./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/chl-array-int-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a046e57d 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/chl-array-int-trans.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 5bb11505151393f96d52a572beff0352326876d897656a8082ae272a8f39e0b4 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 12:35:08,387 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 12:35:08,461 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-13 12:35:08,466 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 12:35:08,467 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 12:35:08,494 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 12:35:08,496 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 12:35:08,497 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 12:35:08,497 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 12:35:08,498 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 12:35:08,499 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 12:35:08,499 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 12:35:08,500 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 12:35:08,500 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 12:35:08,502 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 12:35:08,502 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 12:35:08,503 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 12:35:08,503 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 12:35:08,503 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 12:35:08,506 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 12:35:08,507 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-13 12:35:08,507 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-13 12:35:08,507 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-13 12:35:08,507 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 12:35:08,508 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-13 12:35:08,508 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 12:35:08,508 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 12:35:08,508 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 12:35:08,509 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 12:35:08,509 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 12:35:08,509 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 12:35:08,509 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 12:35:08,510 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 12:35:08,510 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:35:08,511 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 12:35:08,512 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 12:35:08,512 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 12:35:08,513 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 12:35:08,513 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 12:35:08,514 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 12:35:08,514 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 12:35:08,514 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 12:35:08,514 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bb11505151393f96d52a572beff0352326876d897656a8082ae272a8f39e0b4 [2024-10-13 12:35:08,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 12:35:08,788 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 12:35:08,792 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 12:35:08,793 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 12:35:08,793 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 12:35:08,794 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2024-10-13 12:35:10,233 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 12:35:10,429 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 12:35:10,430 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2024-10-13 12:35:10,440 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82f84b682/f77456d764b348b7bf14d235c4147323/FLAG892325631 [2024-10-13 12:35:10,805 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82f84b682/f77456d764b348b7bf14d235c4147323 [2024-10-13 12:35:10,807 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 12:35:10,808 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 12:35:10,811 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 12:35:10,811 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 12:35:10,816 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 12:35:10,817 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:35:10" (1/1) ... [2024-10-13 12:35:10,818 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1eb3a0c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:35:10, skipping insertion in model container [2024-10-13 12:35:10,818 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:35:10" (1/1) ... [2024-10-13 12:35:10,848 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:35:11,090 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:35:11,103 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) [2024-10-13 12:35:11,105 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@23eda155 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:35:11, skipping insertion in model container [2024-10-13 12:35:11,105 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 12:35:11,105 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-13 12:35:11,107 INFO L158 Benchmark]: Toolchain (without parser) took 298.32ms. Allocated memory is still 138.4MB. Free memory was 86.8MB in the beginning and 75.3MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-13 12:35:11,108 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 138.4MB. Free memory is still 110.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 12:35:11,109 INFO L158 Benchmark]: CACSL2BoogieTranslator took 294.70ms. Allocated memory is still 138.4MB. Free memory was 86.6MB in the beginning and 75.3MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-13 12:35:11,111 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 138.4MB. Free memory is still 110.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 294.70ms. Allocated memory is still 138.4MB. Free memory was 86.6MB in the beginning and 75.3MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 117]: 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/chl-array-int-trans.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 5bb11505151393f96d52a572beff0352326876d897656a8082ae272a8f39e0b4 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 12:35:13,094 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 12:35:13,178 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-13 12:35:13,185 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 12:35:13,186 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 12:35:13,208 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 12:35:13,209 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 12:35:13,209 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 12:35:13,210 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 12:35:13,211 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 12:35:13,211 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 12:35:13,211 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 12:35:13,212 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 12:35:13,212 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 12:35:13,213 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 12:35:13,213 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 12:35:13,214 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 12:35:13,214 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 12:35:13,214 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 12:35:13,215 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 12:35:13,215 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-13 12:35:13,219 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-13 12:35:13,220 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-13 12:35:13,220 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 12:35:13,220 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-13 12:35:13,220 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-13 12:35:13,221 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 12:35:13,221 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-13 12:35:13,221 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 12:35:13,221 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 12:35:13,221 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 12:35:13,222 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 12:35:13,222 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 12:35:13,222 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 12:35:13,222 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 12:35:13,223 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:35:13,223 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 12:35:13,225 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 12:35:13,225 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-13 12:35:13,227 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-13 12:35:13,228 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 12:35:13,228 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 12:35:13,228 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 12:35:13,228 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 12:35:13,228 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-13 12:35:13,229 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bb11505151393f96d52a572beff0352326876d897656a8082ae272a8f39e0b4 [2024-10-13 12:35:13,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 12:35:13,580 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 12:35:13,584 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 12:35:13,585 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 12:35:13,586 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 12:35:13,588 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2024-10-13 12:35:15,155 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 12:35:15,366 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 12:35:15,367 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2024-10-13 12:35:15,375 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/181150bd9/27e0ab48a1a04d16aeef65ec1cd5c3ef/FLAG6a853287d [2024-10-13 12:35:15,387 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/181150bd9/27e0ab48a1a04d16aeef65ec1cd5c3ef [2024-10-13 12:35:15,390 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 12:35:15,391 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 12:35:15,392 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 12:35:15,392 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 12:35:15,397 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 12:35:15,398 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:35:15" (1/1) ... [2024-10-13 12:35:15,399 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61975c49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:35:15, skipping insertion in model container [2024-10-13 12:35:15,399 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:35:15" (1/1) ... [2024-10-13 12:35:15,423 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:35:15,656 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:35:15,675 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-13 12:35:15,679 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:35:15,708 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:35:15,717 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 12:35:15,762 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:35:15,786 INFO L204 MainTranslator]: Completed translation [2024-10-13 12:35:15,787 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:35:15 WrapperNode [2024-10-13 12:35:15,787 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 12:35:15,788 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 12:35:15,788 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 12:35:15,788 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 12:35:15,795 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:35:15" (1/1) ... [2024-10-13 12:35:15,811 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:35:15" (1/1) ... [2024-10-13 12:35:15,855 INFO L138 Inliner]: procedures = 27, calls = 35, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 263 [2024-10-13 12:35:15,859 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 12:35:15,859 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 12:35:15,860 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 12:35:15,860 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 12:35:15,871 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:35:15" (1/1) ... [2024-10-13 12:35:15,871 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:35:15" (1/1) ... [2024-10-13 12:35:15,875 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:35:15" (1/1) ... [2024-10-13 12:35:15,903 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-10-13 12:35:15,906 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:35:15" (1/1) ... [2024-10-13 12:35:15,906 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:35:15" (1/1) ... [2024-10-13 12:35:15,926 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:35:15" (1/1) ... [2024-10-13 12:35:15,932 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:35:15" (1/1) ... [2024-10-13 12:35:15,937 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:35:15" (1/1) ... [2024-10-13 12:35:15,939 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:35:15" (1/1) ... [2024-10-13 12:35:15,946 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 12:35:15,951 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 12:35:15,951 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 12:35:15,952 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 12:35:15,953 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:35:15" (1/1) ... [2024-10-13 12:35:15,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:35:15,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:35:15,993 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) [2024-10-13 12:35:15,996 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 [2024-10-13 12:35:16,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 12:35:16,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-13 12:35:16,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-13 12:35:16,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-13 12:35:16,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-13 12:35:16,047 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 12:35:16,048 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 12:35:16,048 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 12:35:16,048 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 12:35:16,049 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-13 12:35:16,049 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-13 12:35:16,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-13 12:35:16,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 12:35:16,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 12:35:16,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-13 12:35:16,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-13 12:35:16,052 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 12:35:16,206 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 12:35:16,209 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 12:35:16,981 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 12:35:16,981 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 12:35:17,347 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 12:35:17,348 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-13 12:35:17,349 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:35:17 BoogieIcfgContainer [2024-10-13 12:35:17,349 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 12:35:17,351 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 12:35:17,351 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 12:35:17,354 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 12:35:17,355 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:35:15" (1/3) ... [2024-10-13 12:35:17,355 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bc14d43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:35:17, skipping insertion in model container [2024-10-13 12:35:17,356 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:35:15" (2/3) ... [2024-10-13 12:35:17,356 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bc14d43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:35:17, skipping insertion in model container [2024-10-13 12:35:17,356 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:35:17" (3/3) ... [2024-10-13 12:35:17,359 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-trans.wvr.c [2024-10-13 12:35:17,377 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 12:35:17,377 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2024-10-13 12:35:17,377 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 12:35:17,478 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-13 12:35:17,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 87 transitions, 195 flow [2024-10-13 12:35:17,561 INFO L124 PetriNetUnfolderBase]: 9/84 cut-off events. [2024-10-13 12:35:17,562 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-13 12:35:17,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 84 events. 9/84 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 269 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2024-10-13 12:35:17,567 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 87 transitions, 195 flow [2024-10-13 12:35:17,572 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 83 transitions, 184 flow [2024-10-13 12:35:17,586 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 12:35:17,595 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;@1f70175e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 12:35:17,596 INFO L334 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2024-10-13 12:35:17,599 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 12:35:17,600 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-13 12:35:17,600 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 12:35:17,600 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:35:17,601 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 12:35:17,601 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-13 12:35:17,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:35:17,607 INFO L85 PathProgramCache]: Analyzing trace with hash 847430, now seen corresponding path program 1 times [2024-10-13 12:35:17,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:35:17,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [411338086] [2024-10-13 12:35:17,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:35:17,621 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 [2024-10-13 12:35:17,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:35:17,624 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) [2024-10-13 12:35:17,626 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 [2024-10-13 12:35:17,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:35:17,716 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 12:35:17,724 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:35:17,801 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 [2024-10-13 12:35:17,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:35:17,824 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:35:17,824 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:35:17,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [411338086] [2024-10-13 12:35:17,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [411338086] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:35:17,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:35:17,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 12:35:17,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124422318] [2024-10-13 12:35:17,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:35:17,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:35:17,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:35:17,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:35:17,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:35:17,991 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 87 [2024-10-13 12:35:17,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 83 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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) [2024-10-13 12:35:17,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:35:17,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 87 [2024-10-13 12:35:17,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:35:18,454 INFO L124 PetriNetUnfolderBase]: 977/1702 cut-off events. [2024-10-13 12:35:18,455 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2024-10-13 12:35:18,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3126 conditions, 1702 events. 977/1702 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 9504 event pairs, 608 based on Foata normal form. 1/1214 useless extension candidates. Maximal degree in co-relation 2866. Up to 1318 conditions per place. [2024-10-13 12:35:18,476 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 36 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2024-10-13 12:35:18,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 78 transitions, 250 flow [2024-10-13 12:35:18,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:35:18,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:35:18,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 174 transitions. [2024-10-13 12:35:18,491 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-13 12:35:18,493 INFO L175 Difference]: Start difference. First operand has 84 places, 83 transitions, 184 flow. Second operand 3 states and 174 transitions. [2024-10-13 12:35:18,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 78 transitions, 250 flow [2024-10-13 12:35:18,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 78 transitions, 238 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-13 12:35:18,507 INFO L231 Difference]: Finished difference. Result has 75 places, 78 transitions, 166 flow [2024-10-13 12:35:18,511 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=75, PETRI_TRANSITIONS=78} [2024-10-13 12:35:18,516 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, -9 predicate places. [2024-10-13 12:35:18,516 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 78 transitions, 166 flow [2024-10-13 12:35:18,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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) [2024-10-13 12:35:18,516 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:35:18,517 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 12:35:18,521 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 [2024-10-13 12:35:18,719 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 [2024-10-13 12:35:18,720 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-13 12:35:18,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:35:18,721 INFO L85 PathProgramCache]: Analyzing trace with hash 847431, now seen corresponding path program 1 times [2024-10-13 12:35:18,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:35:18,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1992767919] [2024-10-13 12:35:18,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:35:18,722 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 [2024-10-13 12:35:18,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:35:18,725 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) [2024-10-13 12:35:18,726 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 [2024-10-13 12:35:18,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:35:18,805 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 12:35:18,806 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:35:18,828 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 [2024-10-13 12:35:18,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:35:18,907 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:35:18,908 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:35:18,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1992767919] [2024-10-13 12:35:18,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1992767919] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:35:18,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:35:18,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 12:35:18,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84057830] [2024-10-13 12:35:18,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:35:18,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:35:18,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:35:18,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:35:18,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:35:19,242 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 87 [2024-10-13 12:35:19,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 78 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 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) [2024-10-13 12:35:19,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:35:19,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 87 [2024-10-13 12:35:19,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:35:19,741 INFO L124 PetriNetUnfolderBase]: 980/1711 cut-off events. [2024-10-13 12:35:19,741 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-10-13 12:35:19,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3086 conditions, 1711 events. 980/1711 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 9528 event pairs, 608 based on Foata normal form. 0/1218 useless extension candidates. Maximal degree in co-relation 3036. Up to 1331 conditions per place. [2024-10-13 12:35:19,754 INFO L140 encePairwiseOnDemand]: 74/87 looper letters, 40 selfloop transitions, 10 changer transitions 0/87 dead transitions. [2024-10-13 12:35:19,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 87 transitions, 286 flow [2024-10-13 12:35:19,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:35:19,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:35:19,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 229 transitions. [2024-10-13 12:35:19,760 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6580459770114943 [2024-10-13 12:35:19,760 INFO L175 Difference]: Start difference. First operand has 75 places, 78 transitions, 166 flow. Second operand 4 states and 229 transitions. [2024-10-13 12:35:19,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 87 transitions, 286 flow [2024-10-13 12:35:19,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 87 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 12:35:19,764 INFO L231 Difference]: Finished difference. Result has 79 places, 87 transitions, 244 flow [2024-10-13 12:35:19,764 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=244, PETRI_PLACES=79, PETRI_TRANSITIONS=87} [2024-10-13 12:35:19,765 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, -5 predicate places. [2024-10-13 12:35:19,765 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 87 transitions, 244 flow [2024-10-13 12:35:19,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 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) [2024-10-13 12:35:19,766 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:35:19,766 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-13 12:35:19,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-10-13 12:35:19,969 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 [2024-10-13 12:35:19,969 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-13 12:35:19,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:35:19,970 INFO L85 PathProgramCache]: Analyzing trace with hash 814408889, now seen corresponding path program 1 times [2024-10-13 12:35:19,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:35:19,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1643716590] [2024-10-13 12:35:19,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:35:19,971 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 [2024-10-13 12:35:19,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:35:19,974 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) [2024-10-13 12:35:19,975 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 [2024-10-13 12:35:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:35:20,031 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 12:35:20,032 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:35:20,045 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 [2024-10-13 12:35:20,198 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:35:20,198 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:35:20,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:35:20,453 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:35:20,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1643716590] [2024-10-13 12:35:20,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1643716590] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:35:20,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:35:20,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-13 12:35:20,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663232854] [2024-10-13 12:35:20,455 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:35:20,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 12:35:20,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:35:20,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 12:35:20,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-13 12:35:21,479 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 87 [2024-10-13 12:35:21,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 87 transitions, 244 flow. Second operand has 10 states, 10 states have (on average 45.0) internal successors, (450), 10 states have internal predecessors, (450), 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) [2024-10-13 12:35:21,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:35:21,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 87 [2024-10-13 12:35:21,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:35:22,925 INFO L124 PetriNetUnfolderBase]: 989/1738 cut-off events. [2024-10-13 12:35:22,925 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-10-13 12:35:22,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3204 conditions, 1738 events. 989/1738 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 9727 event pairs, 608 based on Foata normal form. 0/1245 useless extension candidates. Maximal degree in co-relation 3050. Up to 1334 conditions per place. [2024-10-13 12:35:22,940 INFO L140 encePairwiseOnDemand]: 74/87 looper letters, 40 selfloop transitions, 37 changer transitions 0/114 dead transitions. [2024-10-13 12:35:22,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 114 transitions, 518 flow [2024-10-13 12:35:22,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 12:35:22,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 12:35:22,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 526 transitions. [2024-10-13 12:35:22,947 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6045977011494252 [2024-10-13 12:35:22,948 INFO L175 Difference]: Start difference. First operand has 79 places, 87 transitions, 244 flow. Second operand 10 states and 526 transitions. [2024-10-13 12:35:22,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 114 transitions, 518 flow [2024-10-13 12:35:22,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 114 transitions, 518 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 12:35:22,953 INFO L231 Difference]: Finished difference. Result has 91 places, 114 transitions, 488 flow [2024-10-13 12:35:22,953 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=488, PETRI_PLACES=91, PETRI_TRANSITIONS=114} [2024-10-13 12:35:22,954 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 7 predicate places. [2024-10-13 12:35:22,955 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 114 transitions, 488 flow [2024-10-13 12:35:22,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 45.0) internal successors, (450), 10 states have internal predecessors, (450), 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) [2024-10-13 12:35:22,956 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:35:22,956 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:35:22,961 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 [2024-10-13 12:35:23,158 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 [2024-10-13 12:35:23,160 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-13 12:35:23,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:35:23,160 INFO L85 PathProgramCache]: Analyzing trace with hash 831451377, now seen corresponding path program 1 times [2024-10-13 12:35:23,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:35:23,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [256623742] [2024-10-13 12:35:23,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:35:23,162 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 [2024-10-13 12:35:23,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:35:23,167 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) [2024-10-13 12:35:23,169 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 [2024-10-13 12:35:23,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:35:23,240 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 12:35:23,243 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:35:23,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:35:23,308 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:35:23,308 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:35:23,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [256623742] [2024-10-13 12:35:23,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [256623742] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:35:23,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:35:23,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 12:35:23,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529509119] [2024-10-13 12:35:23,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:35:23,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:35:23,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:35:23,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:35:23,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:35:23,380 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 87 [2024-10-13 12:35:23,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 114 transitions, 488 flow. Second operand has 5 states, 5 states have (on average 47.4) internal successors, (237), 5 states have internal predecessors, (237), 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) [2024-10-13 12:35:23,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:35:23,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 87 [2024-10-13 12:35:23,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:35:23,986 INFO L124 PetriNetUnfolderBase]: 1848/3317 cut-off events. [2024-10-13 12:35:23,987 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2024-10-13 12:35:23,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6181 conditions, 3317 events. 1848/3317 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 21654 event pairs, 854 based on Foata normal form. 0/2388 useless extension candidates. Maximal degree in co-relation 6039. Up to 1591 conditions per place. [2024-10-13 12:35:24,011 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 143 selfloop transitions, 4 changer transitions 0/186 dead transitions. [2024-10-13 12:35:24,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 186 transitions, 1082 flow [2024-10-13 12:35:24,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:35:24,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:35:24,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 321 transitions. [2024-10-13 12:35:24,013 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7379310344827587 [2024-10-13 12:35:24,013 INFO L175 Difference]: Start difference. First operand has 91 places, 114 transitions, 488 flow. Second operand 5 states and 321 transitions. [2024-10-13 12:35:24,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 186 transitions, 1082 flow [2024-10-13 12:35:24,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 186 transitions, 926 flow, removed 43 selfloop flow, removed 4 redundant places. [2024-10-13 12:35:24,024 INFO L231 Difference]: Finished difference. Result has 93 places, 115 transitions, 410 flow [2024-10-13 12:35:24,024 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=410, PETRI_PLACES=93, PETRI_TRANSITIONS=115} [2024-10-13 12:35:24,025 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 9 predicate places. [2024-10-13 12:35:24,026 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 115 transitions, 410 flow [2024-10-13 12:35:24,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.4) internal successors, (237), 5 states have internal predecessors, (237), 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) [2024-10-13 12:35:24,026 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:35:24,026 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:35:24,031 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 [2024-10-13 12:35:24,229 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 [2024-10-13 12:35:24,230 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-13 12:35:24,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:35:24,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1373843903, now seen corresponding path program 1 times [2024-10-13 12:35:24,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:35:24,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1448427875] [2024-10-13 12:35:24,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:35:24,231 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 [2024-10-13 12:35:24,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:35:24,234 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) [2024-10-13 12:35:24,235 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 [2024-10-13 12:35:24,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:35:24,320 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-13 12:35:24,321 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:35:24,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:35:24,378 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:35:24,378 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:35:24,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1448427875] [2024-10-13 12:35:24,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1448427875] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:35:24,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:35:24,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 12:35:24,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212998230] [2024-10-13 12:35:24,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:35:24,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:35:24,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:35:24,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:35:24,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:35:24,457 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 87 [2024-10-13 12:35:24,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 115 transitions, 410 flow. Second operand has 5 states, 5 states have (on average 47.8) internal successors, (239), 5 states have internal predecessors, (239), 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) [2024-10-13 12:35:24,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:35:24,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 87 [2024-10-13 12:35:24,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:35:25,302 INFO L124 PetriNetUnfolderBase]: 3218/5905 cut-off events. [2024-10-13 12:35:25,302 INFO L125 PetriNetUnfolderBase]: For 640/640 co-relation queries the response was YES. [2024-10-13 12:35:25,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11182 conditions, 5905 events. 3218/5905 cut-off events. For 640/640 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 43685 event pairs, 1458 based on Foata normal form. 62/4395 useless extension candidates. Maximal degree in co-relation 11015. Up to 2576 conditions per place. [2024-10-13 12:35:25,347 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 125 selfloop transitions, 9 changer transitions 0/173 dead transitions. [2024-10-13 12:35:25,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 173 transitions, 850 flow [2024-10-13 12:35:25,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:35:25,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:35:25,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 318 transitions. [2024-10-13 12:35:25,350 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7310344827586207 [2024-10-13 12:35:25,350 INFO L175 Difference]: Start difference. First operand has 93 places, 115 transitions, 410 flow. Second operand 5 states and 318 transitions. [2024-10-13 12:35:25,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 173 transitions, 850 flow [2024-10-13 12:35:25,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 173 transitions, 846 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-13 12:35:25,356 INFO L231 Difference]: Finished difference. Result has 98 places, 117 transitions, 445 flow [2024-10-13 12:35:25,358 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=445, PETRI_PLACES=98, PETRI_TRANSITIONS=117} [2024-10-13 12:35:25,358 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 14 predicate places. [2024-10-13 12:35:25,360 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 117 transitions, 445 flow [2024-10-13 12:35:25,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.8) internal successors, (239), 5 states have internal predecessors, (239), 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) [2024-10-13 12:35:25,360 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:35:25,360 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:35:25,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-10-13 12:35:25,564 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 [2024-10-13 12:35:25,565 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-13 12:35:25,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:35:25,565 INFO L85 PathProgramCache]: Analyzing trace with hash 94225760, now seen corresponding path program 1 times [2024-10-13 12:35:25,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:35:25,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [603312576] [2024-10-13 12:35:25,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:35:25,566 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 [2024-10-13 12:35:25,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:35:25,568 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) [2024-10-13 12:35:25,569 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 [2024-10-13 12:35:25,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:35:25,631 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-13 12:35:25,632 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:35:25,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:35:25,684 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:35:25,684 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:35:25,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [603312576] [2024-10-13 12:35:25,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [603312576] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:35:25,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:35:25,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 12:35:25,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935883305] [2024-10-13 12:35:25,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:35:25,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:35:25,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:35:25,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:35:25,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:35:25,790 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 87 [2024-10-13 12:35:25,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 117 transitions, 445 flow. Second operand has 5 states, 5 states have (on average 47.8) internal successors, (239), 5 states have internal predecessors, (239), 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) [2024-10-13 12:35:25,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:35:25,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 87 [2024-10-13 12:35:25,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:35:26,516 INFO L124 PetriNetUnfolderBase]: 2892/5295 cut-off events. [2024-10-13 12:35:26,517 INFO L125 PetriNetUnfolderBase]: For 1570/1570 co-relation queries the response was YES. [2024-10-13 12:35:26,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10498 conditions, 5295 events. 2892/5295 cut-off events. For 1570/1570 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 37428 event pairs, 1484 based on Foata normal form. 0/3862 useless extension candidates. Maximal degree in co-relation 10328. Up to 2764 conditions per place. [2024-10-13 12:35:26,548 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 120 selfloop transitions, 8 changer transitions 0/167 dead transitions. [2024-10-13 12:35:26,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 167 transitions, 865 flow [2024-10-13 12:35:26,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:35:26,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:35:26,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 311 transitions. [2024-10-13 12:35:26,552 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7149425287356321 [2024-10-13 12:35:26,552 INFO L175 Difference]: Start difference. First operand has 98 places, 117 transitions, 445 flow. Second operand 5 states and 311 transitions. [2024-10-13 12:35:26,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 167 transitions, 865 flow [2024-10-13 12:35:26,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 167 transitions, 857 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-13 12:35:26,598 INFO L231 Difference]: Finished difference. Result has 103 places, 118 transitions, 462 flow [2024-10-13 12:35:26,598 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=462, PETRI_PLACES=103, PETRI_TRANSITIONS=118} [2024-10-13 12:35:26,599 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 19 predicate places. [2024-10-13 12:35:26,599 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 118 transitions, 462 flow [2024-10-13 12:35:26,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.8) internal successors, (239), 5 states have internal predecessors, (239), 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) [2024-10-13 12:35:26,599 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:35:26,603 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-13 12:35:26,609 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 [2024-10-13 12:35:26,803 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 [2024-10-13 12:35:26,804 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-13 12:35:26,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:35:26,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1584549135, now seen corresponding path program 2 times [2024-10-13 12:35:26,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:35:26,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [850919488] [2024-10-13 12:35:26,805 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:35:26,805 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 [2024-10-13 12:35:26,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:35:26,806 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) [2024-10-13 12:35:26,807 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 [2024-10-13 12:35:26,879 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:35:26,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:35:26,883 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-13 12:35:26,884 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:35:26,900 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 [2024-10-13 12:35:27,147 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:35:27,147 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:35:27,670 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:35:27,670 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:35:27,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [850919488] [2024-10-13 12:35:27,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [850919488] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:35:27,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:35:27,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-13 12:35:27,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275243718] [2024-10-13 12:35:27,671 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:35:27,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 12:35:27,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:35:27,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 12:35:27,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-13 12:35:30,462 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 87 [2024-10-13 12:35:30,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 118 transitions, 462 flow. Second operand has 14 states, 14 states have (on average 45.57142857142857) internal successors, (638), 14 states have internal predecessors, (638), 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) [2024-10-13 12:35:30,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:35:30,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 87 [2024-10-13 12:35:30,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:35:35,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-13 12:35:44,527 INFO L124 PetriNetUnfolderBase]: 2633/5246 cut-off events. [2024-10-13 12:35:44,527 INFO L125 PetriNetUnfolderBase]: For 2159/2159 co-relation queries the response was YES. [2024-10-13 12:35:44,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10716 conditions, 5246 events. 2633/5246 cut-off events. For 2159/2159 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 40026 event pairs, 1847 based on Foata normal form. 42/3842 useless extension candidates. Maximal degree in co-relation 10086. Up to 3708 conditions per place. [2024-10-13 12:35:44,557 INFO L140 encePairwiseOnDemand]: 74/87 looper letters, 44 selfloop transitions, 91 changer transitions 0/172 dead transitions. [2024-10-13 12:35:44,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 172 transitions, 1014 flow [2024-10-13 12:35:44,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-13 12:35:44,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-13 12:35:44,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1117 transitions. [2024-10-13 12:35:44,565 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5835945663531871 [2024-10-13 12:35:44,568 INFO L175 Difference]: Start difference. First operand has 103 places, 118 transitions, 462 flow. Second operand 22 states and 1117 transitions. [2024-10-13 12:35:44,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 172 transitions, 1014 flow [2024-10-13 12:35:44,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 172 transitions, 964 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 12:35:44,580 INFO L231 Difference]: Finished difference. Result has 127 places, 172 transitions, 962 flow [2024-10-13 12:35:44,581 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=962, PETRI_PLACES=127, PETRI_TRANSITIONS=172} [2024-10-13 12:35:44,582 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 43 predicate places. [2024-10-13 12:35:44,582 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 172 transitions, 962 flow [2024-10-13 12:35:44,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 45.57142857142857) internal successors, (638), 14 states have internal predecessors, (638), 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) [2024-10-13 12:35:44,583 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:35:44,583 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:35:44,587 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-10-13 12:35:44,786 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 [2024-10-13 12:35:44,787 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-13 12:35:44,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:35:44,788 INFO L85 PathProgramCache]: Analyzing trace with hash 168687573, now seen corresponding path program 1 times [2024-10-13 12:35:44,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:35:44,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1643692954] [2024-10-13 12:35:44,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:35:44,789 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 [2024-10-13 12:35:44,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:35:44,790 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) [2024-10-13 12:35:44,793 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 [2024-10-13 12:35:44,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:35:44,875 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-13 12:35:44,876 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:35:44,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:35:44,918 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:35:44,918 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:35:44,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1643692954] [2024-10-13 12:35:44,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1643692954] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:35:44,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:35:44,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 12:35:44,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986780031] [2024-10-13 12:35:44,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:35:44,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:35:44,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:35:44,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:35:44,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:35:44,977 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 87 [2024-10-13 12:35:44,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 172 transitions, 962 flow. Second operand has 5 states, 5 states have (on average 48.2) internal successors, (241), 5 states have internal predecessors, (241), 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) [2024-10-13 12:35:44,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:35:44,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 87 [2024-10-13 12:35:44,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:35:45,739 INFO L124 PetriNetUnfolderBase]: 4952/9381 cut-off events. [2024-10-13 12:35:45,739 INFO L125 PetriNetUnfolderBase]: For 4139/4139 co-relation queries the response was YES. [2024-10-13 12:35:45,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19713 conditions, 9381 events. 4952/9381 cut-off events. For 4139/4139 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 75189 event pairs, 2337 based on Foata normal form. 118/7242 useless extension candidates. Maximal degree in co-relation 19454. Up to 4257 conditions per place. [2024-10-13 12:35:45,801 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 166 selfloop transitions, 15 changer transitions 0/220 dead transitions. [2024-10-13 12:35:45,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 220 transitions, 1482 flow [2024-10-13 12:35:45,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:35:45,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:35:45,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 314 transitions. [2024-10-13 12:35:45,804 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7218390804597701 [2024-10-13 12:35:45,804 INFO L175 Difference]: Start difference. First operand has 127 places, 172 transitions, 962 flow. Second operand 5 states and 314 transitions. [2024-10-13 12:35:45,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 220 transitions, 1482 flow [2024-10-13 12:35:45,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 220 transitions, 1250 flow, removed 67 selfloop flow, removed 9 redundant places. [2024-10-13 12:35:45,821 INFO L231 Difference]: Finished difference. Result has 124 places, 174 transitions, 781 flow [2024-10-13 12:35:45,822 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=781, PETRI_PLACES=124, PETRI_TRANSITIONS=174} [2024-10-13 12:35:45,822 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 40 predicate places. [2024-10-13 12:35:45,822 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 174 transitions, 781 flow [2024-10-13 12:35:45,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.2) internal successors, (241), 5 states have internal predecessors, (241), 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) [2024-10-13 12:35:45,823 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:35:45,823 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:35:45,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2024-10-13 12:35:46,023 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 [2024-10-13 12:35:46,024 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-13 12:35:46,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:35:46,024 INFO L85 PathProgramCache]: Analyzing trace with hash 266447558, now seen corresponding path program 1 times [2024-10-13 12:35:46,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:35:46,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [757487945] [2024-10-13 12:35:46,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:35:46,025 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 [2024-10-13 12:35:46,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:35:46,027 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) [2024-10-13 12:35:46,028 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 [2024-10-13 12:35:46,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:35:46,106 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 12:35:46,107 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:35:46,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:35:46,223 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:35:46,223 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:35:46,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [757487945] [2024-10-13 12:35:46,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [757487945] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:35:46,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:35:46,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 12:35:46,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484391591] [2024-10-13 12:35:46,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:35:46,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:35:46,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:35:46,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:35:46,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:35:46,291 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 87 [2024-10-13 12:35:46,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 174 transitions, 781 flow. Second operand has 5 states, 5 states have (on average 48.2) internal successors, (241), 5 states have internal predecessors, (241), 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) [2024-10-13 12:35:46,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:35:46,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 87 [2024-10-13 12:35:46,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:35:47,109 INFO L124 PetriNetUnfolderBase]: 4418/8885 cut-off events. [2024-10-13 12:35:47,110 INFO L125 PetriNetUnfolderBase]: For 5756/5756 co-relation queries the response was YES. [2024-10-13 12:35:47,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18881 conditions, 8885 events. 4418/8885 cut-off events. For 5756/5756 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 73468 event pairs, 2574 based on Foata normal form. 0/6778 useless extension candidates. Maximal degree in co-relation 18660. Up to 4330 conditions per place. [2024-10-13 12:35:47,167 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 237 selfloop transitions, 4 changer transitions 0/280 dead transitions. [2024-10-13 12:35:47,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 280 transitions, 1752 flow [2024-10-13 12:35:47,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:35:47,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:35:47,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 313 transitions. [2024-10-13 12:35:47,169 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7195402298850575 [2024-10-13 12:35:47,169 INFO L175 Difference]: Start difference. First operand has 124 places, 174 transitions, 781 flow. Second operand 5 states and 313 transitions. [2024-10-13 12:35:47,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 280 transitions, 1752 flow [2024-10-13 12:35:47,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 280 transitions, 1728 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 12:35:47,187 INFO L231 Difference]: Finished difference. Result has 129 places, 175 transitions, 786 flow [2024-10-13 12:35:47,187 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=769, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=786, PETRI_PLACES=129, PETRI_TRANSITIONS=175} [2024-10-13 12:35:47,188 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 45 predicate places. [2024-10-13 12:35:47,188 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 175 transitions, 786 flow [2024-10-13 12:35:47,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.2) internal successors, (241), 5 states have internal predecessors, (241), 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) [2024-10-13 12:35:47,189 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:35:47,189 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:35:47,193 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 [2024-10-13 12:35:47,389 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 [2024-10-13 12:35:47,390 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-13 12:35:47,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:35:47,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1445626356, now seen corresponding path program 1 times [2024-10-13 12:35:47,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:35:47,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1220633132] [2024-10-13 12:35:47,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:35:47,391 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 [2024-10-13 12:35:47,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:35:47,392 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) [2024-10-13 12:35:47,393 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 [2024-10-13 12:35:47,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:35:47,492 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-13 12:35:47,493 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:35:47,497 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 [2024-10-13 12:35:47,527 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-10-13 12:35:47,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-10-13 12:35:47,550 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-10-13 12:35:47,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-10-13 12:35:47,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 12:35:47,580 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:35:47,581 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:35:47,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1220633132] [2024-10-13 12:35:47,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1220633132] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:35:47,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:35:47,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:35:47,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534399607] [2024-10-13 12:35:47,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:35:47,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:35:47,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:35:47,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:35:47,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:35:47,696 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 87 [2024-10-13 12:35:47,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 175 transitions, 786 flow. Second operand has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 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) [2024-10-13 12:35:47,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:35:47,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 87 [2024-10-13 12:35:47,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:35:48,600 INFO L124 PetriNetUnfolderBase]: 5571/10793 cut-off events. [2024-10-13 12:35:48,600 INFO L125 PetriNetUnfolderBase]: For 7083/7083 co-relation queries the response was YES. [2024-10-13 12:35:48,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23491 conditions, 10793 events. 5571/10793 cut-off events. For 7083/7083 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 87695 event pairs, 4457 based on Foata normal form. 0/8995 useless extension candidates. Maximal degree in co-relation 23268. Up to 8068 conditions per place. [2024-10-13 12:35:48,655 INFO L140 encePairwiseOnDemand]: 80/87 looper letters, 116 selfloop transitions, 23 changer transitions 0/171 dead transitions. [2024-10-13 12:35:48,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 171 transitions, 1056 flow [2024-10-13 12:35:48,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:35:48,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:35:48,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 226 transitions. [2024-10-13 12:35:48,657 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5195402298850574 [2024-10-13 12:35:48,657 INFO L175 Difference]: Start difference. First operand has 129 places, 175 transitions, 786 flow. Second operand 5 states and 226 transitions. [2024-10-13 12:35:48,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 171 transitions, 1056 flow [2024-10-13 12:35:48,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 171 transitions, 1051 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 12:35:48,674 INFO L231 Difference]: Finished difference. Result has 127 places, 171 transitions, 819 flow [2024-10-13 12:35:48,675 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=773, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=819, PETRI_PLACES=127, PETRI_TRANSITIONS=171} [2024-10-13 12:35:48,675 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 43 predicate places. [2024-10-13 12:35:48,675 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 171 transitions, 819 flow [2024-10-13 12:35:48,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 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) [2024-10-13 12:35:48,676 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:35:48,676 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:35:48,681 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 [2024-10-13 12:35:48,876 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 [2024-10-13 12:35:48,877 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-13 12:35:48,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:35:48,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1445626357, now seen corresponding path program 1 times [2024-10-13 12:35:48,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:35:48,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1574642733] [2024-10-13 12:35:48,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:35:48,878 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 [2024-10-13 12:35:48,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:35:48,879 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) [2024-10-13 12:35:48,880 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 [2024-10-13 12:35:48,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:35:49,003 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-13 12:35:49,005 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:35:49,021 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 [2024-10-13 12:35:49,027 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 [2024-10-13 12:35:49,188 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-10-13 12:35:49,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-10-13 12:35:49,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-13 12:35:49,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 12:35:49,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-13 12:35:49,369 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-13 12:35:49,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-13 12:35:49,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:35:49,486 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:35:54,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:35:54,564 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:35:54,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1574642733] [2024-10-13 12:35:54,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1574642733] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:35:54,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:35:54,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-13 12:35:54,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450528863] [2024-10-13 12:35:54,564 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:35:54,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 12:35:54,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:35:54,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 12:35:54,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=140, Unknown=1, NotChecked=0, Total=182 [2024-10-13 12:35:59,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 12:36:05,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 12:36:11,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 12:36:12,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 12:36:17,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 12:36:25,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 12:36:27,844 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 87 [2024-10-13 12:36:27,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 171 transitions, 819 flow. Second operand has 14 states, 14 states have (on average 19.714285714285715) internal successors, (276), 14 states have internal predecessors, (276), 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) [2024-10-13 12:36:27,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:36:27,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 87 [2024-10-13 12:36:27,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand