./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/unroll-cond-5.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/unroll-cond-5.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 052a68c73a5d1c6e7122fc0c660c02483f37277d0239d876d93b351fcdd64a16 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 20:00:42,196 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 20:00:42,248 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-14 20:00:42,253 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 20:00:42,253 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 20:00:42,280 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 20:00:42,281 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 20:00:42,281 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 20:00:42,282 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 20:00:42,282 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 20:00:42,282 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 20:00:42,283 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 20:00:42,283 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 20:00:42,284 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 20:00:42,284 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 20:00:42,284 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 20:00:42,285 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 20:00:42,285 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 20:00:42,285 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 20:00:42,286 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 20:00:42,286 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 20:00:42,286 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 20:00:42,287 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 20:00:42,288 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 20:00:42,289 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 20:00:42,289 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 20:00:42,289 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 20:00:42,289 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 20:00:42,290 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 20:00:42,290 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 20:00:42,290 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 20:00:42,290 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 20:00:42,291 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 20:00:42,291 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 20:00:42,291 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 20:00:42,291 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 20:00:42,292 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 20:00:42,292 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 20:00:42,293 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 20:00:42,293 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 20:00:42,294 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 20:00:42,295 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 20:00:42,295 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 052a68c73a5d1c6e7122fc0c660c02483f37277d0239d876d93b351fcdd64a16 [2024-10-14 20:00:42,538 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 20:00:42,562 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 20:00:42,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 20:00:42,566 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 20:00:42,566 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 20:00:42,567 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-5.wvr.c [2024-10-14 20:00:44,017 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 20:00:44,209 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 20:00:44,210 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-5.wvr.c [2024-10-14 20:00:44,218 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b6a9e3dc/6970750b9a864a5ebc4968f3d70f58ff/FLAG90ed5266a [2024-10-14 20:00:44,231 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b6a9e3dc/6970750b9a864a5ebc4968f3d70f58ff [2024-10-14 20:00:44,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 20:00:44,234 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 20:00:44,235 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 20:00:44,235 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 20:00:44,242 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 20:00:44,243 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:00:44" (1/1) ... [2024-10-14 20:00:44,244 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@259f7b21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:00:44, skipping insertion in model container [2024-10-14 20:00:44,245 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:00:44" (1/1) ... [2024-10-14 20:00:44,270 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 20:00:44,467 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 20:00:44,477 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 20:00:44,478 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@62d4b950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:00:44, skipping insertion in model container [2024-10-14 20:00:44,478 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 20:00:44,479 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-14 20:00:44,480 INFO L158 Benchmark]: Toolchain (without parser) took 245.41ms. Allocated memory is still 176.2MB. Free memory was 106.8MB in the beginning and 95.7MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-14 20:00:44,481 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 113.2MB. Free memory is still 74.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 20:00:44,482 INFO L158 Benchmark]: CACSL2BoogieTranslator took 243.36ms. Allocated memory is still 176.2MB. Free memory was 106.6MB in the beginning and 95.9MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-14 20:00:44,483 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 113.2MB. Free memory is still 74.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 243.36ms. Allocated memory is still 176.2MB. Free memory was 106.6MB in the beginning and 95.9MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 124]: 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/unroll-cond-5.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 052a68c73a5d1c6e7122fc0c660c02483f37277d0239d876d93b351fcdd64a16 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 20:00:46,504 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 20:00:46,583 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-14 20:00:46,590 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 20:00:46,591 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 20:00:46,625 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 20:00:46,626 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 20:00:46,626 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 20:00:46,627 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 20:00:46,628 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 20:00:46,628 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 20:00:46,629 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 20:00:46,629 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 20:00:46,630 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 20:00:46,631 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 20:00:46,632 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 20:00:46,632 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 20:00:46,632 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 20:00:46,632 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 20:00:46,632 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 20:00:46,633 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 20:00:46,633 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 20:00:46,634 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 20:00:46,634 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 20:00:46,634 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 20:00:46,634 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-14 20:00:46,634 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 20:00:46,635 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-14 20:00:46,635 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 20:00:46,635 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 20:00:46,635 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 20:00:46,636 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 20:00:46,636 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 20:00:46,636 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 20:00:46,636 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 20:00:46,637 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 20:00:46,643 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 20:00:46,644 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 20:00:46,644 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-14 20:00:46,645 INFO L153 SettingsManager]: * Command for external solver=cvc5 --incremental --print-success --lang smt [2024-10-14 20:00:46,645 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 20:00:46,646 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 20:00:46,647 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 20:00:46,647 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 20:00:46,647 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-14 20:00:46,648 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 052a68c73a5d1c6e7122fc0c660c02483f37277d0239d876d93b351fcdd64a16 [2024-10-14 20:00:46,948 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 20:00:46,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 20:00:46,969 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 20:00:46,970 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 20:00:46,970 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 20:00:46,972 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-5.wvr.c [2024-10-14 20:00:48,448 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 20:00:48,637 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 20:00:48,637 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-5.wvr.c [2024-10-14 20:00:48,648 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/731a23422/c96d3680d3e74dccab16c1e6028f66ad/FLAG4fb39b91b [2024-10-14 20:00:48,668 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/731a23422/c96d3680d3e74dccab16c1e6028f66ad [2024-10-14 20:00:48,671 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 20:00:48,674 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 20:00:48,676 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 20:00:48,678 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 20:00:48,683 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 20:00:48,684 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:00:48" (1/1) ... [2024-10-14 20:00:48,687 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4269bcf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:00:48, skipping insertion in model container [2024-10-14 20:00:48,687 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:00:48" (1/1) ... [2024-10-14 20:00:48,712 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 20:00:48,941 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 20:00:48,957 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-14 20:00:48,965 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 20:00:48,996 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 20:00:49,003 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 20:00:49,036 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 20:00:49,060 INFO L204 MainTranslator]: Completed translation [2024-10-14 20:00:49,061 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:00:49 WrapperNode [2024-10-14 20:00:49,061 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 20:00:49,062 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 20:00:49,062 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 20:00:49,062 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 20:00:49,068 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:00:49" (1/1) ... [2024-10-14 20:00:49,082 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:00:49" (1/1) ... [2024-10-14 20:00:49,119 INFO L138 Inliner]: procedures = 25, calls = 36, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 197 [2024-10-14 20:00:49,120 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 20:00:49,123 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 20:00:49,123 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 20:00:49,124 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 20:00:49,135 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:00:49" (1/1) ... [2024-10-14 20:00:49,135 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:00:49" (1/1) ... [2024-10-14 20:00:49,141 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:00:49" (1/1) ... [2024-10-14 20:00:49,164 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-14 20:00:49,167 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:00:49" (1/1) ... [2024-10-14 20:00:49,168 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:00:49" (1/1) ... [2024-10-14 20:00:49,184 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:00:49" (1/1) ... [2024-10-14 20:00:49,189 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:00:49" (1/1) ... [2024-10-14 20:00:49,191 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:00:49" (1/1) ... [2024-10-14 20:00:49,196 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:00:49" (1/1) ... [2024-10-14 20:00:49,199 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 20:00:49,202 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 20:00:49,202 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 20:00:49,202 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 20:00:49,203 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:00:49" (1/1) ... [2024-10-14 20:00:49,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 20:00:49,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 20:00:49,231 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 20:00:49,233 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 20:00:49,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 20:00:49,269 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-14 20:00:49,269 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-14 20:00:49,269 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-14 20:00:49,269 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-14 20:00:49,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-14 20:00:49,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-14 20:00:49,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-14 20:00:49,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-14 20:00:49,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-14 20:00:49,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 20:00:49,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 20:00:49,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-14 20:00:49,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-14 20:00:49,272 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 20:00:49,408 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 20:00:49,411 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 20:00:50,010 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 20:00:50,010 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 20:00:50,283 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 20:00:50,284 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-14 20:00:50,284 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:00:50 BoogieIcfgContainer [2024-10-14 20:00:50,284 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 20:00:50,286 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 20:00:50,286 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 20:00:50,289 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 20:00:50,289 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 08:00:48" (1/3) ... [2024-10-14 20:00:50,290 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21466999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:00:50, skipping insertion in model container [2024-10-14 20:00:50,290 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:00:49" (2/3) ... [2024-10-14 20:00:50,291 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21466999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:00:50, skipping insertion in model container [2024-10-14 20:00:50,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:00:50" (3/3) ... [2024-10-14 20:00:50,292 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-5.wvr.c [2024-10-14 20:00:50,309 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 20:00:50,309 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2024-10-14 20:00:50,309 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 20:00:50,386 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-14 20:00:50,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 64 transitions, 142 flow [2024-10-14 20:00:50,457 INFO L124 PetriNetUnfolderBase]: 7/62 cut-off events. [2024-10-14 20:00:50,457 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-14 20:00:50,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 62 events. 7/62 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 179 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2024-10-14 20:00:50,462 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 64 transitions, 142 flow [2024-10-14 20:00:50,465 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 61 transitions, 134 flow [2024-10-14 20:00:50,477 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 20:00:50,485 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;@43c3166c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 20:00:50,485 INFO L334 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2024-10-14 20:00:50,488 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 20:00:50,488 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-14 20:00:50,489 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 20:00:50,489 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 20:00:50,489 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 20:00:50,490 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-14 20:00:50,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 20:00:50,494 INFO L85 PathProgramCache]: Analyzing trace with hash 667349, now seen corresponding path program 1 times [2024-10-14 20:00:50,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 20:00:50,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1640613754] [2024-10-14 20:00:50,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 20:00:50,507 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 20:00:50,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 20:00:50,510 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 20:00:50,511 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 20:00:50,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 20:00:50,580 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 20:00:50,584 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 20:00:50,637 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 20:00:50,652 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 20:00:50,652 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 20:00:50,653 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 20:00:50,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1640613754] [2024-10-14 20:00:50,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1640613754] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 20:00:50,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 20:00:50,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 20:00:50,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224516866] [2024-10-14 20:00:50,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 20:00:50,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 20:00:50,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 20:00:50,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 20:00:50,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 20:00:50,742 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-10-14 20:00:50,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 61 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 20:00:50,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 20:00:50,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-10-14 20:00:50,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 20:00:51,020 INFO L124 PetriNetUnfolderBase]: 218/540 cut-off events. [2024-10-14 20:00:51,021 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2024-10-14 20:00:51,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 917 conditions, 540 events. 218/540 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3143 event pairs, 141 based on Foata normal form. 1/423 useless extension candidates. Maximal degree in co-relation 804. Up to 347 conditions per place. [2024-10-14 20:00:51,031 INFO L140 encePairwiseOnDemand]: 60/64 looper letters, 30 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2024-10-14 20:00:51,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 58 transitions, 192 flow [2024-10-14 20:00:51,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 20:00:51,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 20:00:51,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2024-10-14 20:00:51,044 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6302083333333334 [2024-10-14 20:00:51,045 INFO L175 Difference]: Start difference. First operand has 61 places, 61 transitions, 134 flow. Second operand 3 states and 121 transitions. [2024-10-14 20:00:51,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 58 transitions, 192 flow [2024-10-14 20:00:51,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 58 transitions, 184 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-14 20:00:51,054 INFO L231 Difference]: Finished difference. Result has 56 places, 58 transitions, 124 flow [2024-10-14 20:00:51,057 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=56, PETRI_TRANSITIONS=58} [2024-10-14 20:00:51,061 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, -5 predicate places. [2024-10-14 20:00:51,068 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 58 transitions, 124 flow [2024-10-14 20:00:51,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 20:00:51,070 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 20:00:51,070 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 20:00:51,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2024-10-14 20:00:51,272 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 20:00:51,273 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-14 20:00:51,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 20:00:51,274 INFO L85 PathProgramCache]: Analyzing trace with hash 667350, now seen corresponding path program 1 times [2024-10-14 20:00:51,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 20:00:51,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1681309788] [2024-10-14 20:00:51,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 20:00:51,275 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 20:00:51,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 20:00:51,278 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 20:00:51,279 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 20:00:51,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 20:00:51,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 20:00:51,341 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 20:00:51,355 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 20:00:51,449 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 20:00:51,450 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 20:00:51,450 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 20:00:51,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1681309788] [2024-10-14 20:00:51,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1681309788] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 20:00:51,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 20:00:51,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 20:00:51,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513931181] [2024-10-14 20:00:51,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 20:00:51,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 20:00:51,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 20:00:51,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 20:00:51,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 20:00:51,601 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-10-14 20:00:51,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 58 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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 20:00:51,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 20:00:51,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-10-14 20:00:51,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 20:00:51,883 INFO L124 PetriNetUnfolderBase]: 218/542 cut-off events. [2024-10-14 20:00:51,884 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-10-14 20:00:51,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 904 conditions, 542 events. 218/542 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3142 event pairs, 141 based on Foata normal form. 1/425 useless extension candidates. Maximal degree in co-relation 885. Up to 351 conditions per place. [2024-10-14 20:00:51,888 INFO L140 encePairwiseOnDemand]: 60/64 looper letters, 33 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2024-10-14 20:00:51,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 60 transitions, 198 flow [2024-10-14 20:00:51,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 20:00:51,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 20:00:51,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2024-10-14 20:00:51,890 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2024-10-14 20:00:51,891 INFO L175 Difference]: Start difference. First operand has 56 places, 58 transitions, 124 flow. Second operand 3 states and 124 transitions. [2024-10-14 20:00:51,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 60 transitions, 198 flow [2024-10-14 20:00:51,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 60 transitions, 194 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 20:00:51,893 INFO L231 Difference]: Finished difference. Result has 57 places, 59 transitions, 134 flow [2024-10-14 20:00:51,893 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=57, PETRI_TRANSITIONS=59} [2024-10-14 20:00:51,894 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, -4 predicate places. [2024-10-14 20:00:51,894 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 59 transitions, 134 flow [2024-10-14 20:00:51,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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 20:00:51,894 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 20:00:51,895 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-14 20:00:51,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-10-14 20:00:52,097 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 20:00:52,098 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-14 20:00:52,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 20:00:52,098 INFO L85 PathProgramCache]: Analyzing trace with hash 641344908, now seen corresponding path program 1 times [2024-10-14 20:00:52,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 20:00:52,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1715238438] [2024-10-14 20:00:52,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 20:00:52,100 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 20:00:52,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 20:00:52,104 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 20:00:52,105 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 20:00:52,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 20:00:52,158 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-14 20:00:52,159 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 20:00:52,168 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 20:00:52,344 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 20:00:52,345 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 20:00:52,640 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 20:00:52,641 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 20:00:52,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1715238438] [2024-10-14 20:00:52,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1715238438] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 20:00:52,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 20:00:52,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-14 20:00:52,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145669134] [2024-10-14 20:00:52,642 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 20:00:52,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 20:00:52,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 20:00:52,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 20:00:52,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-14 20:00:53,035 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-10-14 20:00:53,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 59 transitions, 134 flow. Second operand has 10 states, 10 states have (on average 30.0) internal successors, (300), 10 states have internal predecessors, (300), 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 20:00:53,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 20:00:53,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-10-14 20:00:53,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 20:00:53,611 INFO L124 PetriNetUnfolderBase]: 221/551 cut-off events. [2024-10-14 20:00:53,612 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-10-14 20:00:53,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 933 conditions, 551 events. 221/551 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3212 event pairs, 141 based on Foata normal form. 0/433 useless extension candidates. Maximal degree in co-relation 920. Up to 354 conditions per place. [2024-10-14 20:00:53,616 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 33 selfloop transitions, 11 changer transitions 0/69 dead transitions. [2024-10-14 20:00:53,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 69 transitions, 254 flow [2024-10-14 20:00:53,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 20:00:53,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 20:00:53,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 308 transitions. [2024-10-14 20:00:53,620 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5347222222222222 [2024-10-14 20:00:53,620 INFO L175 Difference]: Start difference. First operand has 57 places, 59 transitions, 134 flow. Second operand 9 states and 308 transitions. [2024-10-14 20:00:53,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 69 transitions, 254 flow [2024-10-14 20:00:53,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 69 transitions, 252 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 20:00:53,622 INFO L231 Difference]: Finished difference. Result has 67 places, 69 transitions, 206 flow [2024-10-14 20:00:53,622 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=56, 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=9, PETRI_FLOW=206, PETRI_PLACES=67, PETRI_TRANSITIONS=69} [2024-10-14 20:00:53,623 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 6 predicate places. [2024-10-14 20:00:53,623 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 69 transitions, 206 flow [2024-10-14 20:00:53,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 30.0) internal successors, (300), 10 states have internal predecessors, (300), 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 20:00:53,624 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 20:00:53,624 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 20:00:53,628 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 20:00:53,824 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 20:00:53,825 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-14 20:00:53,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 20:00:53,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1999930623, now seen corresponding path program 1 times [2024-10-14 20:00:53,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 20:00:53,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1480494073] [2024-10-14 20:00:53,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 20:00:53,827 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 20:00:53,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 20:00:53,830 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 20:00:53,831 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 20:00:53,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 20:00:53,884 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 20:00:53,887 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 20:00:53,892 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 20:00:53,917 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 20:00:53,917 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 20:00:53,917 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 20:00:53,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1480494073] [2024-10-14 20:00:53,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1480494073] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 20:00:53,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 20:00:53,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 20:00:53,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232526998] [2024-10-14 20:00:53,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 20:00:53,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 20:00:53,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 20:00:53,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 20:00:53,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 20:00:54,029 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 64 [2024-10-14 20:00:54,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 69 transitions, 206 flow. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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 20:00:54,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 20:00:54,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 64 [2024-10-14 20:00:54,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 20:00:54,182 INFO L124 PetriNetUnfolderBase]: 221/474 cut-off events. [2024-10-14 20:00:54,182 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-10-14 20:00:54,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 878 conditions, 474 events. 221/474 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2291 event pairs, 141 based on Foata normal form. 0/434 useless extension candidates. Maximal degree in co-relation 847. Up to 349 conditions per place. [2024-10-14 20:00:54,186 INFO L140 encePairwiseOnDemand]: 52/64 looper letters, 38 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2024-10-14 20:00:54,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 59 transitions, 272 flow [2024-10-14 20:00:54,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 20:00:54,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 20:00:54,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2024-10-14 20:00:54,189 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4609375 [2024-10-14 20:00:54,189 INFO L175 Difference]: Start difference. First operand has 67 places, 69 transitions, 206 flow. Second operand 4 states and 118 transitions. [2024-10-14 20:00:54,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 59 transitions, 272 flow [2024-10-14 20:00:54,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 59 transitions, 258 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-14 20:00:54,193 INFO L231 Difference]: Finished difference. Result has 59 places, 59 transitions, 182 flow [2024-10-14 20:00:54,193 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=56, 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=182, PETRI_PLACES=59, PETRI_TRANSITIONS=59} [2024-10-14 20:00:54,194 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, -2 predicate places. [2024-10-14 20:00:54,194 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 59 transitions, 182 flow [2024-10-14 20:00:54,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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 20:00:54,194 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 20:00:54,194 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 20:00:54,199 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 20:00:54,398 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 20:00:54,399 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-14 20:00:54,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 20:00:54,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1999930622, now seen corresponding path program 1 times [2024-10-14 20:00:54,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 20:00:54,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [65663061] [2024-10-14 20:00:54,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 20:00:54,400 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 20:00:54,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 20:00:54,401 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 20:00:54,403 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 20:00:54,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 20:00:54,458 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-14 20:00:54,459 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 20:00:54,549 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 20:00:54,550 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 20:00:54,678 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 35 treesize of output 31 [2024-10-14 20:00:54,745 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 20:00:54,745 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 20:00:54,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [65663061] [2024-10-14 20:00:54,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [65663061] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 20:00:54,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 20:00:54,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2024-10-14 20:00:54,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23456959] [2024-10-14 20:00:54,746 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 20:00:54,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 20:00:54,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 20:00:54,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 20:00:54,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-14 20:00:55,266 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-10-14 20:00:55,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 59 transitions, 182 flow. Second operand has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 20:00:55,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 20:00:55,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-10-14 20:00:55,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 20:00:55,793 INFO L124 PetriNetUnfolderBase]: 513/928 cut-off events. [2024-10-14 20:00:55,793 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-10-14 20:00:55,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1763 conditions, 928 events. 513/928 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4777 event pairs, 169 based on Foata normal form. 0/789 useless extension candidates. Maximal degree in co-relation 1731. Up to 457 conditions per place. [2024-10-14 20:00:55,799 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 62 selfloop transitions, 8 changer transitions 0/85 dead transitions. [2024-10-14 20:00:55,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 85 transitions, 377 flow [2024-10-14 20:00:55,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 20:00:55,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 20:00:55,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 239 transitions. [2024-10-14 20:00:55,802 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6223958333333334 [2024-10-14 20:00:55,802 INFO L175 Difference]: Start difference. First operand has 59 places, 59 transitions, 182 flow. Second operand 6 states and 239 transitions. [2024-10-14 20:00:55,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 85 transitions, 377 flow [2024-10-14 20:00:55,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 85 transitions, 371 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 20:00:55,808 INFO L231 Difference]: Finished difference. Result has 63 places, 60 transitions, 203 flow [2024-10-14 20:00:55,810 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=203, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2024-10-14 20:00:55,810 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 2 predicate places. [2024-10-14 20:00:55,811 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 60 transitions, 203 flow [2024-10-14 20:00:55,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 20:00:55,811 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 20:00:55,811 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 20:00:55,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2024-10-14 20:00:56,011 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 20:00:56,012 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-14 20:00:56,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 20:00:56,013 INFO L85 PathProgramCache]: Analyzing trace with hash -2082923706, now seen corresponding path program 1 times [2024-10-14 20:00:56,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 20:00:56,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [656520560] [2024-10-14 20:00:56,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 20:00:56,013 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 20:00:56,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 20:00:56,015 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 20:00:56,016 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 20:00:56,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 20:00:56,079 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-14 20:00:56,080 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 20:00:56,104 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 20:00:56,359 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 20:00:56,360 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 20:00:57,013 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 20:00:57,014 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 20:00:57,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [656520560] [2024-10-14 20:00:57,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [656520560] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 20:00:57,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 20:00:57,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2024-10-14 20:00:57,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635955466] [2024-10-14 20:00:57,015 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 20:00:57,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-14 20:00:57,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 20:00:57,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-14 20:00:57,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-10-14 20:01:00,191 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 64 [2024-10-14 20:01:00,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 60 transitions, 203 flow. Second operand has 11 states, 11 states have (on average 29.818181818181817) internal successors, (328), 11 states have internal predecessors, (328), 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 20:01:00,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 20:01:00,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 64 [2024-10-14 20:01:00,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 20:01:02,321 INFO L124 PetriNetUnfolderBase]: 1285/2545 cut-off events. [2024-10-14 20:01:02,321 INFO L125 PetriNetUnfolderBase]: For 159/159 co-relation queries the response was YES. [2024-10-14 20:01:02,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4964 conditions, 2545 events. 1285/2545 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 16274 event pairs, 697 based on Foata normal form. 0/2275 useless extension candidates. Maximal degree in co-relation 3348. Up to 705 conditions per place. [2024-10-14 20:01:02,354 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 128 selfloop transitions, 16 changer transitions 0/158 dead transitions. [2024-10-14 20:01:02,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 158 transitions, 707 flow [2024-10-14 20:01:02,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 20:01:02,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-14 20:01:02,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 422 transitions. [2024-10-14 20:01:02,357 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.659375 [2024-10-14 20:01:02,357 INFO L175 Difference]: Start difference. First operand has 63 places, 60 transitions, 203 flow. Second operand 10 states and 422 transitions. [2024-10-14 20:01:02,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 158 transitions, 707 flow [2024-10-14 20:01:02,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 158 transitions, 698 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 20:01:02,361 INFO L231 Difference]: Finished difference. Result has 71 places, 66 transitions, 264 flow [2024-10-14 20:01:02,361 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=264, PETRI_PLACES=71, PETRI_TRANSITIONS=66} [2024-10-14 20:01:02,362 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 10 predicate places. [2024-10-14 20:01:02,362 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 66 transitions, 264 flow [2024-10-14 20:01:02,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 29.818181818181817) internal successors, (328), 11 states have internal predecessors, (328), 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 20:01:02,362 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 20:01:02,363 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 20:01:02,367 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 20:01:02,563 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 20:01:02,563 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-14 20:01:02,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 20:01:02,564 INFO L85 PathProgramCache]: Analyzing trace with hash -2126774872, now seen corresponding path program 1 times [2024-10-14 20:01:02,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 20:01:02,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [77709775] [2024-10-14 20:01:02,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 20:01:02,565 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 20:01:02,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 20:01:02,566 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 20:01:02,567 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 20:01:02,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 20:01:02,617 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-14 20:01:02,618 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 20:01:02,715 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 20:01:02,716 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 20:01:02,846 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 35 treesize of output 31 [2024-10-14 20:01:02,926 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 20:01:02,926 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 20:01:02,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [77709775] [2024-10-14 20:01:02,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [77709775] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 20:01:02,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 20:01:02,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2024-10-14 20:01:02,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283236684] [2024-10-14 20:01:02,927 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 20:01:02,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 20:01:02,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 20:01:02,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 20:01:02,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-14 20:01:03,151 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 64 [2024-10-14 20:01:03,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 66 transitions, 264 flow. Second operand has 8 states, 8 states have (on average 23.5) internal successors, (188), 8 states have internal predecessors, (188), 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 20:01:03,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 20:01:03,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 64 [2024-10-14 20:01:03,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 20:01:04,023 INFO L124 PetriNetUnfolderBase]: 2777/4625 cut-off events. [2024-10-14 20:01:04,024 INFO L125 PetriNetUnfolderBase]: For 2145/2185 co-relation queries the response was YES. [2024-10-14 20:01:04,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10600 conditions, 4625 events. 2777/4625 cut-off events. For 2145/2185 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 26979 event pairs, 558 based on Foata normal form. 0/4045 useless extension candidates. Maximal degree in co-relation 8159. Up to 3178 conditions per place. [2024-10-14 20:01:04,051 INFO L140 encePairwiseOnDemand]: 51/64 looper letters, 74 selfloop transitions, 12 changer transitions 0/93 dead transitions. [2024-10-14 20:01:04,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 93 transitions, 528 flow [2024-10-14 20:01:04,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 20:01:04,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 20:01:04,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 197 transitions. [2024-10-14 20:01:04,054 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5130208333333334 [2024-10-14 20:01:04,054 INFO L175 Difference]: Start difference. First operand has 71 places, 66 transitions, 264 flow. Second operand 6 states and 197 transitions. [2024-10-14 20:01:04,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 93 transitions, 528 flow [2024-10-14 20:01:04,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 93 transitions, 520 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 20:01:04,066 INFO L231 Difference]: Finished difference. Result has 74 places, 71 transitions, 319 flow [2024-10-14 20:01:04,067 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=319, PETRI_PLACES=74, PETRI_TRANSITIONS=71} [2024-10-14 20:01:04,068 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 13 predicate places. [2024-10-14 20:01:04,068 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 71 transitions, 319 flow [2024-10-14 20:01:04,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.5) internal successors, (188), 8 states have internal predecessors, (188), 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 20:01:04,069 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 20:01:04,069 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 20:01:04,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2024-10-14 20:01:04,270 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 20:01:04,270 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-14 20:01:04,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 20:01:04,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1505510862, now seen corresponding path program 1 times [2024-10-14 20:01:04,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 20:01:04,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [646994273] [2024-10-14 20:01:04,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 20:01:04,271 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 20:01:04,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 20:01:04,274 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 20:01:04,275 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 20:01:04,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 20:01:04,331 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-14 20:01:04,332 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 20:01:04,363 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 20:01:04,572 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 20:01:04,573 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 20:01:05,298 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 20:01:05,299 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 20:01:05,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [646994273] [2024-10-14 20:01:05,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [646994273] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 20:01:05,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 20:01:05,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2024-10-14 20:01:05,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294691325] [2024-10-14 20:01:05,300 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 20:01:05,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-14 20:01:05,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 20:01:05,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-14 20:01:05,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-10-14 20:01:07,135 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 64 [2024-10-14 20:01:07,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 71 transitions, 319 flow. Second operand has 11 states, 11 states have (on average 22.0) internal successors, (242), 11 states have internal predecessors, (242), 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 20:01:07,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 20:01:07,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 64 [2024-10-14 20:01:07,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 20:01:08,954 INFO L124 PetriNetUnfolderBase]: 2347/3954 cut-off events. [2024-10-14 20:01:08,954 INFO L125 PetriNetUnfolderBase]: For 1936/2001 co-relation queries the response was YES. [2024-10-14 20:01:08,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9695 conditions, 3954 events. 2347/3954 cut-off events. For 1936/2001 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 21905 event pairs, 1167 based on Foata normal form. 0/3696 useless extension candidates. Maximal degree in co-relation 7733. Up to 1431 conditions per place. [2024-10-14 20:01:08,974 INFO L140 encePairwiseOnDemand]: 41/64 looper letters, 103 selfloop transitions, 38 changer transitions 0/147 dead transitions. [2024-10-14 20:01:08,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 147 transitions, 839 flow [2024-10-14 20:01:08,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 20:01:08,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-14 20:01:08,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 338 transitions. [2024-10-14 20:01:08,977 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.528125 [2024-10-14 20:01:08,978 INFO L175 Difference]: Start difference. First operand has 74 places, 71 transitions, 319 flow. Second operand 10 states and 338 transitions. [2024-10-14 20:01:08,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 147 transitions, 839 flow [2024-10-14 20:01:08,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 147 transitions, 814 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-14 20:01:08,983 INFO L231 Difference]: Finished difference. Result has 81 places, 99 transitions, 560 flow [2024-10-14 20:01:08,983 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=560, PETRI_PLACES=81, PETRI_TRANSITIONS=99} [2024-10-14 20:01:08,985 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 20 predicate places. [2024-10-14 20:01:08,987 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 99 transitions, 560 flow [2024-10-14 20:01:08,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.0) internal successors, (242), 11 states have internal predecessors, (242), 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 20:01:08,987 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 20:01:08,987 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-14 20:01:08,993 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-10-14 20:01:09,188 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 20:01:09,188 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-14 20:01:09,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 20:01:09,189 INFO L85 PathProgramCache]: Analyzing trace with hash -350320466, now seen corresponding path program 2 times [2024-10-14 20:01:09,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 20:01:09,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1314200042] [2024-10-14 20:01:09,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 20:01:09,190 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 20:01:09,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 20:01:09,191 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 20:01:09,192 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 20:01:09,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 20:01:09,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 20:01:09,258 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 20:01:09,260 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 20:01:09,269 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 20:01:09,507 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 20:01:09,507 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 20:01:10,102 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 20:01:10,102 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 20:01:10,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1314200042] [2024-10-14 20:01:10,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1314200042] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 20:01:10,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 20:01:10,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-14 20:01:10,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203564864] [2024-10-14 20:01:10,103 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 20:01:10,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-14 20:01:10,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 20:01:10,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-14 20:01:10,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-14 20:01:11,287 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-10-14 20:01:11,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 99 transitions, 560 flow. Second operand has 14 states, 14 states have (on average 30.571428571428573) internal successors, (428), 14 states have internal predecessors, (428), 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 20:01:11,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 20:01:11,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-10-14 20:01:11,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 20:01:13,424 INFO L124 PetriNetUnfolderBase]: 2162/3730 cut-off events. [2024-10-14 20:01:13,424 INFO L125 PetriNetUnfolderBase]: For 2660/2694 co-relation queries the response was YES. [2024-10-14 20:01:13,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10398 conditions, 3730 events. 2162/3730 cut-off events. For 2660/2694 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 21686 event pairs, 1566 based on Foata normal form. 6/3684 useless extension candidates. Maximal degree in co-relation 8203. Up to 3243 conditions per place. [2024-10-14 20:01:13,449 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 73 selfloop transitions, 29 changer transitions 0/117 dead transitions. [2024-10-14 20:01:13,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 117 transitions, 944 flow [2024-10-14 20:01:13,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-14 20:01:13,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-14 20:01:13,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 677 transitions. [2024-10-14 20:01:13,452 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5037202380952381 [2024-10-14 20:01:13,452 INFO L175 Difference]: Start difference. First operand has 81 places, 99 transitions, 560 flow. Second operand 21 states and 677 transitions. [2024-10-14 20:01:13,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 117 transitions, 944 flow [2024-10-14 20:01:13,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 117 transitions, 919 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-14 20:01:13,462 INFO L231 Difference]: Finished difference. Result has 103 places, 117 transitions, 803 flow [2024-10-14 20:01:13,462 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=803, PETRI_PLACES=103, PETRI_TRANSITIONS=117} [2024-10-14 20:01:13,462 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 42 predicate places. [2024-10-14 20:01:13,463 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 117 transitions, 803 flow [2024-10-14 20:01:13,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 30.571428571428573) internal successors, (428), 14 states have internal predecessors, (428), 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 20:01:13,463 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 20:01:13,463 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1] [2024-10-14 20:01:13,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-10-14 20:01:13,664 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 20:01:13,664 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-14 20:01:13,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 20:01:13,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1463770468, now seen corresponding path program 2 times [2024-10-14 20:01:13,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 20:01:13,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [187924104] [2024-10-14 20:01:13,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 20:01:13,665 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 20:01:13,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 20:01:13,666 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 20:01:13,669 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 20:01:13,717 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 20:01:13,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 20:01:13,719 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 20:01:13,720 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 20:01:13,728 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 20:01:13,927 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-14 20:01:13,927 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 20:01:14,513 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-14 20:01:14,513 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 20:01:14,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [187924104] [2024-10-14 20:01:14,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [187924104] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 20:01:14,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 20:01:14,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2024-10-14 20:01:14,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413813642] [2024-10-14 20:01:14,514 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 20:01:14,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 20:01:14,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 20:01:14,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 20:01:14,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-14 20:01:16,411 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-10-14 20:01:16,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 117 transitions, 803 flow. Second operand has 8 states, 8 states have (on average 31.5) internal successors, (252), 8 states have internal predecessors, (252), 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 20:01:16,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 20:01:16,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-10-14 20:01:16,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 20:01:17,189 INFO L124 PetriNetUnfolderBase]: 2114/3614 cut-off events. [2024-10-14 20:01:17,189 INFO L125 PetriNetUnfolderBase]: For 2364/2364 co-relation queries the response was YES. [2024-10-14 20:01:17,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10181 conditions, 3614 events. 2114/3614 cut-off events. For 2364/2364 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 21132 event pairs, 1116 based on Foata normal form. 52/3628 useless extension candidates. Maximal degree in co-relation 10115. Up to 2416 conditions per place. [2024-10-14 20:01:17,203 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 134 selfloop transitions, 20 changer transitions 0/169 dead transitions. [2024-10-14 20:01:17,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 169 transitions, 1374 flow [2024-10-14 20:01:17,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 20:01:17,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 20:01:17,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 198 transitions. [2024-10-14 20:01:17,205 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.61875 [2024-10-14 20:01:17,205 INFO L175 Difference]: Start difference. First operand has 103 places, 117 transitions, 803 flow. Second operand 5 states and 198 transitions. [2024-10-14 20:01:17,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 169 transitions, 1374 flow [2024-10-14 20:01:17,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 169 transitions, 1280 flow, removed 33 selfloop flow, removed 10 redundant places. [2024-10-14 20:01:17,243 INFO L231 Difference]: Finished difference. Result has 96 places, 116 transitions, 741 flow [2024-10-14 20:01:17,243 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=701, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=741, PETRI_PLACES=96, PETRI_TRANSITIONS=116} [2024-10-14 20:01:17,243 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 35 predicate places. [2024-10-14 20:01:17,244 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 116 transitions, 741 flow [2024-10-14 20:01:17,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.5) internal successors, (252), 8 states have internal predecessors, (252), 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 20:01:17,244 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 20:01:17,244 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 20:01:17,248 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 (11)] Ended with exit code 0 [2024-10-14 20:01:17,445 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 20:01:17,446 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-14 20:01:17,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 20:01:17,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1067826132, now seen corresponding path program 2 times [2024-10-14 20:01:17,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 20:01:17,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1217648574] [2024-10-14 20:01:17,446 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 20:01:17,447 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 20:01:17,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 20:01:17,448 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 20:01:17,449 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 20:01:17,513 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 20:01:17,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 20:01:17,517 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 20:01:17,518 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 20:01:17,531 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 20:01:17,738 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-14 20:01:17,738 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 20:01:17,739 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 20:01:17,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1217648574] [2024-10-14 20:01:17,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1217648574] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 20:01:17,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 20:01:17,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 20:01:17,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853201536] [2024-10-14 20:01:17,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 20:01:17,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 20:01:17,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 20:01:17,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 20:01:17,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 20:01:18,039 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 64 [2024-10-14 20:01:18,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 116 transitions, 741 flow. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 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 20:01:18,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 20:01:18,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 64 [2024-10-14 20:01:18,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 20:01:18,546 INFO L124 PetriNetUnfolderBase]: 2114/3522 cut-off events. [2024-10-14 20:01:18,546 INFO L125 PetriNetUnfolderBase]: For 3430/3430 co-relation queries the response was YES. [2024-10-14 20:01:18,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10194 conditions, 3522 events. 2114/3522 cut-off events. For 3430/3430 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 19463 event pairs, 684 based on Foata normal form. 144/3614 useless extension candidates. Maximal degree in co-relation 10138. Up to 1686 conditions per place. [2024-10-14 20:01:18,559 INFO L140 encePairwiseOnDemand]: 43/64 looper letters, 61 selfloop transitions, 53 changer transitions 0/120 dead transitions. [2024-10-14 20:01:18,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 120 transitions, 980 flow [2024-10-14 20:01:18,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 20:01:18,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 20:01:18,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 152 transitions. [2024-10-14 20:01:18,560 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-10-14 20:01:18,561 INFO L175 Difference]: Start difference. First operand has 96 places, 116 transitions, 741 flow. Second operand 5 states and 152 transitions. [2024-10-14 20:01:18,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 120 transitions, 980 flow [2024-10-14 20:01:18,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 120 transitions, 894 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-14 20:01:18,568 INFO L231 Difference]: Finished difference. Result has 85 places, 107 transitions, 715 flow [2024-10-14 20:01:18,568 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=715, PETRI_PLACES=85, PETRI_TRANSITIONS=107} [2024-10-14 20:01:18,568 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 24 predicate places. [2024-10-14 20:01:18,569 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 107 transitions, 715 flow [2024-10-14 20:01:18,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 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 20:01:18,569 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 20:01:18,569 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 20:01:18,573 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 20:01:18,772 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 20:01:18,773 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-14 20:01:18,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 20:01:18,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1968742034, now seen corresponding path program 1 times [2024-10-14 20:01:18,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 20:01:18,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1922632728] [2024-10-14 20:01:18,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 20:01:18,773 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 20:01:18,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 20:01:18,775 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 20:01:18,775 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 20:01:18,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 20:01:18,837 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 20:01:18,838 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 20:01:18,917 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 20:01:18,917 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 20:01:18,917 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 20:01:18,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1922632728] [2024-10-14 20:01:18,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1922632728] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 20:01:18,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 20:01:18,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 20:01:18,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137474548] [2024-10-14 20:01:18,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 20:01:18,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 20:01:18,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 20:01:18,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 20:01:18,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 20:01:18,968 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 64 [2024-10-14 20:01:18,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 107 transitions, 715 flow. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 20:01:18,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 20:01:18,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 64 [2024-10-14 20:01:18,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 20:01:19,275 INFO L124 PetriNetUnfolderBase]: 2139/3517 cut-off events. [2024-10-14 20:01:19,275 INFO L125 PetriNetUnfolderBase]: For 2475/2475 co-relation queries the response was YES. [2024-10-14 20:01:19,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10149 conditions, 3517 events. 2139/3517 cut-off events. For 2475/2475 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 19104 event pairs, 544 based on Foata normal form. 3/3467 useless extension candidates. Maximal degree in co-relation 10095. Up to 2642 conditions per place. [2024-10-14 20:01:19,290 INFO L140 encePairwiseOnDemand]: 56/64 looper letters, 127 selfloop transitions, 17 changer transitions 1/151 dead transitions. [2024-10-14 20:01:19,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 151 transitions, 1248 flow [2024-10-14 20:01:19,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 20:01:19,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 20:01:19,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2024-10-14 20:01:19,292 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7552083333333334 [2024-10-14 20:01:19,292 INFO L175 Difference]: Start difference. First operand has 85 places, 107 transitions, 715 flow. Second operand 3 states and 145 transitions. [2024-10-14 20:01:19,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 151 transitions, 1248 flow [2024-10-14 20:01:19,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 151 transitions, 1088 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-14 20:01:19,302 INFO L231 Difference]: Finished difference. Result has 84 places, 123 transitions, 788 flow [2024-10-14 20:01:19,302 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=788, PETRI_PLACES=84, PETRI_TRANSITIONS=123} [2024-10-14 20:01:19,303 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 23 predicate places. [2024-10-14 20:01:19,303 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 123 transitions, 788 flow [2024-10-14 20:01:19,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 20:01:19,303 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 20:01:19,304 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 20:01:19,308 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 20:01:19,504 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 20:01:19,504 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-14 20:01:19,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 20:01:19,505 INFO L85 PathProgramCache]: Analyzing trace with hash 391690304, now seen corresponding path program 1 times [2024-10-14 20:01:19,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 20:01:19,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [846507166] [2024-10-14 20:01:19,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 20:01:19,505 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 20:01:19,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 20:01:19,508 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 20:01:19,509 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 20:01:19,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 20:01:19,570 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 20:01:19,571 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 20:01:19,593 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 20:01:19,594 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 20:01:19,594 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 20:01:19,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [846507166] [2024-10-14 20:01:19,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [846507166] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 20:01:19,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 20:01:19,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 20:01:19,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56925366] [2024-10-14 20:01:19,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 20:01:19,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 20:01:19,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 20:01:19,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 20:01:19,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 20:01:19,602 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 64 [2024-10-14 20:01:19,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 123 transitions, 788 flow. Second operand has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 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 20:01:19,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 20:01:19,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 64 [2024-10-14 20:01:19,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 20:01:20,116 INFO L124 PetriNetUnfolderBase]: 2342/3824 cut-off events. [2024-10-14 20:01:20,116 INFO L125 PetriNetUnfolderBase]: For 2169/2169 co-relation queries the response was YES. [2024-10-14 20:01:20,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10839 conditions, 3824 events. 2342/3824 cut-off events. For 2169/2169 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 21509 event pairs, 840 based on Foata normal form. 27/3848 useless extension candidates. Maximal degree in co-relation 10785. Up to 2134 conditions per place. [2024-10-14 20:01:20,132 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 232 selfloop transitions, 10 changer transitions 0/245 dead transitions. [2024-10-14 20:01:20,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 245 transitions, 1884 flow [2024-10-14 20:01:20,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 20:01:20,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 20:01:20,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 227 transitions. [2024-10-14 20:01:20,133 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.709375 [2024-10-14 20:01:20,133 INFO L175 Difference]: Start difference. First operand has 84 places, 123 transitions, 788 flow. Second operand 5 states and 227 transitions. [2024-10-14 20:01:20,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 245 transitions, 1884 flow [2024-10-14 20:01:20,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 245 transitions, 1840 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 20:01:20,143 INFO L231 Difference]: Finished difference. Result has 90 places, 126 transitions, 828 flow [2024-10-14 20:01:20,144 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=828, PETRI_PLACES=90, PETRI_TRANSITIONS=126} [2024-10-14 20:01:20,144 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 29 predicate places. [2024-10-14 20:01:20,145 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 126 transitions, 828 flow [2024-10-14 20:01:20,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 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 20:01:20,145 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 20:01:20,145 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 20:01:20,149 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2024-10-14 20:01:20,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 20:01:20,346 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-14 20:01:20,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 20:01:20,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1122483587, now seen corresponding path program 1 times [2024-10-14 20:01:20,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 20:01:20,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [688886901] [2024-10-14 20:01:20,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 20:01:20,347 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 20:01:20,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 20:01:20,348 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 20:01:20,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-10-14 20:01:20,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 20:01:20,430 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 20:01:20,431 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 20:01:20,468 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 20:01:20,468 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 20:01:20,469 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 20:01:20,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [688886901] [2024-10-14 20:01:20,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [688886901] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 20:01:20,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 20:01:20,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 20:01:20,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884865987] [2024-10-14 20:01:20,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 20:01:20,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 20:01:20,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 20:01:20,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 20:01:20,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 20:01:20,490 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 64 [2024-10-14 20:01:20,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 126 transitions, 828 flow. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 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 20:01:20,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 20:01:20,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 64 [2024-10-14 20:01:20,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 20:01:21,147 INFO L124 PetriNetUnfolderBase]: 2825/4903 cut-off events. [2024-10-14 20:01:21,147 INFO L125 PetriNetUnfolderBase]: For 5749/5749 co-relation queries the response was YES. [2024-10-14 20:01:21,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14951 conditions, 4903 events. 2825/4903 cut-off events. For 5749/5749 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 29453 event pairs, 787 based on Foata normal form. 84/4969 useless extension candidates. Maximal degree in co-relation 14894. Up to 1846 conditions per place. [2024-10-14 20:01:21,173 INFO L140 encePairwiseOnDemand]: 54/64 looper letters, 210 selfloop transitions, 50 changer transitions 0/266 dead transitions. [2024-10-14 20:01:21,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 266 transitions, 2125 flow [2024-10-14 20:01:21,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 20:01:21,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 20:01:21,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2024-10-14 20:01:21,175 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6852678571428571 [2024-10-14 20:01:21,175 INFO L175 Difference]: Start difference. First operand has 90 places, 126 transitions, 828 flow. Second operand 7 states and 307 transitions. [2024-10-14 20:01:21,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 266 transitions, 2125 flow [2024-10-14 20:01:21,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 266 transitions, 2069 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 20:01:21,187 INFO L231 Difference]: Finished difference. Result has 99 places, 147 transitions, 1184 flow [2024-10-14 20:01:21,187 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=805, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1184, PETRI_PLACES=99, PETRI_TRANSITIONS=147} [2024-10-14 20:01:21,187 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 38 predicate places. [2024-10-14 20:01:21,188 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 147 transitions, 1184 flow [2024-10-14 20:01:21,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 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 20:01:21,188 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 20:01:21,188 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 20:01:21,192 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2024-10-14 20:01:21,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 20:01:21,392 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-14 20:01:21,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 20:01:21,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1328117010, now seen corresponding path program 2 times [2024-10-14 20:01:21,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 20:01:21,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [796359939] [2024-10-14 20:01:21,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 20:01:21,393 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 20:01:21,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 20:01:21,394 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 20:01:21,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2024-10-14 20:01:21,445 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 20:01:21,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 20:01:21,446 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 20:01:21,447 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 20:01:21,475 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 20:01:21,476 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 20:01:21,476 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 20:01:21,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [796359939] [2024-10-14 20:01:21,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [796359939] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 20:01:21,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 20:01:21,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 20:01:21,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287696947] [2024-10-14 20:01:21,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 20:01:21,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 20:01:21,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 20:01:21,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 20:01:21,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 20:01:21,488 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-10-14 20:01:21,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 147 transitions, 1184 flow. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 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 20:01:21,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 20:01:21,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-10-14 20:01:21,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 20:01:22,310 INFO L124 PetriNetUnfolderBase]: 3857/6277 cut-off events. [2024-10-14 20:01:22,310 INFO L125 PetriNetUnfolderBase]: For 12309/12309 co-relation queries the response was YES. [2024-10-14 20:01:22,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22221 conditions, 6277 events. 3857/6277 cut-off events. For 12309/12309 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 36840 event pairs, 1367 based on Foata normal form. 60/6337 useless extension candidates. Maximal degree in co-relation 22160. Up to 2983 conditions per place. [2024-10-14 20:01:22,338 INFO L140 encePairwiseOnDemand]: 49/64 looper letters, 236 selfloop transitions, 52 changer transitions 3/293 dead transitions. [2024-10-14 20:01:22,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 293 transitions, 2714 flow [2024-10-14 20:01:22,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 20:01:22,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 20:01:22,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 270 transitions. [2024-10-14 20:01:22,340 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.703125 [2024-10-14 20:01:22,340 INFO L175 Difference]: Start difference. First operand has 99 places, 147 transitions, 1184 flow. Second operand 6 states and 270 transitions. [2024-10-14 20:01:22,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 293 transitions, 2714 flow [2024-10-14 20:01:22,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 293 transitions, 2607 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-10-14 20:01:22,379 INFO L231 Difference]: Finished difference. Result has 106 places, 182 transitions, 1756 flow [2024-10-14 20:01:22,380 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=1122, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1756, PETRI_PLACES=106, PETRI_TRANSITIONS=182} [2024-10-14 20:01:22,380 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 45 predicate places. [2024-10-14 20:01:22,380 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 182 transitions, 1756 flow [2024-10-14 20:01:22,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 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 20:01:22,381 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 20:01:22,381 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 20:01:22,385 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2024-10-14 20:01:22,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 20:01:22,581 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-14 20:01:22,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 20:01:22,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1017754465, now seen corresponding path program 2 times [2024-10-14 20:01:22,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 20:01:22,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1270230175] [2024-10-14 20:01:22,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 20:01:22,582 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 20:01:22,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 20:01:22,585 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 20:01:22,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2024-10-14 20:01:22,641 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 20:01:22,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 20:01:22,642 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 20:01:22,643 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 20:01:22,687 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 20:01:22,687 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 20:01:22,687 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 20:01:22,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1270230175] [2024-10-14 20:01:22,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1270230175] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 20:01:22,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 20:01:22,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 20:01:22,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447528293] [2024-10-14 20:01:22,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 20:01:22,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 20:01:22,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 20:01:22,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 20:01:22,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 20:01:22,711 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 64 [2024-10-14 20:01:22,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 182 transitions, 1756 flow. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 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 20:01:22,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 20:01:22,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 64 [2024-10-14 20:01:22,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 20:01:23,362 INFO L124 PetriNetUnfolderBase]: 3357/5909 cut-off events. [2024-10-14 20:01:23,362 INFO L125 PetriNetUnfolderBase]: For 20651/20681 co-relation queries the response was YES. [2024-10-14 20:01:23,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23684 conditions, 5909 events. 3357/5909 cut-off events. For 20651/20681 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 38150 event pairs, 1305 based on Foata normal form. 120/6019 useless extension candidates. Maximal degree in co-relation 23620. Up to 3309 conditions per place. [2024-10-14 20:01:23,440 INFO L140 encePairwiseOnDemand]: 54/64 looper letters, 196 selfloop transitions, 96 changer transitions 2/301 dead transitions. [2024-10-14 20:01:23,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 301 transitions, 3153 flow [2024-10-14 20:01:23,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 20:01:23,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 20:01:23,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 278 transitions. [2024-10-14 20:01:23,442 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7239583333333334 [2024-10-14 20:01:23,442 INFO L175 Difference]: Start difference. First operand has 106 places, 182 transitions, 1756 flow. Second operand 6 states and 278 transitions. [2024-10-14 20:01:23,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 301 transitions, 3153 flow [2024-10-14 20:01:23,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 301 transitions, 3113 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-14 20:01:23,476 INFO L231 Difference]: Finished difference. Result has 114 places, 206 transitions, 2388 flow [2024-10-14 20:01:23,476 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=1726, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2388, PETRI_PLACES=114, PETRI_TRANSITIONS=206} [2024-10-14 20:01:23,477 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 53 predicate places. [2024-10-14 20:01:23,477 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 206 transitions, 2388 flow [2024-10-14 20:01:23,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 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 20:01:23,477 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 20:01:23,477 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 20:01:23,483 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2024-10-14 20:01:23,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 20:01:23,678 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-14 20:01:23,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 20:01:23,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1141052828, now seen corresponding path program 3 times [2024-10-14 20:01:23,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 20:01:23,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1171185890] [2024-10-14 20:01:23,679 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 20:01:23,679 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 20:01:23,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 20:01:23,680 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 20:01:23,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2024-10-14 20:01:23,737 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-10-14 20:01:23,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 20:01:23,740 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 20:01:23,741 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 20:01:23,784 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 20:01:23,785 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 20:01:23,785 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 20:01:23,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1171185890] [2024-10-14 20:01:23,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1171185890] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 20:01:23,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 20:01:23,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 20:01:23,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119005937] [2024-10-14 20:01:23,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 20:01:23,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 20:01:23,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 20:01:23,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 20:01:23,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-14 20:01:23,807 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 64 [2024-10-14 20:01:23,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 206 transitions, 2388 flow. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 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 20:01:23,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 20:01:23,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 64 [2024-10-14 20:01:23,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 20:01:24,563 INFO L124 PetriNetUnfolderBase]: 3355/5708 cut-off events. [2024-10-14 20:01:24,563 INFO L125 PetriNetUnfolderBase]: For 24787/24865 co-relation queries the response was YES. [2024-10-14 20:01:24,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23858 conditions, 5708 events. 3355/5708 cut-off events. For 24787/24865 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 35202 event pairs, 1146 based on Foata normal form. 162/5843 useless extension candidates. Maximal degree in co-relation 23790. Up to 2485 conditions per place. [2024-10-14 20:01:24,599 INFO L140 encePairwiseOnDemand]: 54/64 looper letters, 232 selfloop transitions, 55 changer transitions 0/294 dead transitions. [2024-10-14 20:01:24,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 294 transitions, 3290 flow [2024-10-14 20:01:24,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 20:01:24,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 20:01:24,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 270 transitions. [2024-10-14 20:01:24,600 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.703125 [2024-10-14 20:01:24,600 INFO L175 Difference]: Start difference. First operand has 114 places, 206 transitions, 2388 flow. Second operand 6 states and 270 transitions. [2024-10-14 20:01:24,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 294 transitions, 3290 flow [2024-10-14 20:01:24,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 294 transitions, 3266 flow, removed 12 selfloop flow, removed 0 redundant places. [2024-10-14 20:01:24,637 INFO L231 Difference]: Finished difference. Result has 122 places, 201 transitions, 2399 flow [2024-10-14 20:01:24,638 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=2148, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2399, PETRI_PLACES=122, PETRI_TRANSITIONS=201} [2024-10-14 20:01:24,638 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 61 predicate places. [2024-10-14 20:01:24,638 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 201 transitions, 2399 flow [2024-10-14 20:01:24,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 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 20:01:24,639 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 20:01:24,639 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 20:01:24,644 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2024-10-14 20:01:24,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 20:01:24,842 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-14 20:01:24,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 20:01:24,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1753859258, now seen corresponding path program 4 times [2024-10-14 20:01:24,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 20:01:24,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [132427144] [2024-10-14 20:01:24,843 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 20:01:24,843 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 20:01:24,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 20:01:24,845 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 20:01:24,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2024-10-14 20:01:24,915 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 20:01:24,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 20:01:24,917 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 20:01:24,918 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 20:01:24,955 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 20:01:24,955 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 20:01:24,956 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 20:01:24,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [132427144] [2024-10-14 20:01:24,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [132427144] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 20:01:24,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 20:01:24,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 20:01:24,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908874791] [2024-10-14 20:01:24,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 20:01:24,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 20:01:24,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 20:01:24,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 20:01:24,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-14 20:01:24,968 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-10-14 20:01:24,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 201 transitions, 2399 flow. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 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 20:01:24,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 20:01:24,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-10-14 20:01:24,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 20:01:25,857 INFO L124 PetriNetUnfolderBase]: 3626/5875 cut-off events. [2024-10-14 20:01:25,857 INFO L125 PetriNetUnfolderBase]: For 31166/31166 co-relation queries the response was YES. [2024-10-14 20:01:25,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26468 conditions, 5875 events. 3626/5875 cut-off events. For 31166/31166 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 33215 event pairs, 1518 based on Foata normal form. 45/5920 useless extension candidates. Maximal degree in co-relation 26396. Up to 3967 conditions per place. [2024-10-14 20:01:25,885 INFO L140 encePairwiseOnDemand]: 52/64 looper letters, 182 selfloop transitions, 91 changer transitions 1/276 dead transitions. [2024-10-14 20:01:25,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 276 transitions, 3407 flow [2024-10-14 20:01:25,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 20:01:25,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 20:01:25,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 249 transitions. [2024-10-14 20:01:25,887 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6484375 [2024-10-14 20:01:25,887 INFO L175 Difference]: Start difference. First operand has 122 places, 201 transitions, 2399 flow. Second operand 6 states and 249 transitions. [2024-10-14 20:01:25,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 276 transitions, 3407 flow [2024-10-14 20:01:25,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 276 transitions, 3281 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-10-14 20:01:25,942 INFO L231 Difference]: Finished difference. Result has 128 places, 211 transitions, 2688 flow [2024-10-14 20:01:25,942 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=2289, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2688, PETRI_PLACES=128, PETRI_TRANSITIONS=211} [2024-10-14 20:01:25,943 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 67 predicate places. [2024-10-14 20:01:25,943 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 211 transitions, 2688 flow [2024-10-14 20:01:25,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 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 20:01:25,943 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 20:01:25,943 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 20:01:25,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2024-10-14 20:01:26,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 20:01:26,144 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-14 20:01:26,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 20:01:26,144 INFO L85 PathProgramCache]: Analyzing trace with hash -608684058, now seen corresponding path program 1 times [2024-10-14 20:01:26,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 20:01:26,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1688718797] [2024-10-14 20:01:26,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 20:01:26,145 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 20:01:26,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 20:01:26,146 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 20:01:26,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2024-10-14 20:01:26,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 20:01:26,213 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 20:01:26,214 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 20:01:26,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 20:01:26,244 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 20:01:26,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 20:01:26,312 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 20:01:26,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1688718797] [2024-10-14 20:01:26,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1688718797] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 20:01:26,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 20:01:26,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-10-14 20:01:26,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973969534] [2024-10-14 20:01:26,313 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 20:01:26,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 20:01:26,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 20:01:26,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 20:01:26,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-10-14 20:01:26,353 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 64 [2024-10-14 20:01:26,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 211 transitions, 2688 flow. Second operand has 10 states, 10 states have (on average 31.0) internal successors, (310), 10 states have internal predecessors, (310), 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 20:01:26,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 20:01:26,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 64 [2024-10-14 20:01:26,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 20:01:28,682 INFO L124 PetriNetUnfolderBase]: 7105/11864 cut-off events. [2024-10-14 20:01:28,682 INFO L125 PetriNetUnfolderBase]: For 53475/53517 co-relation queries the response was YES. [2024-10-14 20:01:28,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49842 conditions, 11864 events. 7105/11864 cut-off events. For 53475/53517 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 78801 event pairs, 1003 based on Foata normal form. 53/11899 useless extension candidates. Maximal degree in co-relation 49767. Up to 2353 conditions per place. [2024-10-14 20:01:28,759 INFO L140 encePairwiseOnDemand]: 54/64 looper letters, 672 selfloop transitions, 164 changer transitions 0/843 dead transitions. [2024-10-14 20:01:28,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 843 transitions, 8685 flow [2024-10-14 20:01:28,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-14 20:01:28,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-14 20:01:28,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 947 transitions. [2024-10-14 20:01:28,762 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6725852272727273 [2024-10-14 20:01:28,762 INFO L175 Difference]: Start difference. First operand has 128 places, 211 transitions, 2688 flow. Second operand 22 states and 947 transitions. [2024-10-14 20:01:28,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 843 transitions, 8685 flow [2024-10-14 20:01:28,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 843 transitions, 8389 flow, removed 71 selfloop flow, removed 2 redundant places. [2024-10-14 20:01:28,855 INFO L231 Difference]: Finished difference. Result has 160 places, 335 transitions, 4037 flow [2024-10-14 20:01:28,855 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=2576, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=4037, PETRI_PLACES=160, PETRI_TRANSITIONS=335} [2024-10-14 20:01:28,855 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 99 predicate places. [2024-10-14 20:01:28,856 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 335 transitions, 4037 flow [2024-10-14 20:01:28,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 31.0) internal successors, (310), 10 states have internal predecessors, (310), 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 20:01:28,856 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 20:01:28,856 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 20:01:28,860 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 (20)] Forceful destruction successful, exit code 0 [2024-10-14 20:01:29,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 20:01:29,057 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-14 20:01:29,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 20:01:29,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1519702470, now seen corresponding path program 2 times [2024-10-14 20:01:29,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 20:01:29,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1655127975] [2024-10-14 20:01:29,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 20:01:29,058 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 20:01:29,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 20:01:29,059 INFO L229 MonitoredProcess]: Starting monitored process 21 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 20:01:29,060 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 (21)] Waiting until timeout for monitored process [2024-10-14 20:01:29,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 20:01:29,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 20:01:29,125 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 20:01:29,126 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 20:01:29,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 20:01:29,164 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 20:01:29,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 20:01:29,248 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 20:01:29,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1655127975] [2024-10-14 20:01:29,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1655127975] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 20:01:29,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 20:01:29,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-10-14 20:01:29,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267973554] [2024-10-14 20:01:29,249 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 20:01:29,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 20:01:29,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 20:01:29,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 20:01:29,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-14 20:01:29,302 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 64 [2024-10-14 20:01:29,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 335 transitions, 4037 flow. Second operand has 10 states, 10 states have (on average 30.8) internal successors, (308), 10 states have internal predecessors, (308), 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 20:01:29,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 20:01:29,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 64 [2024-10-14 20:01:29,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 20:01:33,136 INFO L124 PetriNetUnfolderBase]: 10132/17247 cut-off events. [2024-10-14 20:01:33,136 INFO L125 PetriNetUnfolderBase]: For 88243/88275 co-relation queries the response was YES. [2024-10-14 20:01:33,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79751 conditions, 17247 events. 10132/17247 cut-off events. For 88243/88275 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 127626 event pairs, 890 based on Foata normal form. 423/17611 useless extension candidates. Maximal degree in co-relation 79663. Up to 3579 conditions per place. [2024-10-14 20:01:33,260 INFO L140 encePairwiseOnDemand]: 48/64 looper letters, 981 selfloop transitions, 350 changer transitions 0/1338 dead transitions. [2024-10-14 20:01:33,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 1338 transitions, 14960 flow [2024-10-14 20:01:33,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-14 20:01:33,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-14 20:01:33,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1143 transitions. [2024-10-14 20:01:33,262 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.744140625 [2024-10-14 20:01:33,262 INFO L175 Difference]: Start difference. First operand has 160 places, 335 transitions, 4037 flow. Second operand 24 states and 1143 transitions. [2024-10-14 20:01:33,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 1338 transitions, 14960 flow [2024-10-14 20:01:33,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 1338 transitions, 14539 flow, removed 174 selfloop flow, removed 3 redundant places. [2024-10-14 20:01:33,532 INFO L231 Difference]: Finished difference. Result has 201 places, 574 transitions, 8240 flow [2024-10-14 20:01:33,532 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=3784, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=8240, PETRI_PLACES=201, PETRI_TRANSITIONS=574} [2024-10-14 20:01:33,533 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 140 predicate places. [2024-10-14 20:01:33,533 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 574 transitions, 8240 flow [2024-10-14 20:01:33,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 30.8) internal successors, (308), 10 states have internal predecessors, (308), 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 20:01:33,533 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 20:01:33,533 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 20:01:33,536 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 (21)] Ended with exit code 0 [2024-10-14 20:01:33,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 20:01:33,734 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-14 20:01:33,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 20:01:33,734 INFO L85 PathProgramCache]: Analyzing trace with hash -482765724, now seen corresponding path program 3 times [2024-10-14 20:01:33,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 20:01:33,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1001360074] [2024-10-14 20:01:33,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 20:01:33,735 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 20:01:33,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 20:01:33,737 INFO L229 MonitoredProcess]: Starting monitored process 22 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 20:01:33,738 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 (22)] Waiting until timeout for monitored process [2024-10-14 20:01:33,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-14 20:01:33,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 20:01:33,800 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 20:01:33,801 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 20:01:33,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 20:01:33,843 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 20:01:34,047 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 20:01:34,047 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 20:01:34,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1001360074] [2024-10-14 20:01:34,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1001360074] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 20:01:34,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 20:01:34,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-10-14 20:01:34,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577012875] [2024-10-14 20:01:34,048 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 20:01:34,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 20:01:34,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 20:01:34,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 20:01:34,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-14 20:01:34,111 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-10-14 20:01:34,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 574 transitions, 8240 flow. Second operand has 10 states, 10 states have (on average 28.9) internal successors, (289), 10 states have internal predecessors, (289), 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 20:01:34,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 20:01:34,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-10-14 20:01:34,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 20:01:41,273 INFO L124 PetriNetUnfolderBase]: 14924/24868 cut-off events. [2024-10-14 20:01:41,273 INFO L125 PetriNetUnfolderBase]: For 281899/281899 co-relation queries the response was YES. [2024-10-14 20:01:41,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145788 conditions, 24868 events. 14924/24868 cut-off events. For 281899/281899 co-relation queries the response was YES. Maximal size of possible extension queue 828. Compared 186439 event pairs, 4118 based on Foata normal form. 90/24958 useless extension candidates. Maximal degree in co-relation 145679. Up to 10471 conditions per place. [2024-10-14 20:01:41,552 INFO L140 encePairwiseOnDemand]: 48/64 looper letters, 788 selfloop transitions, 560 changer transitions 0/1350 dead transitions. [2024-10-14 20:01:41,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 1350 transitions, 20681 flow [2024-10-14 20:01:41,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-14 20:01:41,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-14 20:01:41,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 907 transitions. [2024-10-14 20:01:41,555 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6441761363636364 [2024-10-14 20:01:41,555 INFO L175 Difference]: Start difference. First operand has 201 places, 574 transitions, 8240 flow. Second operand 22 states and 907 transitions. [2024-10-14 20:01:41,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 1350 transitions, 20681 flow [2024-10-14 20:01:43,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 1350 transitions, 19633 flow, removed 452 selfloop flow, removed 2 redundant places. [2024-10-14 20:01:43,127 INFO L231 Difference]: Finished difference. Result has 237 places, 927 transitions, 15185 flow [2024-10-14 20:01:43,127 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=7637, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=285, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=15185, PETRI_PLACES=237, PETRI_TRANSITIONS=927} [2024-10-14 20:01:43,128 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 176 predicate places. [2024-10-14 20:01:43,128 INFO L471 AbstractCegarLoop]: Abstraction has has 237 places, 927 transitions, 15185 flow [2024-10-14 20:01:43,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 28.9) internal successors, (289), 10 states have internal predecessors, (289), 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 20:01:43,128 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 20:01:43,128 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 20:01:43,131 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 (22)] Ended with exit code 0 [2024-10-14 20:01:43,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 20:01:43,329 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-14 20:01:43,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 20:01:43,329 INFO L85 PathProgramCache]: Analyzing trace with hash -627290892, now seen corresponding path program 4 times [2024-10-14 20:01:43,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 20:01:43,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1430420483] [2024-10-14 20:01:43,330 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 20:01:43,330 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 20:01:43,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 20:01:43,331 INFO L229 MonitoredProcess]: Starting monitored process 23 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 20:01:43,332 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 (23)] Waiting until timeout for monitored process [2024-10-14 20:01:43,379 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 20:01:43,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 20:01:43,381 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 20:01:43,381 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 20:01:43,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 20:01:43,449 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 20:01:43,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 20:01:43,513 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 20:01:43,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1430420483] [2024-10-14 20:01:43,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1430420483] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 20:01:43,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 20:01:43,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-10-14 20:01:43,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106370172] [2024-10-14 20:01:43,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 20:01:43,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 20:01:43,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 20:01:43,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 20:01:43,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-10-14 20:01:43,545 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-10-14 20:01:43,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 927 transitions, 15185 flow. Second operand has 6 states, 6 states have (on average 32.166666666666664) internal successors, (193), 6 states have internal predecessors, (193), 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 20:01:43,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 20:01:43,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-10-14 20:01:43,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 20:01:51,143 INFO L124 PetriNetUnfolderBase]: 17730/29899 cut-off events. [2024-10-14 20:01:51,143 INFO L125 PetriNetUnfolderBase]: For 442227/442907 co-relation queries the response was YES. [2024-10-14 20:01:51,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192319 conditions, 29899 events. 17730/29899 cut-off events. For 442227/442907 co-relation queries the response was YES. Maximal size of possible extension queue 1086. Compared 236851 event pairs, 2108 based on Foata normal form. 544/30224 useless extension candidates. Maximal degree in co-relation 192195. Up to 14705 conditions per place. [2024-10-14 20:01:51,541 INFO L140 encePairwiseOnDemand]: 46/64 looper letters, 876 selfloop transitions, 772 changer transitions 3/1663 dead transitions. [2024-10-14 20:01:51,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 1663 transitions, 30261 flow [2024-10-14 20:01:51,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 20:01:51,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 20:01:51,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 247 transitions. [2024-10-14 20:01:51,542 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.771875 [2024-10-14 20:01:51,542 INFO L175 Difference]: Start difference. First operand has 237 places, 927 transitions, 15185 flow. Second operand 5 states and 247 transitions. [2024-10-14 20:01:51,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 1663 transitions, 30261 flow [2024-10-14 20:01:55,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 1663 transitions, 29449 flow, removed 406 selfloop flow, removed 0 redundant places. [2024-10-14 20:01:55,471 INFO L231 Difference]: Finished difference. Result has 245 places, 1421 transitions, 27344 flow [2024-10-14 20:01:55,471 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=14745, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=927, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=351, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=27344, PETRI_PLACES=245, PETRI_TRANSITIONS=1421} [2024-10-14 20:01:55,472 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 184 predicate places. [2024-10-14 20:01:55,472 INFO L471 AbstractCegarLoop]: Abstraction has has 245 places, 1421 transitions, 27344 flow [2024-10-14 20:01:55,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.166666666666664) internal successors, (193), 6 states have internal predecessors, (193), 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 20:01:55,472 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 20:01:55,472 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 20:01:55,475 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 (23)] Ended with exit code 0 [2024-10-14 20:01:55,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 20:01:55,673 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-14 20:01:55,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 20:01:55,673 INFO L85 PathProgramCache]: Analyzing trace with hash 152251518, now seen corresponding path program 5 times [2024-10-14 20:01:55,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 20:01:55,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [30227522] [2024-10-14 20:01:55,673 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-14 20:01:55,674 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 20:01:55,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 20:01:55,675 INFO L229 MonitoredProcess]: Starting monitored process 24 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 20:01:55,676 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 (24)] Waiting until timeout for monitored process [2024-10-14 20:01:55,739 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 20:01:55,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 20:01:55,740 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 20:01:55,741 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 20:01:55,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 20:01:55,785 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 20:01:55,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 20:01:55,895 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 20:01:55,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [30227522] [2024-10-14 20:01:55,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [30227522] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 20:01:55,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 20:01:55,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-10-14 20:01:55,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588379970] [2024-10-14 20:01:55,896 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 20:01:55,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 20:01:55,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 20:01:55,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 20:01:55,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-14 20:01:55,942 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 64 [2024-10-14 20:01:55,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 1421 transitions, 27344 flow. Second operand has 10 states, 10 states have (on average 30.2) internal successors, (302), 10 states have internal predecessors, (302), 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 20:01:55,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 20:01:55,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 64 [2024-10-14 20:01:55,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 20:02:07,350 INFO L124 PetriNetUnfolderBase]: 20172/33302 cut-off events. [2024-10-14 20:02:07,350 INFO L125 PetriNetUnfolderBase]: For 572943/573044 co-relation queries the response was YES. [2024-10-14 20:02:07,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240459 conditions, 33302 events. 20172/33302 cut-off events. For 572943/573044 co-relation queries the response was YES. Maximal size of possible extension queue 1164. Compared 258306 event pairs, 3732 based on Foata normal form. 1080/34370 useless extension candidates. Maximal degree in co-relation 240331. Up to 11859 conditions per place. [2024-10-14 20:02:07,746 INFO L140 encePairwiseOnDemand]: 48/64 looper letters, 1514 selfloop transitions, 905 changer transitions 1/2425 dead transitions. [2024-10-14 20:02:07,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 2425 transitions, 48618 flow [2024-10-14 20:02:07,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-14 20:02:07,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-14 20:02:07,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 937 transitions. [2024-10-14 20:02:07,748 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6365489130434783 [2024-10-14 20:02:07,748 INFO L175 Difference]: Start difference. First operand has 245 places, 1421 transitions, 27344 flow. Second operand 23 states and 937 transitions. [2024-10-14 20:02:07,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 2425 transitions, 48618 flow