [2024-10-14 19:55:02,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:55:02,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:55:02,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:55:02,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:55:02,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:55:02,411 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 69 [2024-10-14 19:55:02,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 64 transitions, 200 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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) [2024-10-14 19:55:02,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:55:02,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 69 [2024-10-14 19:55:02,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:55:03,171 INFO L124 PetriNetUnfolderBase]: 5709/8216 cut-off events. [2024-10-14 19:55:03,171 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-14 19:55:03,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15936 conditions, 8216 events. 5709/8216 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 51542 event pairs, 4029 based on Foata normal form. 0/6116 useless extension candidates. Maximal degree in co-relation 15905. Up to 7368 conditions per place. [2024-10-14 19:55:03,217 INFO L140 encePairwiseOnDemand]: 62/69 looper letters, 41 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2024-10-14 19:55:03,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 59 transitions, 282 flow [2024-10-14 19:55:03,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:55:03,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:55:03,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2024-10-14 19:55:03,219 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4057971014492754 [2024-10-14 19:55:03,219 INFO L175 Difference]: Start difference. First operand has 67 places, 64 transitions, 200 flow. Second operand 4 states and 112 transitions. [2024-10-14 19:55:03,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 59 transitions, 282 flow [2024-10-14 19:55:03,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 59 transitions, 268 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-14 19:55:03,223 INFO L231 Difference]: Finished difference. Result has 64 places, 59 transitions, 186 flow [2024-10-14 19:55:03,224 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=64, PETRI_TRANSITIONS=59} [2024-10-14 19:55:03,225 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, -9 predicate places. [2024-10-14 19:55:03,226 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 59 transitions, 186 flow [2024-10-14 19:55:03,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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) [2024-10-14 19:55:03,226 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:55:03,226 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:55:03,231 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-10-14 19:55:03,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:55:03,427 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-10-14 19:55:03,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:55:03,427 INFO L85 PathProgramCache]: Analyzing trace with hash 570562297, now seen corresponding path program 1 times [2024-10-14 19:55:03,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:55:03,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1346506533] [2024-10-14 19:55:03,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:55:03,428 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 [2024-10-14 19:55:03,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:55:03,431 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:55:03,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-10-14 19:55:03,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:55:03,496 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 19:55:03,497 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:55:03,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:55:03,567 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:55:03,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2024-10-14 19:55:03,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:55:03,721 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:55:03,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1346506533] [2024-10-14 19:55:03,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1346506533] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:55:03,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:55:03,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2024-10-14 19:55:03,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512365228] [2024-10-14 19:55:03,722 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:55:03,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 19:55:03,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:55:03,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 19:55:03,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-14 19:55:03,772 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 69 [2024-10-14 19:55:03,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 186 flow. Second operand has 8 states, 8 states have (on average 20.5) internal successors, (164), 8 states have internal predecessors, (164), 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) [2024-10-14 19:55:03,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:55:03,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 69 [2024-10-14 19:55:03,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:55:04,431 INFO L124 PetriNetUnfolderBase]: 4336/6228 cut-off events. [2024-10-14 19:55:04,431 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-10-14 19:55:04,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12068 conditions, 6228 events. 4336/6228 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 37779 event pairs, 2926 based on Foata normal form. 0/4892 useless extension candidates. Maximal degree in co-relation 12036. Up to 5568 conditions per place. [2024-10-14 19:55:04,460 INFO L140 encePairwiseOnDemand]: 64/69 looper letters, 37 selfloop transitions, 7 changer transitions 0/57 dead transitions. [2024-10-14 19:55:04,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 57 transitions, 270 flow [2024-10-14 19:55:04,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 19:55:04,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 19:55:04,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-10-14 19:55:04,463 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3719806763285024 [2024-10-14 19:55:04,463 INFO L175 Difference]: Start difference. First operand has 64 places, 59 transitions, 186 flow. Second operand 6 states and 154 transitions. [2024-10-14 19:55:04,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 57 transitions, 270 flow [2024-10-14 19:55:04,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 57 transitions, 264 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:55:04,465 INFO L231 Difference]: Finished difference. Result has 65 places, 57 transitions, 190 flow [2024-10-14 19:55:04,465 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=190, PETRI_PLACES=65, PETRI_TRANSITIONS=57} [2024-10-14 19:55:04,466 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, -8 predicate places. [2024-10-14 19:55:04,466 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 57 transitions, 190 flow [2024-10-14 19:55:04,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.5) internal successors, (164), 8 states have internal predecessors, (164), 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) [2024-10-14 19:55:04,467 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:55:04,467 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-14 19:55:04,472 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-10-14 19:55:04,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:55:04,668 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-10-14 19:55:04,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:55:04,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1927903831, now seen corresponding path program 2 times [2024-10-14 19:55:04,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:55:04,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [84257032] [2024-10-14 19:55:04,670 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:55:04,670 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 [2024-10-14 19:55:04,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:55:04,674 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:55:04,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-10-14 19:55:04,748 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:55:04,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:55:04,751 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 19:55:04,752 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:55:04,766 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 [2024-10-14 19:55:05,046 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:55:05,046 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:55:05,695 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:55:05,695 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:55:05,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [84257032] [2024-10-14 19:55:05,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [84257032] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:55:05,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:55:05,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-14 19:55:05,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620402199] [2024-10-14 19:55:05,696 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:55:05,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-14 19:55:05,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:55:05,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-14 19:55:05,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-14 19:55:05,776 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 69 [2024-10-14 19:55:05,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 57 transitions, 190 flow. Second operand has 14 states, 14 states have (on average 19.571428571428573) internal successors, (274), 14 states have internal predecessors, (274), 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) [2024-10-14 19:55:05,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:55:05,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 69 [2024-10-14 19:55:05,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:55:08,413 INFO L124 PetriNetUnfolderBase]: 4342/6246 cut-off events. [2024-10-14 19:55:08,414 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2024-10-14 19:55:08,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12153 conditions, 6246 events. 4342/6246 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 37984 event pairs, 2926 based on Foata normal form. 6/4916 useless extension candidates. Maximal degree in co-relation 12041. Up to 5579 conditions per place. [2024-10-14 19:55:08,442 INFO L140 encePairwiseOnDemand]: 64/69 looper letters, 34 selfloop transitions, 29 changer transitions 0/75 dead transitions. [2024-10-14 19:55:08,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 75 transitions, 430 flow [2024-10-14 19:55:08,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-14 19:55:08,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-14 19:55:08,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 447 transitions. [2024-10-14 19:55:08,445 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3084886128364389 [2024-10-14 19:55:08,445 INFO L175 Difference]: Start difference. First operand has 65 places, 57 transitions, 190 flow. Second operand 21 states and 447 transitions. [2024-10-14 19:55:08,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 75 transitions, 430 flow [2024-10-14 19:55:08,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 75 transitions, 424 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 19:55:08,449 INFO L231 Difference]: Finished difference. Result has 88 places, 75 transitions, 386 flow [2024-10-14 19:55:08,449 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=386, PETRI_PLACES=88, PETRI_TRANSITIONS=75} [2024-10-14 19:55:08,452 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 15 predicate places. [2024-10-14 19:55:08,452 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 75 transitions, 386 flow [2024-10-14 19:55:08,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 19.571428571428573) internal successors, (274), 14 states have internal predecessors, (274), 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) [2024-10-14 19:55:08,452 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:55:08,453 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:55:08,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2024-10-14 19:55:08,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:55:08,653 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-10-14 19:55:08,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:55:08,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1781827842, now seen corresponding path program 1 times [2024-10-14 19:55:08,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:55:08,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [631101016] [2024-10-14 19:55:08,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:55:08,654 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 [2024-10-14 19:55:08,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:55:08,656 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:55:08,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-10-14 19:55:08,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:55:08,715 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 19:55:08,716 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:55:08,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:55:08,784 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:55:08,784 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:55:08,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [631101016] [2024-10-14 19:55:08,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [631101016] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:55:08,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:55:08,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:55:08,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914742406] [2024-10-14 19:55:08,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:55:08,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 19:55:08,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:55:08,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 19:55:08,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-14 19:55:08,808 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 69 [2024-10-14 19:55:08,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 75 transitions, 386 flow. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 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) [2024-10-14 19:55:08,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:55:08,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 69 [2024-10-14 19:55:08,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:55:09,339 INFO L124 PetriNetUnfolderBase]: 4709/7027 cut-off events. [2024-10-14 19:55:09,339 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2024-10-14 19:55:09,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13651 conditions, 7027 events. 4709/7027 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 42053 event pairs, 799 based on Foata normal form. 0/6147 useless extension candidates. Maximal degree in co-relation 13600. Up to 4518 conditions per place. [2024-10-14 19:55:09,380 INFO L140 encePairwiseOnDemand]: 60/69 looper letters, 81 selfloop transitions, 17 changer transitions 0/110 dead transitions. [2024-10-14 19:55:09,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 110 transitions, 658 flow [2024-10-14 19:55:09,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 19:55:09,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 19:55:09,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 178 transitions. [2024-10-14 19:55:09,381 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42995169082125606 [2024-10-14 19:55:09,381 INFO L175 Difference]: Start difference. First operand has 88 places, 75 transitions, 386 flow. Second operand 6 states and 178 transitions. [2024-10-14 19:55:09,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 110 transitions, 658 flow [2024-10-14 19:55:09,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 110 transitions, 570 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-10-14 19:55:09,385 INFO L231 Difference]: Finished difference. Result has 87 places, 80 transitions, 370 flow [2024-10-14 19:55:09,386 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=370, PETRI_PLACES=87, PETRI_TRANSITIONS=80} [2024-10-14 19:55:09,386 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 14 predicate places. [2024-10-14 19:55:09,386 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 80 transitions, 370 flow [2024-10-14 19:55:09,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 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) [2024-10-14 19:55:09,387 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:55:09,387 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:55:09,390 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-10-14 19:55:09,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:55:09,588 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-10-14 19:55:09,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:55:09,588 INFO L85 PathProgramCache]: Analyzing trace with hash 940821450, now seen corresponding path program 1 times [2024-10-14 19:55:09,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:55:09,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2117017757] [2024-10-14 19:55:09,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:55:09,589 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 [2024-10-14 19:55:09,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:55:09,590 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:55:09,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-10-14 19:55:09,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:55:09,665 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-14 19:55:09,666 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:55:09,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:55:09,750 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:55:09,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2024-10-14 19:55:09,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:55:09,923 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:55:09,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2117017757] [2024-10-14 19:55:09,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2117017757] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:55:09,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:55:09,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-14 19:55:09,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430671767] [2024-10-14 19:55:09,924 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:55:09,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 19:55:09,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:55:09,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 19:55:09,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-14 19:55:10,003 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 69 [2024-10-14 19:55:10,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 80 transitions, 370 flow. Second operand has 10 states, 10 states have (on average 21.2) internal successors, (212), 10 states have internal predecessors, (212), 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) [2024-10-14 19:55:10,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:55:10,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 69 [2024-10-14 19:55:10,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:55:11,329 INFO L124 PetriNetUnfolderBase]: 6889/9586 cut-off events. [2024-10-14 19:55:11,329 INFO L125 PetriNetUnfolderBase]: For 2194/2717 co-relation queries the response was YES. [2024-10-14 19:55:11,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21950 conditions, 9586 events. 6889/9586 cut-off events. For 2194/2717 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 56270 event pairs, 2211 based on Foata normal form. 789/9471 useless extension candidates. Maximal degree in co-relation 21902. Up to 5318 conditions per place. [2024-10-14 19:55:11,413 INFO L140 encePairwiseOnDemand]: 61/69 looper letters, 90 selfloop transitions, 18 changer transitions 0/121 dead transitions. [2024-10-14 19:55:11,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 121 transitions, 714 flow [2024-10-14 19:55:11,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 19:55:11,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-14 19:55:11,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 226 transitions. [2024-10-14 19:55:11,417 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40942028985507245 [2024-10-14 19:55:11,417 INFO L175 Difference]: Start difference. First operand has 87 places, 80 transitions, 370 flow. Second operand 8 states and 226 transitions. [2024-10-14 19:55:11,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 121 transitions, 714 flow [2024-10-14 19:55:11,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 121 transitions, 690 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 19:55:11,423 INFO L231 Difference]: Finished difference. Result has 93 places, 83 transitions, 420 flow [2024-10-14 19:55:11,424 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=420, PETRI_PLACES=93, PETRI_TRANSITIONS=83} [2024-10-14 19:55:11,428 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 20 predicate places. [2024-10-14 19:55:11,428 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 83 transitions, 420 flow [2024-10-14 19:55:11,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 21.2) internal successors, (212), 10 states have internal predecessors, (212), 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) [2024-10-14 19:55:11,429 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:55:11,429 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:55:11,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2024-10-14 19:55:11,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:55:11,630 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-10-14 19:55:11,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:55:11,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1303907659, now seen corresponding path program 1 times [2024-10-14 19:55:11,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:55:11,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1130164318] [2024-10-14 19:55:11,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:55:11,631 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 [2024-10-14 19:55:11,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:55:11,634 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:55:11,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-10-14 19:55:11,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:55:11,701 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 19:55:11,702 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:55:11,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:55:11,768 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:55:11,768 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:55:11,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1130164318] [2024-10-14 19:55:11,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1130164318] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:55:11,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:55:11,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:55:11,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898613672] [2024-10-14 19:55:11,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:55:11,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 19:55:11,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:55:11,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 19:55:11,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-14 19:55:11,779 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 69 [2024-10-14 19:55:11,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 83 transitions, 420 flow. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 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) [2024-10-14 19:55:11,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:55:11,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 69 [2024-10-14 19:55:11,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:55:13,018 INFO L124 PetriNetUnfolderBase]: 8649/12218 cut-off events. [2024-10-14 19:55:13,018 INFO L125 PetriNetUnfolderBase]: For 7401/8019 co-relation queries the response was YES. [2024-10-14 19:55:13,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31508 conditions, 12218 events. 8649/12218 cut-off events. For 7401/8019 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 72475 event pairs, 2175 based on Foata normal form. 618/12458 useless extension candidates. Maximal degree in co-relation 31457. Up to 8508 conditions per place. [2024-10-14 19:55:13,139 INFO L140 encePairwiseOnDemand]: 60/69 looper letters, 89 selfloop transitions, 17 changer transitions 0/118 dead transitions. [2024-10-14 19:55:13,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 118 transitions, 756 flow [2024-10-14 19:55:13,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 19:55:13,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 19:55:13,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 176 transitions. [2024-10-14 19:55:13,141 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4251207729468599 [2024-10-14 19:55:13,141 INFO L175 Difference]: Start difference. First operand has 93 places, 83 transitions, 420 flow. Second operand 6 states and 176 transitions. [2024-10-14 19:55:13,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 118 transitions, 756 flow [2024-10-14 19:55:13,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 118 transitions, 740 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-14 19:55:13,155 INFO L231 Difference]: Finished difference. Result has 95 places, 85 transitions, 451 flow [2024-10-14 19:55:13,156 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=451, PETRI_PLACES=95, PETRI_TRANSITIONS=85} [2024-10-14 19:55:13,156 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 22 predicate places. [2024-10-14 19:55:13,157 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 85 transitions, 451 flow [2024-10-14 19:55:13,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 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) [2024-10-14 19:55:13,157 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:55:13,157 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:55:13,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2024-10-14 19:55:13,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:55:13,358 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-10-14 19:55:13,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:55:13,358 INFO L85 PathProgramCache]: Analyzing trace with hash -931787505, now seen corresponding path program 1 times [2024-10-14 19:55:13,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:55:13,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1757277664] [2024-10-14 19:55:13,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:55:13,359 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 [2024-10-14 19:55:13,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:55:13,360 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:55:13,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-10-14 19:55:13,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:55:13,443 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-14 19:55:13,445 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:55:13,462 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 [2024-10-14 19:55:13,722 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:55:13,722 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:55:14,038 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:55:14,039 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:55:14,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1757277664] [2024-10-14 19:55:14,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1757277664] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:55:14,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:55:14,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2024-10-14 19:55:14,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485557968] [2024-10-14 19:55:14,040 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:55:14,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 19:55:14,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:55:14,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 19:55:14,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-10-14 19:55:14,281 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 69 [2024-10-14 19:55:14,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 85 transitions, 451 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) [2024-10-14 19:55:14,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:55:14,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 69 [2024-10-14 19:55:14,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:55:17,992 INFO L124 PetriNetUnfolderBase]: 20199/26771 cut-off events. [2024-10-14 19:55:17,993 INFO L125 PetriNetUnfolderBase]: For 21940/23625 co-relation queries the response was YES. [2024-10-14 19:55:18,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76332 conditions, 26771 events. 20199/26771 cut-off events. For 21940/23625 co-relation queries the response was YES. Maximal size of possible extension queue 932. Compared 155954 event pairs, 4578 based on Foata normal form. 2925/29461 useless extension candidates. Maximal degree in co-relation 76279. Up to 8600 conditions per place. [2024-10-14 19:55:18,306 INFO L140 encePairwiseOnDemand]: 61/69 looper letters, 252 selfloop transitions, 23 changer transitions 0/286 dead transitions. [2024-10-14 19:55:18,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 286 transitions, 1775 flow [2024-10-14 19:55:18,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-14 19:55:18,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-14 19:55:18,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 406 transitions. [2024-10-14 19:55:18,309 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49033816425120774 [2024-10-14 19:55:18,309 INFO L175 Difference]: Start difference. First operand has 95 places, 85 transitions, 451 flow. Second operand 12 states and 406 transitions. [2024-10-14 19:55:18,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 286 transitions, 1775 flow [2024-10-14 19:55:18,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 286 transitions, 1728 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-14 19:55:18,328 INFO L231 Difference]: Finished difference. Result has 106 places, 94 transitions, 528 flow [2024-10-14 19:55:18,328 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=91, 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=528, PETRI_PLACES=106, PETRI_TRANSITIONS=94} [2024-10-14 19:55:18,329 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 33 predicate places. [2024-10-14 19:55:18,329 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 94 transitions, 528 flow [2024-10-14 19:55:18,329 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) [2024-10-14 19:55:18,329 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:55:18,329 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:55:18,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2024-10-14 19:55:18,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:55:18,530 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-10-14 19:55:18,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:55:18,530 INFO L85 PathProgramCache]: Analyzing trace with hash -944030150, now seen corresponding path program 1 times [2024-10-14 19:55:18,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:55:18,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [945618557] [2024-10-14 19:55:18,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:55:18,531 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 [2024-10-14 19:55:18,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:55:18,532 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:55:18,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-10-14 19:55:18,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:55:18,602 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-14 19:55:18,604 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:55:18,618 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 [2024-10-14 19:55:18,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:55:18,824 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:55:19,212 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:55:19,213 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:55:19,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [945618557] [2024-10-14 19:55:19,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [945618557] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:55:19,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:55:19,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2024-10-14 19:55:19,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338195497] [2024-10-14 19:55:19,213 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:55:19,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 19:55:19,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:55:19,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 19:55:19,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-10-14 19:55:19,505 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 69 [2024-10-14 19:55:19,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 94 transitions, 528 flow. Second operand has 12 states, 12 states have (on average 20.5) internal successors, (246), 12 states have internal predecessors, (246), 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) [2024-10-14 19:55:19,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:55:19,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 69 [2024-10-14 19:55:19,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:55:24,045 INFO L124 PetriNetUnfolderBase]: 35459/46831 cut-off events. [2024-10-14 19:55:24,045 INFO L125 PetriNetUnfolderBase]: For 64758/73054 co-relation queries the response was YES. [2024-10-14 19:55:24,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142523 conditions, 46831 events. 35459/46831 cut-off events. For 64758/73054 co-relation queries the response was YES. Maximal size of possible extension queue 1442. Compared 292906 event pairs, 7483 based on Foata normal form. 9432/56101 useless extension candidates. Maximal degree in co-relation 142466. Up to 13545 conditions per place. [2024-10-14 19:55:24,656 INFO L140 encePairwiseOnDemand]: 61/69 looper letters, 271 selfloop transitions, 23 changer transitions 0/310 dead transitions. [2024-10-14 19:55:24,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 310 transitions, 2129 flow [2024-10-14 19:55:24,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-14 19:55:24,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-14 19:55:24,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 399 transitions. [2024-10-14 19:55:24,658 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48188405797101447 [2024-10-14 19:55:24,658 INFO L175 Difference]: Start difference. First operand has 106 places, 94 transitions, 528 flow. Second operand 12 states and 399 transitions. [2024-10-14 19:55:24,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 310 transitions, 2129 flow [2024-10-14 19:55:24,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 310 transitions, 1999 flow, removed 54 selfloop flow, removed 3 redundant places. [2024-10-14 19:55:24,760 INFO L231 Difference]: Finished difference. Result has 118 places, 103 transitions, 615 flow [2024-10-14 19:55:24,760 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=615, PETRI_PLACES=118, PETRI_TRANSITIONS=103} [2024-10-14 19:55:24,761 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 45 predicate places. [2024-10-14 19:55:24,761 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 103 transitions, 615 flow [2024-10-14 19:55:24,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 20.5) internal successors, (246), 12 states have internal predecessors, (246), 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) [2024-10-14 19:55:24,761 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:55:24,762 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:55:24,766 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2024-10-14 19:55:24,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:55:24,962 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-10-14 19:55:24,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:55:24,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1029500400, now seen corresponding path program 1 times [2024-10-14 19:55:24,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:55:24,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [836424705] [2024-10-14 19:55:24,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:55:24,963 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 [2024-10-14 19:55:24,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:55:24,964 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:55:24,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-10-14 19:55:25,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:55:25,036 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-14 19:55:25,037 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:55:25,046 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 [2024-10-14 19:55:25,260 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:55:25,261 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:55:25,587 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:55:25,587 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:55:25,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [836424705] [2024-10-14 19:55:25,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [836424705] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:55:25,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:55:25,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2024-10-14 19:55:25,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462992681] [2024-10-14 19:55:25,588 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:55:25,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 19:55:25,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:55:25,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 19:55:25,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-10-14 19:55:25,798 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 69 [2024-10-14 19:55:25,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 103 transitions, 615 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) [2024-10-14 19:55:25,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:55:25,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 69 [2024-10-14 19:55:25,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:55:37,450 INFO L124 PetriNetUnfolderBase]: 69817/92493 cut-off events. [2024-10-14 19:55:37,451 INFO L125 PetriNetUnfolderBase]: For 239934/257519 co-relation queries the response was YES. [2024-10-14 19:55:38,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310650 conditions, 92493 events. 69817/92493 cut-off events. For 239934/257519 co-relation queries the response was YES. Maximal size of possible extension queue 2176. Compared 588742 event pairs, 16851 based on Foata normal form. 17029/109230 useless extension candidates. Maximal degree in co-relation 310588. Up to 29157 conditions per place. [2024-10-14 19:55:38,702 INFO L140 encePairwiseOnDemand]: 61/69 looper letters, 333 selfloop transitions, 23 changer transitions 0/375 dead transitions. [2024-10-14 19:55:38,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 375 transitions, 2858 flow [2024-10-14 19:55:38,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-14 19:55:38,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-14 19:55:38,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 397 transitions. [2024-10-14 19:55:38,704 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47946859903381644 [2024-10-14 19:55:38,704 INFO L175 Difference]: Start difference. First operand has 118 places, 103 transitions, 615 flow. Second operand 12 states and 397 transitions. [2024-10-14 19:55:38,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 375 transitions, 2858 flow [2024-10-14 19:55:38,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 375 transitions, 2774 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-10-14 19:55:38,908 INFO L231 Difference]: Finished difference. Result has 130 places, 112 transitions, 703 flow [2024-10-14 19:55:38,909 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=703, PETRI_PLACES=130, PETRI_TRANSITIONS=112} [2024-10-14 19:55:38,910 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 57 predicate places. [2024-10-14 19:55:38,910 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 112 transitions, 703 flow [2024-10-14 19:55:38,910 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) [2024-10-14 19:55:38,911 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:55:38,911 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:55:38,916 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2024-10-14 19:55:39,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:55:39,111 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-10-14 19:55:39,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:55:39,112 INFO L85 PathProgramCache]: Analyzing trace with hash -995220546, now seen corresponding path program 2 times [2024-10-14 19:55:39,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:55:39,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1953131406] [2024-10-14 19:55:39,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:55:39,112 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 [2024-10-14 19:55:39,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:55:39,113 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:55:39,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-10-14 19:55:39,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:55:39,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:55:39,188 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-14 19:55:39,189 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:55:39,201 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 [2024-10-14 19:55:39,536 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:55:39,536 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:55:40,374 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:55:40,374 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:55:40,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1953131406] [2024-10-14 19:55:40,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1953131406] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:55:40,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:55:40,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 17 [2024-10-14 19:55:40,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277836191] [2024-10-14 19:55:40,375 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:55:40,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-14 19:55:40,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:55:40,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-14 19:55:40,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2024-10-14 19:55:40,910 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 69 [2024-10-14 19:55:40,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 112 transitions, 703 flow. Second operand has 18 states, 18 states have (on average 19.77777777777778) internal successors, (356), 18 states have internal predecessors, (356), 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) [2024-10-14 19:55:40,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:55:40,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 69 [2024-10-14 19:55:40,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand