./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-multiply-verify.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 d79cb5dae664e13779624ff0ffbc531b419f89e2c7510a92e890992a52ee7c98 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 19:56:40,533 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 19:56:40,601 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-14 19:56:40,605 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 19:56:40,606 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 19:56:40,643 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 19:56:40,644 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 19:56:40,644 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 19:56:40,645 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 19:56:40,647 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 19:56:40,647 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 19:56:40,647 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 19:56:40,648 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 19:56:40,650 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 19:56:40,650 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 19:56:40,652 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 19:56:40,653 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 19:56:40,653 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 19:56:40,653 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 19:56:40,653 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 19:56:40,654 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 19:56:40,654 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 19:56:40,655 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 19:56:40,655 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 19:56:40,656 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 19:56:40,656 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 19:56:40,656 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 19:56:40,657 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 19:56:40,657 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 19:56:40,657 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 19:56:40,658 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 19:56:40,658 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 19:56:40,659 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 19:56:40,659 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:56:40,660 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 19:56:40,660 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 19:56:40,660 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 19:56:40,665 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 19:56:40,665 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 19:56:40,665 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 19:56:40,665 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 19:56:40,666 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 19:56:40,666 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d79cb5dae664e13779624ff0ffbc531b419f89e2c7510a92e890992a52ee7c98 [2024-10-14 19:56:40,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 19:56:40,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 19:56:40,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 19:56:40,944 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 19:56:40,944 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 19:56:40,945 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c [2024-10-14 19:56:42,346 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 19:56:42,589 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 19:56:42,589 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c [2024-10-14 19:56:42,597 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ebfe62f6/7244edd2944b4972804edd72d4580d35/FLAG332402106 [2024-10-14 19:56:42,918 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ebfe62f6/7244edd2944b4972804edd72d4580d35 [2024-10-14 19:56:42,921 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 19:56:42,922 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 19:56:42,924 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 19:56:42,924 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 19:56:42,928 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 19:56:42,929 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:56:42" (1/1) ... [2024-10-14 19:56:42,930 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1349446c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:42, skipping insertion in model container [2024-10-14 19:56:42,930 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:56:42" (1/1) ... [2024-10-14 19:56:42,949 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:56:43,124 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:56:43,134 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-10-14 19:56:43,134 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4d2d4784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:43, skipping insertion in model container [2024-10-14 19:56:43,135 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 19:56:43,135 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-14 19:56:43,137 INFO L158 Benchmark]: Toolchain (without parser) took 214.14ms. Allocated memory is still 153.1MB. Free memory was 119.6MB in the beginning and 109.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-14 19:56:43,137 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 153.1MB. Free memory is still 120.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 19:56:43,138 INFO L158 Benchmark]: CACSL2BoogieTranslator took 211.26ms. Allocated memory is still 153.1MB. Free memory was 119.6MB in the beginning and 109.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-14 19:56:43,139 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 153.1MB. Free memory is still 120.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 211.26ms. Allocated memory is still 153.1MB. Free memory was 119.6MB in the beginning and 109.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 119]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-multiply-verify.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 d79cb5dae664e13779624ff0ffbc531b419f89e2c7510a92e890992a52ee7c98 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 19:56:45,194 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 19:56:45,269 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-14 19:56:45,275 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 19:56:45,276 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 19:56:45,310 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 19:56:45,311 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 19:56:45,311 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 19:56:45,311 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 19:56:45,312 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 19:56:45,312 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 19:56:45,312 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 19:56:45,313 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 19:56:45,314 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 19:56:45,315 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 19:56:45,315 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 19:56:45,316 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 19:56:45,316 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 19:56:45,316 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 19:56:45,319 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 19:56:45,319 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 19:56:45,322 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 19:56:45,322 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 19:56:45,322 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 19:56:45,322 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 19:56:45,322 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-14 19:56:45,323 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 19:56:45,323 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-14 19:56:45,323 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 19:56:45,323 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 19:56:45,323 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 19:56:45,324 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 19:56:45,324 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 19:56:45,324 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 19:56:45,324 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 19:56:45,324 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:56:45,325 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 19:56:45,325 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 19:56:45,325 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-14 19:56:45,327 INFO L153 SettingsManager]: * Command for external solver=cvc5 --incremental --print-success --lang smt [2024-10-14 19:56:45,327 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 19:56:45,328 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 19:56:45,328 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 19:56:45,328 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 19:56:45,328 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-14 19:56:45,328 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d79cb5dae664e13779624ff0ffbc531b419f89e2c7510a92e890992a52ee7c98 [2024-10-14 19:56:45,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 19:56:45,672 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 19:56:45,675 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 19:56:45,676 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 19:56:45,677 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 19:56:45,679 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c [2024-10-14 19:56:47,185 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 19:56:47,426 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 19:56:47,427 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c [2024-10-14 19:56:47,440 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e95dc1e0/b62c8b2b1d3244efb3936b3f4e47e777/FLAG724258126 [2024-10-14 19:56:47,791 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e95dc1e0/b62c8b2b1d3244efb3936b3f4e47e777 [2024-10-14 19:56:47,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 19:56:47,795 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 19:56:47,798 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 19:56:47,799 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 19:56:47,805 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 19:56:47,805 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:56:47" (1/1) ... [2024-10-14 19:56:47,806 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@789f888e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:47, skipping insertion in model container [2024-10-14 19:56:47,807 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:56:47" (1/1) ... [2024-10-14 19:56:47,834 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:56:48,040 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:56:48,054 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-14 19:56:48,057 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:56:48,087 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:56:48,095 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 19:56:48,129 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:56:48,154 INFO L204 MainTranslator]: Completed translation [2024-10-14 19:56:48,154 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:48 WrapperNode [2024-10-14 19:56:48,155 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 19:56:48,156 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 19:56:48,156 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 19:56:48,156 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 19:56:48,162 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:48" (1/1) ... [2024-10-14 19:56:48,177 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:48" (1/1) ... [2024-10-14 19:56:48,212 INFO L138 Inliner]: procedures = 27, calls = 36, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 170 [2024-10-14 19:56:48,212 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 19:56:48,213 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 19:56:48,213 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 19:56:48,213 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 19:56:48,224 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:48" (1/1) ... [2024-10-14 19:56:48,224 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:48" (1/1) ... [2024-10-14 19:56:48,232 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:48" (1/1) ... [2024-10-14 19:56:48,251 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-14 19:56:48,257 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:48" (1/1) ... [2024-10-14 19:56:48,257 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:48" (1/1) ... [2024-10-14 19:56:48,268 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:48" (1/1) ... [2024-10-14 19:56:48,274 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:48" (1/1) ... [2024-10-14 19:56:48,276 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:48" (1/1) ... [2024-10-14 19:56:48,279 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:48" (1/1) ... [2024-10-14 19:56:48,284 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 19:56:48,287 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 19:56:48,288 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 19:56:48,288 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 19:56:48,289 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:48" (1/1) ... [2024-10-14 19:56:48,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:56:48,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:56:48,323 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 19:56:48,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 19:56:48,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 19:56:48,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-14 19:56:48,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-14 19:56:48,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-14 19:56:48,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-14 19:56:48,375 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-14 19:56:48,375 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-14 19:56:48,376 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-14 19:56:48,376 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-14 19:56:48,376 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-14 19:56:48,376 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-14 19:56:48,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-14 19:56:48,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-14 19:56:48,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-14 19:56:48,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 19:56:48,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 19:56:48,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-14 19:56:48,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-14 19:56:48,379 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 19:56:48,522 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 19:56:48,524 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 19:56:48,931 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 19:56:48,932 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 19:56:49,211 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 19:56:49,212 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-14 19:56:49,212 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:56:49 BoogieIcfgContainer [2024-10-14 19:56:49,212 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 19:56:49,214 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 19:56:49,215 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 19:56:49,218 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 19:56:49,218 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:56:47" (1/3) ... [2024-10-14 19:56:49,219 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40952fd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:56:49, skipping insertion in model container [2024-10-14 19:56:49,219 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:56:48" (2/3) ... [2024-10-14 19:56:49,219 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40952fd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:56:49, skipping insertion in model container [2024-10-14 19:56:49,220 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:56:49" (3/3) ... [2024-10-14 19:56:49,221 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-multiply-verify.wvr.c [2024-10-14 19:56:49,236 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 19:56:49,236 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-10-14 19:56:49,236 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 19:56:49,298 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-14 19:56:49,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 49 transitions, 119 flow [2024-10-14 19:56:49,364 INFO L124 PetriNetUnfolderBase]: 3/46 cut-off events. [2024-10-14 19:56:49,367 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-14 19:56:49,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 3/46 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 89 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2024-10-14 19:56:49,371 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 49 transitions, 119 flow [2024-10-14 19:56:49,375 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 45 transitions, 108 flow [2024-10-14 19:56:49,386 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 19:56:49,396 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;@77389c5d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 19:56:49,397 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-10-14 19:56:49,401 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 19:56:49,401 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-14 19:56:49,401 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:56:49,401 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:49,402 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 19:56:49,402 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-10-14 19:56:49,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:49,408 INFO L85 PathProgramCache]: Analyzing trace with hash 524572, now seen corresponding path program 1 times [2024-10-14 19:56:49,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:56:49,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [267498688] [2024-10-14 19:56:49,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:56:49,421 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:49,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:56:49,424 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:56:49,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-14 19:56:49,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:56:49,513 INFO L255 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 19:56:49,518 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:49,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-14 19:56:49,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:49,591 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:56:49,592 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:56:49,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [267498688] [2024-10-14 19:56:49,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [267498688] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:56:49,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:56:49,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 19:56:49,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214036808] [2024-10-14 19:56:49,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:56:49,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:56:49,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:56:49,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:56:49,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:56:49,676 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-10-14 19:56:49,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:49,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:49,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-10-14 19:56:49,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:56:50,064 INFO L124 PetriNetUnfolderBase]: 886/1433 cut-off events. [2024-10-14 19:56:50,064 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2024-10-14 19:56:50,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2898 conditions, 1433 events. 886/1433 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 7234 event pairs, 768 based on Foata normal form. 1/1098 useless extension candidates. Maximal degree in co-relation 2728. Up to 1319 conditions per place. [2024-10-14 19:56:50,078 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 28 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2024-10-14 19:56:50,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 42 transitions, 162 flow [2024-10-14 19:56:50,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:56:50,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:56:50,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-10-14 19:56:50,090 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.54421768707483 [2024-10-14 19:56:50,091 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 108 flow. Second operand 3 states and 80 transitions. [2024-10-14 19:56:50,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 42 transitions, 162 flow [2024-10-14 19:56:50,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 42 transitions, 150 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-14 19:56:50,099 INFO L231 Difference]: Finished difference. Result has 45 places, 42 transitions, 94 flow [2024-10-14 19:56:50,100 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=45, PETRI_TRANSITIONS=42} [2024-10-14 19:56:50,105 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -7 predicate places. [2024-10-14 19:56:50,105 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 42 transitions, 94 flow [2024-10-14 19:56:50,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:50,105 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:50,106 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 19:56:50,109 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-10-14 19:56:50,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:50,309 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-10-14 19:56:50,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:50,309 INFO L85 PathProgramCache]: Analyzing trace with hash 524573, now seen corresponding path program 1 times [2024-10-14 19:56:50,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:56:50,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [159846074] [2024-10-14 19:56:50,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:56:50,311 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:50,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:56:50,313 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:56:50,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-14 19:56:50,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:56:50,383 INFO L255 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 19:56:50,385 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:50,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:56:50,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:50,521 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:56:50,521 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:56:50,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [159846074] [2024-10-14 19:56:50,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [159846074] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:56:50,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:56:50,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:56:50,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956667512] [2024-10-14 19:56:50,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:56:50,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:56:50,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:56:50,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:56:50,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:56:50,579 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-10-14 19:56:50,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 42 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:50,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:50,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-10-14 19:56:50,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:56:50,939 INFO L124 PetriNetUnfolderBase]: 887/1436 cut-off events. [2024-10-14 19:56:50,939 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-10-14 19:56:50,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2824 conditions, 1436 events. 887/1436 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 7264 event pairs, 768 based on Foata normal form. 0/1100 useless extension candidates. Maximal degree in co-relation 2802. Up to 1324 conditions per place. [2024-10-14 19:56:50,950 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 30 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-10-14 19:56:50,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 45 transitions, 170 flow [2024-10-14 19:56:50,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:56:50,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:56:50,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2024-10-14 19:56:50,956 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5051020408163265 [2024-10-14 19:56:50,956 INFO L175 Difference]: Start difference. First operand has 45 places, 42 transitions, 94 flow. Second operand 4 states and 99 transitions. [2024-10-14 19:56:50,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 45 transitions, 170 flow [2024-10-14 19:56:50,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:56:50,961 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 117 flow [2024-10-14 19:56:50,962 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=117, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2024-10-14 19:56:50,962 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -4 predicate places. [2024-10-14 19:56:50,962 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 117 flow [2024-10-14 19:56:50,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:50,963 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:50,963 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-14 19:56:50,968 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-10-14 19:56:51,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:51,164 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-10-14 19:56:51,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:51,164 INFO L85 PathProgramCache]: Analyzing trace with hash 504130857, now seen corresponding path program 1 times [2024-10-14 19:56:51,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:56:51,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [292515165] [2024-10-14 19:56:51,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:56:51,165 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:51,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:56:51,168 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:56:51,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-14 19:56:51,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:56:51,229 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 19:56:51,230 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:51,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:56:51,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:51,405 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:56:51,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:51,738 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:56:51,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [292515165] [2024-10-14 19:56:51,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [292515165] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:56:51,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:56:51,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-14 19:56:51,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586308361] [2024-10-14 19:56:51,739 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:56:51,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 19:56:51,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:56:51,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 19:56:51,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-14 19:56:51,941 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-10-14 19:56:51,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 117 flow. Second operand has 10 states, 10 states have (on average 17.0) internal successors, (170), 10 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:51,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:51,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-10-14 19:56:51,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:56:52,595 INFO L124 PetriNetUnfolderBase]: 890/1445 cut-off events. [2024-10-14 19:56:52,595 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-10-14 19:56:52,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2861 conditions, 1445 events. 890/1445 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 7289 event pairs, 768 based on Foata normal form. 0/1105 useless extension candidates. Maximal degree in co-relation 2809. Up to 1327 conditions per place. [2024-10-14 19:56:52,605 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 30 selfloop transitions, 13 changer transitions 0/54 dead transitions. [2024-10-14 19:56:52,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 54 transitions, 239 flow [2024-10-14 19:56:52,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 19:56:52,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-14 19:56:52,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 206 transitions. [2024-10-14 19:56:52,609 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4204081632653061 [2024-10-14 19:56:52,609 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 117 flow. Second operand 10 states and 206 transitions. [2024-10-14 19:56:52,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 54 transitions, 239 flow [2024-10-14 19:56:52,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 54 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 19:56:52,613 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 194 flow [2024-10-14 19:56:52,613 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=194, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2024-10-14 19:56:52,615 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 7 predicate places. [2024-10-14 19:56:52,615 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 194 flow [2024-10-14 19:56:52,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.0) internal successors, (170), 10 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:52,616 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:52,616 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-14 19:56:52,621 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 (4)] Forceful destruction successful, exit code 0 [2024-10-14 19:56:52,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:52,819 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-10-14 19:56:52,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:52,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1548629745, now seen corresponding path program 1 times [2024-10-14 19:56:52,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:56:52,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1720372222] [2024-10-14 19:56:52,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:56:52,821 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:52,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:56:52,822 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:56:52,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-14 19:56:52,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:56:52,872 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 19:56:52,873 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:52,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-14 19:56:52,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:52,897 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:56:52,897 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:56:52,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1720372222] [2024-10-14 19:56:52,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1720372222] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:56:52,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:56:52,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:56:52,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044931518] [2024-10-14 19:56:52,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:56:52,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:56:52,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:56:52,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:56:52,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:56:52,930 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-10-14 19:56:52,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 194 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:52,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:52,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-10-14 19:56:52,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:56:53,150 INFO L124 PetriNetUnfolderBase]: 855/1388 cut-off events. [2024-10-14 19:56:53,150 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-10-14 19:56:53,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2747 conditions, 1388 events. 855/1388 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6296 event pairs, 724 based on Foata normal form. 0/1228 useless extension candidates. Maximal degree in co-relation 2713. Up to 1257 conditions per place. [2024-10-14 19:56:53,160 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 35 selfloop transitions, 6 changer transitions 0/50 dead transitions. [2024-10-14 19:56:53,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 50 transitions, 268 flow [2024-10-14 19:56:53,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:56:53,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:56:53,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2024-10-14 19:56:53,163 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4336734693877551 [2024-10-14 19:56:53,163 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 194 flow. Second operand 4 states and 85 transitions. [2024-10-14 19:56:53,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 50 transitions, 268 flow [2024-10-14 19:56:53,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 50 transitions, 238 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-10-14 19:56:53,165 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 168 flow [2024-10-14 19:56:53,166 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2024-10-14 19:56:53,166 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2024-10-14 19:56:53,166 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 168 flow [2024-10-14 19:56:53,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:53,167 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:53,167 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-14 19:56:53,174 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-10-14 19:56:53,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:53,370 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-10-14 19:56:53,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:53,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1548629744, now seen corresponding path program 1 times [2024-10-14 19:56:53,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:56:53,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1769065137] [2024-10-14 19:56:53,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:56:53,371 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:53,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:56:53,373 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:56:53,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-10-14 19:56:53,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:56:53,428 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 19:56:53,429 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:53,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:53,470 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:56:53,470 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:56:53,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1769065137] [2024-10-14 19:56:53,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1769065137] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:56:53,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:56:53,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:56:53,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696588417] [2024-10-14 19:56:53,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:56:53,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:56:53,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:56:53,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:56:53,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:56:53,480 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-10-14 19:56:53,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:53,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:53,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-10-14 19:56:53,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:56:53,714 INFO L124 PetriNetUnfolderBase]: 731/1200 cut-off events. [2024-10-14 19:56:53,715 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-10-14 19:56:53,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2403 conditions, 1200 events. 731/1200 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5448 event pairs, 600 based on Foata normal form. 35/1088 useless extension candidates. Maximal degree in co-relation 2372. Up to 994 conditions per place. [2024-10-14 19:56:53,721 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 37 selfloop transitions, 2 changer transitions 13/62 dead transitions. [2024-10-14 19:56:53,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 62 transitions, 299 flow [2024-10-14 19:56:53,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:56:53,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:56:53,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-10-14 19:56:53,723 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5918367346938775 [2024-10-14 19:56:53,723 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 168 flow. Second operand 4 states and 116 transitions. [2024-10-14 19:56:53,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 62 transitions, 299 flow [2024-10-14 19:56:53,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 62 transitions, 292 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:56:53,725 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 170 flow [2024-10-14 19:56:53,726 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=170, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2024-10-14 19:56:53,726 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 5 predicate places. [2024-10-14 19:56:53,726 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 170 flow [2024-10-14 19:56:53,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:53,727 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:53,727 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:56:53,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2024-10-14 19:56:53,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:53,931 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-10-14 19:56:53,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:53,931 INFO L85 PathProgramCache]: Analyzing trace with hash -934588028, now seen corresponding path program 1 times [2024-10-14 19:56:53,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:56:53,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1158372216] [2024-10-14 19:56:53,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:56:53,932 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:53,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:56:53,936 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:56:53,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-10-14 19:56:53,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:56:53,993 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-14 19:56:53,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:54,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:56:54,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:54,226 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:56:54,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:54,804 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:56:54,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1158372216] [2024-10-14 19:56:54,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1158372216] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:56:54,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:56:54,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-14 19:56:54,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128883551] [2024-10-14 19:56:54,805 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:56:54,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 19:56:54,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:56:54,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 19:56:54,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-14 19:56:55,802 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-10-14 19:56:55,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 170 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:55,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:55,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-10-14 19:56:55,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:56:57,264 INFO L124 PetriNetUnfolderBase]: 1313/2154 cut-off events. [2024-10-14 19:56:57,265 INFO L125 PetriNetUnfolderBase]: For 291/291 co-relation queries the response was YES. [2024-10-14 19:56:57,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4759 conditions, 2154 events. 1313/2154 cut-off events. For 291/291 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 10657 event pairs, 1082 based on Foata normal form. 41/2028 useless extension candidates. Maximal degree in co-relation 4738. Up to 984 conditions per place. [2024-10-14 19:56:57,276 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 51 selfloop transitions, 10 changer transitions 19/89 dead transitions. [2024-10-14 19:56:57,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 89 transitions, 431 flow [2024-10-14 19:56:57,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 19:56:57,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 19:56:57,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 228 transitions. [2024-10-14 19:56:57,282 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5170068027210885 [2024-10-14 19:56:57,282 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 170 flow. Second operand 9 states and 228 transitions. [2024-10-14 19:56:57,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 89 transitions, 431 flow [2024-10-14 19:56:57,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 89 transitions, 427 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:56:57,287 INFO L231 Difference]: Finished difference. Result has 64 places, 48 transitions, 193 flow [2024-10-14 19:56:57,287 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=193, PETRI_PLACES=64, PETRI_TRANSITIONS=48} [2024-10-14 19:56:57,288 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 12 predicate places. [2024-10-14 19:56:57,289 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 48 transitions, 193 flow [2024-10-14 19:56:57,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:57,290 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:57,290 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-14 19:56:57,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2024-10-14 19:56:57,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:57,491 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-10-14 19:56:57,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:57,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1644937037, now seen corresponding path program 2 times [2024-10-14 19:56:57,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:56:57,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1243172599] [2024-10-14 19:56:57,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:56:57,492 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:57,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:56:57,493 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:56:57,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-10-14 19:56:57,567 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:56:57,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:56:57,569 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 19:56:57,570 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:57,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:56:57,850 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:57,851 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:56:58,459 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:58,460 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:56:58,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1243172599] [2024-10-14 19:56:58,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1243172599] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:56:58,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:56:58,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-14 19:56:58,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969826294] [2024-10-14 19:56:58,460 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:56:58,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-14 19:56:58,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:56:58,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-14 19:56:58,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-14 19:56:59,091 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-10-14 19:56:59,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 48 transitions, 193 flow. Second operand has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 14 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:59,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:59,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-10-14 19:56:59,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:57:01,380 INFO L124 PetriNetUnfolderBase]: 1128/1824 cut-off events. [2024-10-14 19:57:01,381 INFO L125 PetriNetUnfolderBase]: For 847/847 co-relation queries the response was YES. [2024-10-14 19:57:01,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4452 conditions, 1824 events. 1128/1824 cut-off events. For 847/847 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9153 event pairs, 934 based on Foata normal form. 6/1719 useless extension candidates. Maximal degree in co-relation 4414. Up to 1687 conditions per place. [2024-10-14 19:57:01,391 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 28 selfloop transitions, 29 changer transitions 0/66 dead transitions. [2024-10-14 19:57:01,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 66 transitions, 421 flow [2024-10-14 19:57:01,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-14 19:57:01,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-14 19:57:01,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 415 transitions. [2024-10-14 19:57:01,394 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3849721706864564 [2024-10-14 19:57:01,394 INFO L175 Difference]: Start difference. First operand has 64 places, 48 transitions, 193 flow. Second operand 22 states and 415 transitions. [2024-10-14 19:57:01,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 66 transitions, 421 flow [2024-10-14 19:57:01,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 66 transitions, 406 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-10-14 19:57:01,404 INFO L231 Difference]: Finished difference. Result has 85 places, 66 transitions, 380 flow [2024-10-14 19:57:01,404 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=380, PETRI_PLACES=85, PETRI_TRANSITIONS=66} [2024-10-14 19:57:01,404 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 33 predicate places. [2024-10-14 19:57:01,404 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 66 transitions, 380 flow [2024-10-14 19:57:01,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 14 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:01,405 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:57:01,405 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1] [2024-10-14 19:57:01,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2024-10-14 19:57:01,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:01,610 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-10-14 19:57:01,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:57:01,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1253892896, now seen corresponding path program 2 times [2024-10-14 19:57:01,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:57:01,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1828385454] [2024-10-14 19:57:01,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:57:01,611 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:01,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:57:01,612 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:57:01,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-10-14 19:57:01,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 19:57:01,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:57:01,677 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 19:57:01,679 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:57:01,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:57:01,811 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-14 19:57:01,812 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:57:01,812 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:57:01,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1828385454] [2024-10-14 19:57:01,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1828385454] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:57:01,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:57:01,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:57:01,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767814576] [2024-10-14 19:57:01,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:57:01,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:57:01,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:57:01,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:57:01,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:57:01,853 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-10-14 19:57:01,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 66 transitions, 380 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:01,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:57:01,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-10-14 19:57:01,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:57:02,076 INFO L124 PetriNetUnfolderBase]: 934/1537 cut-off events. [2024-10-14 19:57:02,076 INFO L125 PetriNetUnfolderBase]: For 426/426 co-relation queries the response was YES. [2024-10-14 19:57:02,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3434 conditions, 1537 events. 934/1537 cut-off events. For 426/426 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 7538 event pairs, 756 based on Foata normal form. 85/1516 useless extension candidates. Maximal degree in co-relation 3384. Up to 1395 conditions per place. [2024-10-14 19:57:02,086 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 44 selfloop transitions, 10 changer transitions 0/64 dead transitions. [2024-10-14 19:57:02,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 64 transitions, 476 flow [2024-10-14 19:57:02,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:57:02,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:57:02,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-10-14 19:57:02,088 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-10-14 19:57:02,088 INFO L175 Difference]: Start difference. First operand has 85 places, 66 transitions, 380 flow. Second operand 4 states and 96 transitions. [2024-10-14 19:57:02,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 64 transitions, 476 flow [2024-10-14 19:57:02,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 64 transitions, 398 flow, removed 27 selfloop flow, removed 10 redundant places. [2024-10-14 19:57:02,092 INFO L231 Difference]: Finished difference. Result has 76 places, 64 transitions, 310 flow [2024-10-14 19:57:02,092 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=310, PETRI_PLACES=76, PETRI_TRANSITIONS=64} [2024-10-14 19:57:02,093 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 24 predicate places. [2024-10-14 19:57:02,093 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 64 transitions, 310 flow [2024-10-14 19:57:02,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:02,093 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:57:02,093 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:57:02,097 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-10-14 19:57:02,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:02,294 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-10-14 19:57:02,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:57:02,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1388094242, now seen corresponding path program 1 times [2024-10-14 19:57:02,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:57:02,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1296120343] [2024-10-14 19:57:02,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:57:02,295 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:02,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:57:02,296 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:57:02,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-10-14 19:57:02,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:57:02,377 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-14 19:57:02,379 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:57:02,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:57:02,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-10-14 19:57:02,638 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:57:02,639 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:57:03,004 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:57:03,004 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:57:03,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1296120343] [2024-10-14 19:57:03,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1296120343] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:57:03,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:57:03,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2024-10-14 19:57:03,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445663851] [2024-10-14 19:57:03,005 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:57:03,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 19:57:03,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:57:03,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 19:57:03,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-10-14 19:57:03,288 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-10-14 19:57:03,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 64 transitions, 310 flow. Second operand has 10 states, 10 states have (on average 19.4) internal successors, (194), 10 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:03,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:57:03,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-10-14 19:57:03,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:57:03,720 INFO L124 PetriNetUnfolderBase]: 883/1630 cut-off events. [2024-10-14 19:57:03,720 INFO L125 PetriNetUnfolderBase]: For 277/284 co-relation queries the response was YES. [2024-10-14 19:57:03,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3459 conditions, 1630 events. 883/1630 cut-off events. For 277/284 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 8711 event pairs, 248 based on Foata normal form. 72/1621 useless extension candidates. Maximal degree in co-relation 3416. Up to 880 conditions per place. [2024-10-14 19:57:03,727 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 75 selfloop transitions, 9 changer transitions 0/94 dead transitions. [2024-10-14 19:57:03,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 94 transitions, 552 flow [2024-10-14 19:57:03,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 19:57:03,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 19:57:03,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-10-14 19:57:03,730 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5364431486880467 [2024-10-14 19:57:03,730 INFO L175 Difference]: Start difference. First operand has 76 places, 64 transitions, 310 flow. Second operand 7 states and 184 transitions. [2024-10-14 19:57:03,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 94 transitions, 552 flow [2024-10-14 19:57:03,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 94 transitions, 541 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:57:03,733 INFO L231 Difference]: Finished difference. Result has 82 places, 68 transitions, 349 flow [2024-10-14 19:57:03,734 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=349, PETRI_PLACES=82, PETRI_TRANSITIONS=68} [2024-10-14 19:57:03,734 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 30 predicate places. [2024-10-14 19:57:03,734 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 68 transitions, 349 flow [2024-10-14 19:57:03,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 19.4) internal successors, (194), 10 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:03,735 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:57:03,735 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:57:03,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2024-10-14 19:57:03,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:03,936 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-10-14 19:57:03,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:57:03,936 INFO L85 PathProgramCache]: Analyzing trace with hash 252555195, now seen corresponding path program 1 times [2024-10-14 19:57:03,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:57:03,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1139717513] [2024-10-14 19:57:03,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:57:03,937 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:03,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:57:03,938 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:57:03,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-10-14 19:57:04,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:57:04,016 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-14 19:57:04,018 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:57:04,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:57:04,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2024-10-14 19:57:04,357 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:57:04,358 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:57:05,107 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:57:05,108 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:57:05,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1139717513] [2024-10-14 19:57:05,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1139717513] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:57:05,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:57:05,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2024-10-14 19:57:05,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672015742] [2024-10-14 19:57:05,108 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:57:05,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-14 19:57:05,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:57:05,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-14 19:57:05,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2024-10-14 19:57:05,444 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-10-14 19:57:05,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 68 transitions, 349 flow. Second operand has 14 states, 14 states have (on average 19.428571428571427) internal successors, (272), 14 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:05,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:57:05,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-10-14 19:57:05,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:57:06,344 INFO L124 PetriNetUnfolderBase]: 655/1205 cut-off events. [2024-10-14 19:57:06,344 INFO L125 PetriNetUnfolderBase]: For 735/746 co-relation queries the response was YES. [2024-10-14 19:57:06,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2938 conditions, 1205 events. 655/1205 cut-off events. For 735/746 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5682 event pairs, 132 based on Foata normal form. 60/1217 useless extension candidates. Maximal degree in co-relation 2892. Up to 292 conditions per place. [2024-10-14 19:57:06,357 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 95 selfloop transitions, 20 changer transitions 0/125 dead transitions. [2024-10-14 19:57:06,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 125 transitions, 740 flow [2024-10-14 19:57:06,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 19:57:06,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-14 19:57:06,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 282 transitions. [2024-10-14 19:57:06,360 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5231910946196661 [2024-10-14 19:57:06,360 INFO L175 Difference]: Start difference. First operand has 82 places, 68 transitions, 349 flow. Second operand 11 states and 282 transitions. [2024-10-14 19:57:06,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 125 transitions, 740 flow [2024-10-14 19:57:06,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 125 transitions, 717 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-10-14 19:57:06,365 INFO L231 Difference]: Finished difference. Result has 92 places, 75 transitions, 438 flow [2024-10-14 19:57:06,365 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=438, PETRI_PLACES=92, PETRI_TRANSITIONS=75} [2024-10-14 19:57:06,367 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 40 predicate places. [2024-10-14 19:57:06,367 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 75 transitions, 438 flow [2024-10-14 19:57:06,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 19.428571428571427) internal successors, (272), 14 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:06,368 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:57:06,368 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:57:06,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2024-10-14 19:57:06,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:06,569 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-10-14 19:57:06,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:57:06,569 INFO L85 PathProgramCache]: Analyzing trace with hash 424953555, now seen corresponding path program 1 times [2024-10-14 19:57:06,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:57:06,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [744057789] [2024-10-14 19:57:06,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:57:06,570 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:06,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:57:06,571 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:57:06,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-10-14 19:57:06,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:57:06,643 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-14 19:57:06,645 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:57:06,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:57:07,089 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:57:07,089 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:57:08,026 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:57:08,027 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:57:08,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [744057789] [2024-10-14 19:57:08,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [744057789] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:57:08,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:57:08,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-14 19:57:08,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673327248] [2024-10-14 19:57:08,027 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:57:08,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-14 19:57:08,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:57:08,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-14 19:57:08,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2024-10-14 19:57:08,426 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-10-14 19:57:08,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 75 transitions, 438 flow. Second operand has 14 states, 14 states have (on average 15.714285714285714) internal successors, (220), 14 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:08,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:57:08,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-10-14 19:57:08,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:57:10,310 INFO L124 PetriNetUnfolderBase]: 989/1720 cut-off events. [2024-10-14 19:57:10,310 INFO L125 PetriNetUnfolderBase]: For 1449/1456 co-relation queries the response was YES. [2024-10-14 19:57:10,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4408 conditions, 1720 events. 989/1720 cut-off events. For 1449/1456 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 7981 event pairs, 370 based on Foata normal form. 4/1665 useless extension candidates. Maximal degree in co-relation 4357. Up to 373 conditions per place. [2024-10-14 19:57:10,319 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 112 selfloop transitions, 34 changer transitions 0/152 dead transitions. [2024-10-14 19:57:10,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 152 transitions, 949 flow [2024-10-14 19:57:10,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-14 19:57:10,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-14 19:57:10,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 311 transitions. [2024-10-14 19:57:10,322 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45335276967930027 [2024-10-14 19:57:10,322 INFO L175 Difference]: Start difference. First operand has 92 places, 75 transitions, 438 flow. Second operand 14 states and 311 transitions. [2024-10-14 19:57:10,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 152 transitions, 949 flow [2024-10-14 19:57:10,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 152 transitions, 905 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-10-14 19:57:10,330 INFO L231 Difference]: Finished difference. Result has 106 places, 80 transitions, 563 flow [2024-10-14 19:57:10,330 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=563, PETRI_PLACES=106, PETRI_TRANSITIONS=80} [2024-10-14 19:57:10,330 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 54 predicate places. [2024-10-14 19:57:10,331 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 80 transitions, 563 flow [2024-10-14 19:57:10,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.714285714285714) internal successors, (220), 14 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:10,331 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:57:10,331 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:57:10,336 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2024-10-14 19:57:10,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:10,532 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-10-14 19:57:10,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:57:10,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1092545836, now seen corresponding path program 1 times [2024-10-14 19:57:10,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:57:10,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1949780488] [2024-10-14 19:57:10,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:57:10,533 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:10,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:57:10,534 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:57:10,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-10-14 19:57:10,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:57:10,615 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-14 19:57:10,616 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:57:10,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:57:11,102 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:57:11,102 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:57:12,402 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:57:12,402 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:57:12,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1949780488] [2024-10-14 19:57:12,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1949780488] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:57:12,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:57:12,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2024-10-14 19:57:12,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304493407] [2024-10-14 19:57:12,402 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:57:12,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-14 19:57:12,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:57:12,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-14 19:57:12,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2024-10-14 19:57:13,207 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-10-14 19:57:13,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 80 transitions, 563 flow. Second operand has 16 states, 16 states have (on average 16.625) internal successors, (266), 16 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:13,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:57:13,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-10-14 19:57:13,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:57:15,760 INFO L124 PetriNetUnfolderBase]: 1158/2081 cut-off events. [2024-10-14 19:57:15,761 INFO L125 PetriNetUnfolderBase]: For 2564/2568 co-relation queries the response was YES. [2024-10-14 19:57:15,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5496 conditions, 2081 events. 1158/2081 cut-off events. For 2564/2568 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 10202 event pairs, 612 based on Foata normal form. 26/2061 useless extension candidates. Maximal degree in co-relation 5438. Up to 698 conditions per place. [2024-10-14 19:57:15,772 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 117 selfloop transitions, 30 changer transitions 0/155 dead transitions. [2024-10-14 19:57:15,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 155 transitions, 1066 flow [2024-10-14 19:57:15,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-14 19:57:15,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-14 19:57:15,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 356 transitions. [2024-10-14 19:57:15,776 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45408163265306123 [2024-10-14 19:57:15,776 INFO L175 Difference]: Start difference. First operand has 106 places, 80 transitions, 563 flow. Second operand 16 states and 356 transitions. [2024-10-14 19:57:15,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 155 transitions, 1066 flow [2024-10-14 19:57:15,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 155 transitions, 1028 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-10-14 19:57:15,786 INFO L231 Difference]: Finished difference. Result has 118 places, 84 transitions, 650 flow [2024-10-14 19:57:15,786 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=650, PETRI_PLACES=118, PETRI_TRANSITIONS=84} [2024-10-14 19:57:15,786 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 66 predicate places. [2024-10-14 19:57:15,787 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 84 transitions, 650 flow [2024-10-14 19:57:15,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 16.625) internal successors, (266), 16 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:15,787 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:57:15,787 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1] [2024-10-14 19:57:15,792 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 (13)] Forceful destruction successful, exit code 0 [2024-10-14 19:57:15,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:15,988 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-10-14 19:57:15,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:57:15,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1512514197, now seen corresponding path program 3 times [2024-10-14 19:57:15,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:57:15,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1827641317] [2024-10-14 19:57:15,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 19:57:15,989 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:15,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:57:15,990 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:57:15,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-10-14 19:57:16,158 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-10-14 19:57:16,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:57:16,161 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-14 19:57:16,162 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:57:16,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:57:16,596 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:57:16,596 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:57:18,189 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:57:18,189 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:57:18,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1827641317] [2024-10-14 19:57:18,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1827641317] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:57:18,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:57:18,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2024-10-14 19:57:18,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166413338] [2024-10-14 19:57:18,190 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:57:18,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-14 19:57:18,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:57:18,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-14 19:57:18,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=477, Unknown=0, NotChecked=0, Total=650 [2024-10-14 19:57:19,751 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-10-14 19:57:19,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 84 transitions, 650 flow. Second operand has 26 states, 26 states have (on average 17.76923076923077) internal successors, (462), 26 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:19,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:57:19,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-10-14 19:57:19,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:57:33,283 INFO L124 PetriNetUnfolderBase]: 1121/2031 cut-off events. [2024-10-14 19:57:33,283 INFO L125 PetriNetUnfolderBase]: For 3964/3964 co-relation queries the response was YES. [2024-10-14 19:57:33,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5859 conditions, 2031 events. 1121/2031 cut-off events. For 3964/3964 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 9869 event pairs, 828 based on Foata normal form. 12/1978 useless extension candidates. Maximal degree in co-relation 5795. Up to 1794 conditions per place. [2024-10-14 19:57:33,293 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 45 selfloop transitions, 65 changer transitions 0/120 dead transitions. [2024-10-14 19:57:33,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 120 transitions, 1230 flow [2024-10-14 19:57:33,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-10-14 19:57:33,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-10-14 19:57:33,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 839 transitions. [2024-10-14 19:57:33,298 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37222715173025733 [2024-10-14 19:57:33,298 INFO L175 Difference]: Start difference. First operand has 118 places, 84 transitions, 650 flow. Second operand 46 states and 839 transitions. [2024-10-14 19:57:33,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 120 transitions, 1230 flow [2024-10-14 19:57:33,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 120 transitions, 1161 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-10-14 19:57:33,311 INFO L231 Difference]: Finished difference. Result has 163 places, 120 transitions, 1125 flow [2024-10-14 19:57:33,312 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=1125, PETRI_PLACES=163, PETRI_TRANSITIONS=120} [2024-10-14 19:57:33,312 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 111 predicate places. [2024-10-14 19:57:33,313 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 120 transitions, 1125 flow [2024-10-14 19:57:33,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 17.76923076923077) internal successors, (462), 26 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:33,314 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:57:33,314 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:57:33,320 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2024-10-14 19:57:33,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:33,515 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-10-14 19:57:33,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:57:33,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1297453217, now seen corresponding path program 2 times [2024-10-14 19:57:33,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:57:33,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1127473410] [2024-10-14 19:57:33,516 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:57:33,516 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:33,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:57:33,519 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:57:33,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-10-14 19:57:33,608 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 19:57:33,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:57:33,609 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 19:57:33,611 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:57:33,762 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-14 19:57:33,762 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:57:33,762 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:57:33,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1127473410] [2024-10-14 19:57:33,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1127473410] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:57:33,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:57:33,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:57:33,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198759096] [2024-10-14 19:57:33,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:57:33,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:57:33,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:57:33,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:57:33,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:57:33,833 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-10-14 19:57:33,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 120 transitions, 1125 flow. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:33,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:57:33,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-10-14 19:57:33,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:57:34,177 INFO L124 PetriNetUnfolderBase]: 1186/2070 cut-off events. [2024-10-14 19:57:34,177 INFO L125 PetriNetUnfolderBase]: For 2385/2392 co-relation queries the response was YES. [2024-10-14 19:57:34,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5769 conditions, 2070 events. 1186/2070 cut-off events. For 2385/2392 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 9822 event pairs, 414 based on Foata normal form. 26/2041 useless extension candidates. Maximal degree in co-relation 5683. Up to 1327 conditions per place. [2024-10-14 19:57:34,215 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 90 selfloop transitions, 32 changer transitions 0/130 dead transitions. [2024-10-14 19:57:34,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 130 transitions, 1387 flow [2024-10-14 19:57:34,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:57:34,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:57:34,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2024-10-14 19:57:34,217 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47346938775510206 [2024-10-14 19:57:34,217 INFO L175 Difference]: Start difference. First operand has 163 places, 120 transitions, 1125 flow. Second operand 5 states and 116 transitions. [2024-10-14 19:57:34,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 130 transitions, 1387 flow [2024-10-14 19:57:34,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 130 transitions, 1222 flow, removed 51 selfloop flow, removed 22 redundant places. [2024-10-14 19:57:34,231 INFO L231 Difference]: Finished difference. Result has 144 places, 119 transitions, 1018 flow [2024-10-14 19:57:34,231 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=954, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1018, PETRI_PLACES=144, PETRI_TRANSITIONS=119} [2024-10-14 19:57:34,231 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 92 predicate places. [2024-10-14 19:57:34,232 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 119 transitions, 1018 flow [2024-10-14 19:57:34,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:57:34,232 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:57:34,232 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:57:34,239 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2024-10-14 19:57:34,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:34,433 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-10-14 19:57:34,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:57:34,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1130562382, now seen corresponding path program 1 times [2024-10-14 19:57:34,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:57:34,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1207494342] [2024-10-14 19:57:34,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:57:34,434 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:57:34,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:57:34,435 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:57:34,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2024-10-14 19:57:34,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:57:34,534 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-14 19:57:34,535 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:57:34,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:57:34,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-10-14 19:57:35,284 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:57:35,285 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:57:36,128 INFO L349 Elim1Store]: treesize reduction 672, result has 23.7 percent of original size [2024-10-14 19:57:36,128 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 178 treesize of output 244