./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i -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 f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 09:42:22,823 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 09:42:22,882 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-19 09:42:22,886 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 09:42:22,886 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 09:42:22,909 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 09:42:22,909 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 09:42:22,909 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 09:42:22,910 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 09:42:22,910 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 09:42:22,931 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 09:42:22,933 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 09:42:22,934 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 09:42:22,934 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 09:42:22,935 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 09:42:22,935 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 09:42:22,937 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 09:42:22,937 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 09:42:22,937 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 09:42:22,937 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 09:42:22,938 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 09:42:22,938 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 09:42:22,941 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 09:42:22,941 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 09:42:22,941 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 09:42:22,942 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 09:42:22,942 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 09:42:22,942 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 09:42:22,942 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 09:42:22,942 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 09:42:22,943 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 09:42:22,943 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 09:42:22,943 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 09:42:22,943 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:42:22,943 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 09:42:22,943 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 09:42:22,943 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 09:42:22,944 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 09:42:22,944 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 09:42:22,944 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 09:42:22,944 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 09:42:22,944 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 09:42:22,945 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af [2024-11-19 09:42:23,187 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 09:42:23,214 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 09:42:23,218 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 09:42:23,219 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 09:42:23,219 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 09:42:23,220 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2024-11-19 09:42:24,567 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 09:42:24,786 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 09:42:24,790 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2024-11-19 09:42:24,811 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a25a42b7/816159e45513409ba4d2646fee5adf14/FLAG3a25ceabc [2024-11-19 09:42:25,127 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a25a42b7/816159e45513409ba4d2646fee5adf14 [2024-11-19 09:42:25,129 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 09:42:25,130 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 09:42:25,132 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 09:42:25,132 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 09:42:25,137 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 09:42:25,139 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:42:25" (1/1) ... [2024-11-19 09:42:25,140 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@435a1e6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:42:25, skipping insertion in model container [2024-11-19 09:42:25,140 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:42:25" (1/1) ... [2024-11-19 09:42:25,187 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 09:42:25,521 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-19 09:42:25,522 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-19 09:42:25,522 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-19 09:42:25,523 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-19 09:42:25,554 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:42:25,592 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) [2024-11-19 09:42:25,593 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7ee2b31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:42:25, skipping insertion in model container [2024-11-19 09:42:25,593 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 09:42:25,594 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-19 09:42:25,597 INFO L158 Benchmark]: Toolchain (without parser) took 464.24ms. Allocated memory is still 153.1MB. Free memory was 79.4MB in the beginning and 58.7MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-19 09:42:25,597 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 153.1MB. Free memory is still 119.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 09:42:25,598 INFO L158 Benchmark]: CACSL2BoogieTranslator took 461.86ms. Allocated memory is still 153.1MB. Free memory was 79.0MB in the beginning and 58.7MB in the end (delta: 20.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-19 09:42:25,599 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 153.1MB. Free memory is still 119.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 461.86ms. Allocated memory is still 153.1MB. Free memory was 79.0MB in the beginning and 58.7MB in the end (delta: 20.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1044]: 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/11.0.12-open/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 ../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i -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 f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 09:42:27,472 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 09:42:27,531 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-19 09:42:27,535 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 09:42:27,538 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 09:42:27,565 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 09:42:27,569 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 09:42:27,570 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 09:42:27,570 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 09:42:27,571 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 09:42:27,571 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 09:42:27,571 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 09:42:27,572 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 09:42:27,572 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 09:42:27,573 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 09:42:27,574 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 09:42:27,575 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 09:42:27,575 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 09:42:27,575 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 09:42:27,575 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 09:42:27,579 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 09:42:27,579 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 09:42:27,579 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 09:42:27,579 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 09:42:27,579 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 09:42:27,579 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-19 09:42:27,580 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 09:42:27,580 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-19 09:42:27,580 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 09:42:27,580 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 09:42:27,580 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 09:42:27,580 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 09:42:27,580 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 09:42:27,581 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 09:42:27,581 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 09:42:27,581 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:42:27,581 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 09:42:27,582 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 09:42:27,582 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-19 09:42:27,582 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-19 09:42:27,583 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 09:42:27,583 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 09:42:27,583 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 09:42:27,583 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 09:42:27,584 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af [2024-11-19 09:42:27,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 09:42:27,904 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 09:42:27,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 09:42:27,907 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 09:42:27,908 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 09:42:27,909 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2024-11-19 09:42:29,332 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 09:42:29,576 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 09:42:29,577 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2024-11-19 09:42:29,595 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32dadd472/dfca893ccd0f4370af6b0794b1ca053c/FLAG7cfed9902 [2024-11-19 09:42:29,607 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32dadd472/dfca893ccd0f4370af6b0794b1ca053c [2024-11-19 09:42:29,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 09:42:29,610 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 09:42:29,611 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 09:42:29,611 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 09:42:29,615 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 09:42:29,616 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:42:29" (1/1) ... [2024-11-19 09:42:29,617 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@538e09fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:42:29, skipping insertion in model container [2024-11-19 09:42:29,617 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:42:29" (1/1) ... [2024-11-19 09:42:29,655 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 09:42:30,044 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-19 09:42:30,045 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-19 09:42:30,045 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-19 09:42:30,045 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-19 09:42:30,089 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:42:30,128 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-19 09:42:30,135 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 09:42:30,195 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-19 09:42:30,196 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-19 09:42:30,196 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-19 09:42:30,196 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-19 09:42:30,212 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:42:30,244 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 09:42:30,287 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-19 09:42:30,287 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-19 09:42:30,287 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-19 09:42:30,288 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-19 09:42:30,304 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:42:30,366 INFO L204 MainTranslator]: Completed translation [2024-11-19 09:42:30,366 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:42:30 WrapperNode [2024-11-19 09:42:30,366 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 09:42:30,367 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 09:42:30,367 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 09:42:30,368 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 09:42:30,374 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:42:30" (1/1) ... [2024-11-19 09:42:30,405 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:42:30" (1/1) ... [2024-11-19 09:42:30,447 INFO L138 Inliner]: procedures = 284, calls = 143, calls flagged for inlining = 11, calls inlined = 12, statements flattened = 395 [2024-11-19 09:42:30,451 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 09:42:30,452 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 09:42:30,452 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 09:42:30,452 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 09:42:30,467 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:42:30" (1/1) ... [2024-11-19 09:42:30,467 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:42:30" (1/1) ... [2024-11-19 09:42:30,476 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:42:30" (1/1) ... [2024-11-19 09:42:30,519 INFO L175 MemorySlicer]: Split 105 memory accesses to 5 slices as follows [2, 5, 94, 2, 2]. 90 percent of accesses are in the largest equivalence class. The 77 initializations are split as follows [2, 5, 70, 0, 0]. The 15 writes are split as follows [0, 0, 13, 1, 1]. [2024-11-19 09:42:30,521 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:42:30" (1/1) ... [2024-11-19 09:42:30,521 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:42:30" (1/1) ... [2024-11-19 09:42:30,559 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:42:30" (1/1) ... [2024-11-19 09:42:30,564 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:42:30" (1/1) ... [2024-11-19 09:42:30,567 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:42:30" (1/1) ... [2024-11-19 09:42:30,569 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:42:30" (1/1) ... [2024-11-19 09:42:30,574 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 09:42:30,574 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 09:42:30,575 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 09:42:30,575 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 09:42:30,575 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:42:30" (1/1) ... [2024-11-19 09:42:30,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:42:30,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:42:30,609 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) [2024-11-19 09:42:30,616 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 [2024-11-19 09:42:30,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-19 09:42:30,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-19 09:42:30,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-19 09:42:30,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2024-11-19 09:42:30,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2024-11-19 09:42:30,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-19 09:42:30,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-19 09:42:30,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-19 09:42:30,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-19 09:42:30,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-19 09:42:30,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-19 09:42:30,656 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2024-11-19 09:42:30,656 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2024-11-19 09:42:30,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 09:42:30,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-19 09:42:30,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-19 09:42:30,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-19 09:42:30,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2024-11-19 09:42:30,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2024-11-19 09:42:30,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-19 09:42:30,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-19 09:42:30,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-19 09:42:30,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-19 09:42:30,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-19 09:42:30,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-19 09:42:30,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-19 09:42:30,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-19 09:42:30,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-11-19 09:42:30,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2024-11-19 09:42:30,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-11-19 09:42:30,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2024-11-19 09:42:30,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2024-11-19 09:42:30,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2024-11-19 09:42:30,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2024-11-19 09:42:30,661 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-19 09:42:30,661 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-11-19 09:42:30,661 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-11-19 09:42:30,661 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-19 09:42:30,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 09:42:30,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 09:42:30,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-19 09:42:30,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-19 09:42:30,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-19 09:42:30,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-19 09:42:30,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-19 09:42:30,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 09:42:30,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 09:42:30,664 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 09:42:30,866 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 09:42:30,869 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 09:42:31,693 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 09:42:31,694 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 09:42:32,768 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 09:42:32,768 INFO L316 CfgBuilder]: Removed 30 assume(true) statements. [2024-11-19 09:42:32,768 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:42:32 BoogieIcfgContainer [2024-11-19 09:42:32,768 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 09:42:32,770 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 09:42:32,770 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 09:42:32,774 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 09:42:32,774 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:42:29" (1/3) ... [2024-11-19 09:42:32,775 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bb340ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:42:32, skipping insertion in model container [2024-11-19 09:42:32,775 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:42:30" (2/3) ... [2024-11-19 09:42:32,777 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bb340ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:42:32, skipping insertion in model container [2024-11-19 09:42:32,777 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:42:32" (3/3) ... [2024-11-19 09:42:32,778 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_90-arrayloop2_racing.i [2024-11-19 09:42:32,792 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 09:42:32,792 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 59 error locations. [2024-11-19 09:42:32,793 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 09:42:32,926 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-19 09:42:32,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 207 transitions, 434 flow [2024-11-19 09:42:33,022 INFO L124 PetriNetUnfolderBase]: 55/343 cut-off events. [2024-11-19 09:42:33,022 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-19 09:42:33,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 360 conditions, 343 events. 55/343 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1937 event pairs, 0 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 189. Up to 8 conditions per place. [2024-11-19 09:42:33,030 INFO L82 GeneralOperation]: Start removeDead. Operand has 176 places, 207 transitions, 434 flow [2024-11-19 09:42:33,035 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 176 places, 207 transitions, 434 flow [2024-11-19 09:42:33,045 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:42:33,057 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;@7b603711, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:42:33,057 INFO L334 AbstractCegarLoop]: Starting to check reachability of 91 error locations. [2024-11-19 09:42:33,062 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:42:33,063 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-19 09:42:33,063 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:42:33,063 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:42:33,063 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 09:42:33,064 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-19 09:42:33,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:42:33,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1027252, now seen corresponding path program 1 times [2024-11-19 09:42:33,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 09:42:33,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [778636743] [2024-11-19 09:42:33,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:42:33,083 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 [2024-11-19 09:42:33,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 09:42:33,086 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) [2024-11-19 09:42:33,087 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 [2024-11-19 09:42:33,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:42:33,229 INFO L255 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 09:42:33,237 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:42:33,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:42:33,290 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:42:33,291 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-19 09:42:33,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [778636743] [2024-11-19 09:42:33,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [778636743] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:42:33,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:42:33,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:42:33,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209274725] [2024-11-19 09:42:33,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:42:33,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:42:33,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-19 09:42:33,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:42:33,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:42:33,574 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 207 [2024-11-19 09:42:33,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 207 transitions, 434 flow. Second operand has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 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) [2024-11-19 09:42:33,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:42:33,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 207 [2024-11-19 09:42:33,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:42:35,754 INFO L124 PetriNetUnfolderBase]: 7529/17015 cut-off events. [2024-11-19 09:42:35,755 INFO L125 PetriNetUnfolderBase]: For 326/354 co-relation queries the response was YES. [2024-11-19 09:42:35,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28438 conditions, 17015 events. 7529/17015 cut-off events. For 326/354 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 163795 event pairs, 4501 based on Foata normal form. 2880/17304 useless extension candidates. Maximal degree in co-relation 27148. Up to 7851 conditions per place. [2024-11-19 09:42:35,852 INFO L140 encePairwiseOnDemand]: 175/207 looper letters, 119 selfloop transitions, 4 changer transitions 0/225 dead transitions. [2024-11-19 09:42:35,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 225 transitions, 716 flow [2024-11-19 09:42:35,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:42:35,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:42:35,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 583 transitions. [2024-11-19 09:42:35,866 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7041062801932367 [2024-11-19 09:42:35,869 INFO L175 Difference]: Start difference. First operand has 176 places, 207 transitions, 434 flow. Second operand 4 states and 583 transitions. [2024-11-19 09:42:35,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 225 transitions, 716 flow [2024-11-19 09:42:35,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 225 transitions, 716 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 09:42:35,880 INFO L231 Difference]: Finished difference. Result has 176 places, 179 transitions, 394 flow [2024-11-19 09:42:35,882 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=394, PETRI_PLACES=176, PETRI_TRANSITIONS=179} [2024-11-19 09:42:35,884 INFO L277 CegarLoopForPetriNet]: 176 programPoint places, 0 predicate places. [2024-11-19 09:42:35,886 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 179 transitions, 394 flow [2024-11-19 09:42:35,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 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) [2024-11-19 09:42:35,887 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:42:35,887 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 09:42:35,895 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 [2024-11-19 09:42:36,089 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 [2024-11-19 09:42:36,090 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-19 09:42:36,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:42:36,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1027253, now seen corresponding path program 1 times [2024-11-19 09:42:36,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 09:42:36,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2111105899] [2024-11-19 09:42:36,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:42:36,095 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 [2024-11-19 09:42:36,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 09:42:36,097 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) [2024-11-19 09:42:36,101 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 [2024-11-19 09:42:36,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:42:36,223 INFO L255 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 09:42:36,224 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:42:36,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:42:36,264 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:42:36,264 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-19 09:42:36,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2111105899] [2024-11-19 09:42:36,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2111105899] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:42:36,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:42:36,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:42:36,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788292661] [2024-11-19 09:42:36,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:42:36,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:42:36,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-19 09:42:36,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:42:36,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:42:36,563 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 207 [2024-11-19 09:42:36,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 179 transitions, 394 flow. Second operand has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 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) [2024-11-19 09:42:36,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:42:36,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 207 [2024-11-19 09:42:36,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:42:38,726 INFO L124 PetriNetUnfolderBase]: 7464/17904 cut-off events. [2024-11-19 09:42:38,727 INFO L125 PetriNetUnfolderBase]: For 746/774 co-relation queries the response was YES. [2024-11-19 09:42:38,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30186 conditions, 17904 events. 7464/17904 cut-off events. For 746/774 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 178074 event pairs, 6385 based on Foata normal form. 3/15193 useless extension candidates. Maximal degree in co-relation 28806. Up to 11048 conditions per place. [2024-11-19 09:42:38,818 INFO L140 encePairwiseOnDemand]: 199/207 looper letters, 76 selfloop transitions, 5 changer transitions 0/183 dead transitions. [2024-11-19 09:42:38,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 183 transitions, 570 flow [2024-11-19 09:42:38,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:42:38,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:42:38,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 500 transitions. [2024-11-19 09:42:38,820 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6038647342995169 [2024-11-19 09:42:38,821 INFO L175 Difference]: Start difference. First operand has 176 places, 179 transitions, 394 flow. Second operand 4 states and 500 transitions. [2024-11-19 09:42:38,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 183 transitions, 570 flow [2024-11-19 09:42:38,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 183 transitions, 558 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 09:42:38,838 INFO L231 Difference]: Finished difference. Result has 178 places, 183 transitions, 427 flow [2024-11-19 09:42:38,839 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=427, PETRI_PLACES=178, PETRI_TRANSITIONS=183} [2024-11-19 09:42:38,839 INFO L277 CegarLoopForPetriNet]: 176 programPoint places, 2 predicate places. [2024-11-19 09:42:38,839 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 183 transitions, 427 flow [2024-11-19 09:42:38,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 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) [2024-11-19 09:42:38,840 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:42:38,840 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 09:42:38,848 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 [2024-11-19 09:42:39,040 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 [2024-11-19 09:42:39,041 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-19 09:42:39,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:42:39,041 INFO L85 PathProgramCache]: Analyzing trace with hash 539097242, now seen corresponding path program 1 times [2024-11-19 09:42:39,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 09:42:39,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1430377740] [2024-11-19 09:42:39,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:42:39,042 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 [2024-11-19 09:42:39,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 09:42:39,048 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) [2024-11-19 09:42:39,049 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 [2024-11-19 09:42:39,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:42:39,280 INFO L255 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 09:42:39,281 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:42:39,343 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 [2024-11-19 09:42:39,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:42:39,353 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:42:39,353 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-19 09:42:39,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1430377740] [2024-11-19 09:42:39,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1430377740] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:42:39,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:42:39,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:42:39,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572503965] [2024-11-19 09:42:39,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:42:39,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:42:39,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-19 09:42:39,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:42:39,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:42:39,525 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 207 [2024-11-19 09:42:39,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 183 transitions, 427 flow. Second operand has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 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) [2024-11-19 09:42:39,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:42:39,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 207 [2024-11-19 09:42:39,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:42:41,343 INFO L124 PetriNetUnfolderBase]: 7464/17903 cut-off events. [2024-11-19 09:42:41,343 INFO L125 PetriNetUnfolderBase]: For 309/337 co-relation queries the response was YES. [2024-11-19 09:42:41,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29665 conditions, 17903 events. 7464/17903 cut-off events. For 309/337 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 178145 event pairs, 6385 based on Foata normal form. 0/15188 useless extension candidates. Maximal degree in co-relation 29631. Up to 11044 conditions per place. [2024-11-19 09:42:41,447 INFO L140 encePairwiseOnDemand]: 204/207 looper letters, 74 selfloop transitions, 3 changer transitions 0/182 dead transitions. [2024-11-19 09:42:41,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 182 transitions, 579 flow [2024-11-19 09:42:41,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:42:41,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:42:41,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 395 transitions. [2024-11-19 09:42:41,450 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6360708534621579 [2024-11-19 09:42:41,450 INFO L175 Difference]: Start difference. First operand has 178 places, 183 transitions, 427 flow. Second operand 3 states and 395 transitions. [2024-11-19 09:42:41,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 182 transitions, 579 flow [2024-11-19 09:42:41,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 182 transitions, 576 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:42:41,457 INFO L231 Difference]: Finished difference. Result has 178 places, 182 transitions, 428 flow [2024-11-19 09:42:41,457 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=428, PETRI_PLACES=178, PETRI_TRANSITIONS=182} [2024-11-19 09:42:41,458 INFO L277 CegarLoopForPetriNet]: 176 programPoint places, 2 predicate places. [2024-11-19 09:42:41,458 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 182 transitions, 428 flow [2024-11-19 09:42:41,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 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) [2024-11-19 09:42:41,461 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:42:41,461 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 09:42:41,467 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-11-19 09:42:41,662 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 [2024-11-19 09:42:41,663 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-19 09:42:41,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:42:41,664 INFO L85 PathProgramCache]: Analyzing trace with hash 539097243, now seen corresponding path program 1 times [2024-11-19 09:42:41,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 09:42:41,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1508480902] [2024-11-19 09:42:41,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:42:41,668 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 [2024-11-19 09:42:41,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 09:42:41,671 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) [2024-11-19 09:42:41,672 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 [2024-11-19 09:42:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:42:41,823 INFO L255 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 09:42:41,824 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:42:41,832 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 5 [2024-11-19 09:42:41,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:42:41,841 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:42:41,841 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-19 09:42:41,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1508480902] [2024-11-19 09:42:41,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1508480902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:42:41,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:42:41,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:42:41,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360589218] [2024-11-19 09:42:41,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:42:41,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:42:41,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-19 09:42:41,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:42:41,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:42:41,996 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 207 [2024-11-19 09:42:41,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 182 transitions, 428 flow. Second operand has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 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) [2024-11-19 09:42:41,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:42:41,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 207 [2024-11-19 09:42:41,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:42:43,431 INFO L124 PetriNetUnfolderBase]: 7464/17902 cut-off events. [2024-11-19 09:42:43,432 INFO L125 PetriNetUnfolderBase]: For 311/339 co-relation queries the response was YES. [2024-11-19 09:42:43,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29665 conditions, 17902 events. 7464/17902 cut-off events. For 311/339 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 178085 event pairs, 6385 based on Foata normal form. 0/15189 useless extension candidates. Maximal degree in co-relation 29630. Up to 11044 conditions per place. [2024-11-19 09:42:43,523 INFO L140 encePairwiseOnDemand]: 204/207 looper letters, 74 selfloop transitions, 3 changer transitions 0/181 dead transitions. [2024-11-19 09:42:43,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 181 transitions, 580 flow [2024-11-19 09:42:43,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:42:43,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:42:43,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 395 transitions. [2024-11-19 09:42:43,525 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6360708534621579 [2024-11-19 09:42:43,525 INFO L175 Difference]: Start difference. First operand has 178 places, 182 transitions, 428 flow. Second operand 3 states and 395 transitions. [2024-11-19 09:42:43,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 181 transitions, 580 flow [2024-11-19 09:42:43,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 181 transitions, 574 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:42:43,528 INFO L231 Difference]: Finished difference. Result has 177 places, 181 transitions, 426 flow [2024-11-19 09:42:43,529 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=426, PETRI_PLACES=177, PETRI_TRANSITIONS=181} [2024-11-19 09:42:43,529 INFO L277 CegarLoopForPetriNet]: 176 programPoint places, 1 predicate places. [2024-11-19 09:42:43,529 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 181 transitions, 426 flow [2024-11-19 09:42:43,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 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) [2024-11-19 09:42:43,530 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:42:43,530 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-19 09:42:43,541 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 [2024-11-19 09:42:43,730 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 [2024-11-19 09:42:43,731 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-19 09:42:43,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:42:43,731 INFO L85 PathProgramCache]: Analyzing trace with hash -467851390, now seen corresponding path program 1 times [2024-11-19 09:42:43,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 09:42:43,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1416582124] [2024-11-19 09:42:43,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:42:43,732 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 [2024-11-19 09:42:43,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 09:42:43,733 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) [2024-11-19 09:42:43,735 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 [2024-11-19 09:42:43,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:42:43,843 INFO L255 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 09:42:43,845 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:42:43,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:42:43,852 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:42:43,852 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-19 09:42:43,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1416582124] [2024-11-19 09:42:43,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1416582124] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:42:43,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:42:43,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:42:43,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703762276] [2024-11-19 09:42:43,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:42:43,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:42:43,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-19 09:42:43,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:42:43,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:42:43,853 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 207 [2024-11-19 09:42:43,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 181 transitions, 426 flow. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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) [2024-11-19 09:42:43,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:42:43,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 207 [2024-11-19 09:42:43,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:42:45,565 INFO L124 PetriNetUnfolderBase]: 7463/17924 cut-off events. [2024-11-19 09:42:45,566 INFO L125 PetriNetUnfolderBase]: For 313/341 co-relation queries the response was YES. [2024-11-19 09:42:45,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29693 conditions, 17924 events. 7463/17924 cut-off events. For 313/341 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 178142 event pairs, 6385 based on Foata normal form. 2/15202 useless extension candidates. Maximal degree in co-relation 29661. Up to 11044 conditions per place. [2024-11-19 09:42:45,755 INFO L140 encePairwiseOnDemand]: 204/207 looper letters, 78 selfloop transitions, 3 changer transitions 0/185 dead transitions. [2024-11-19 09:42:45,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 185 transitions, 600 flow [2024-11-19 09:42:45,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:42:45,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:42:45,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 403 transitions. [2024-11-19 09:42:45,761 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6489533011272142 [2024-11-19 09:42:45,761 INFO L175 Difference]: Start difference. First operand has 177 places, 181 transitions, 426 flow. Second operand 3 states and 403 transitions. [2024-11-19 09:42:45,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 185 transitions, 600 flow [2024-11-19 09:42:45,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 185 transitions, 590 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:42:45,767 INFO L231 Difference]: Finished difference. Result has 178 places, 181 transitions, 431 flow [2024-11-19 09:42:45,768 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=431, PETRI_PLACES=178, PETRI_TRANSITIONS=181} [2024-11-19 09:42:45,769 INFO L277 CegarLoopForPetriNet]: 176 programPoint places, 2 predicate places. [2024-11-19 09:42:45,770 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 181 transitions, 431 flow [2024-11-19 09:42:45,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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) [2024-11-19 09:42:45,771 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:42:45,771 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:42:45,776 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-11-19 09:42:45,971 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 [2024-11-19 09:42:45,972 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-19 09:42:45,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:42:45,973 INFO L85 PathProgramCache]: Analyzing trace with hash -467853622, now seen corresponding path program 1 times [2024-11-19 09:42:45,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 09:42:45,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1358523605] [2024-11-19 09:42:45,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:42:45,974 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 [2024-11-19 09:42:45,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 09:42:45,978 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) [2024-11-19 09:42:45,979 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 [2024-11-19 09:42:46,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:42:46,120 INFO L255 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 09:42:46,123 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:42:46,132 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 5 [2024-11-19 09:42:46,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:42:46,153 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:42:46,154 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-19 09:42:46,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1358523605] [2024-11-19 09:42:46,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1358523605] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:42:46,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:42:46,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:42:46,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622465126] [2024-11-19 09:42:46,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:42:46,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:42:46,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-19 09:42:46,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:42:46,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:42:46,385 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 207 [2024-11-19 09:42:46,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 181 transitions, 431 flow. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 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) [2024-11-19 09:42:46,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:42:46,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 207 [2024-11-19 09:42:46,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:42:48,147 INFO L124 PetriNetUnfolderBase]: 7463/17920 cut-off events. [2024-11-19 09:42:48,147 INFO L125 PetriNetUnfolderBase]: For 328/356 co-relation queries the response was YES. [2024-11-19 09:42:48,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29693 conditions, 17920 events. 7463/17920 cut-off events. For 328/356 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 178165 event pairs, 6385 based on Foata normal form. 2/15202 useless extension candidates. Maximal degree in co-relation 29657. Up to 11048 conditions per place. [2024-11-19 09:42:48,268 INFO L140 encePairwiseOnDemand]: 202/207 looper letters, 75 selfloop transitions, 4 changer transitions 0/179 dead transitions. [2024-11-19 09:42:48,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 179 transitions, 585 flow [2024-11-19 09:42:48,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:42:48,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:42:48,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 489 transitions. [2024-11-19 09:42:48,270 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5905797101449275 [2024-11-19 09:42:48,270 INFO L175 Difference]: Start difference. First operand has 178 places, 181 transitions, 431 flow. Second operand 4 states and 489 transitions. [2024-11-19 09:42:48,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 179 transitions, 585 flow [2024-11-19 09:42:48,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 179 transitions, 582 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:42:48,275 INFO L231 Difference]: Finished difference. Result has 178 places, 179 transitions, 432 flow [2024-11-19 09:42:48,276 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=432, PETRI_PLACES=178, PETRI_TRANSITIONS=179} [2024-11-19 09:42:48,279 INFO L277 CegarLoopForPetriNet]: 176 programPoint places, 2 predicate places. [2024-11-19 09:42:48,279 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 179 transitions, 432 flow [2024-11-19 09:42:48,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 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) [2024-11-19 09:42:48,280 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:42:48,280 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:42:48,286 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 [2024-11-19 09:42:48,480 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 [2024-11-19 09:42:48,481 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-19 09:42:48,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:42:48,481 INFO L85 PathProgramCache]: Analyzing trace with hash -467853623, now seen corresponding path program 1 times [2024-11-19 09:42:48,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 09:42:48,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1168820594] [2024-11-19 09:42:48,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:42:48,482 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 [2024-11-19 09:42:48,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 09:42:48,485 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) [2024-11-19 09:42:48,486 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 [2024-11-19 09:42:48,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:42:48,619 INFO L255 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 09:42:48,620 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:42:48,625 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 [2024-11-19 09:42:48,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:42:48,635 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:42:48,636 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-19 09:42:48,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1168820594] [2024-11-19 09:42:48,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1168820594] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:42:48,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:42:48,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:42:48,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849793225] [2024-11-19 09:42:48,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:42:48,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:42:48,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-19 09:42:48,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:42:48,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:42:48,839 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 207 [2024-11-19 09:42:48,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 179 transitions, 432 flow. Second operand has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 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) [2024-11-19 09:42:48,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:42:48,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 207 [2024-11-19 09:42:48,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:42:50,401 INFO L124 PetriNetUnfolderBase]: 7463/17916 cut-off events. [2024-11-19 09:42:50,401 INFO L125 PetriNetUnfolderBase]: For 313/341 co-relation queries the response was YES. [2024-11-19 09:42:50,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29697 conditions, 17916 events. 7463/17916 cut-off events. For 313/341 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 178058 event pairs, 6385 based on Foata normal form. 2/15200 useless extension candidates. Maximal degree in co-relation 29661. Up to 11046 conditions per place. [2024-11-19 09:42:50,572 INFO L140 encePairwiseOnDemand]: 200/207 looper letters, 72 selfloop transitions, 7 changer transitions 0/177 dead transitions. [2024-11-19 09:42:50,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 177 transitions, 586 flow [2024-11-19 09:42:50,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 09:42:50,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 09:42:50,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 582 transitions. [2024-11-19 09:42:50,575 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5623188405797102 [2024-11-19 09:42:50,575 INFO L175 Difference]: Start difference. First operand has 178 places, 179 transitions, 432 flow. Second operand 5 states and 582 transitions. [2024-11-19 09:42:50,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 177 transitions, 586 flow [2024-11-19 09:42:50,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 177 transitions, 578 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 09:42:50,581 INFO L231 Difference]: Finished difference. Result has 177 places, 177 transitions, 434 flow [2024-11-19 09:42:50,581 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=434, PETRI_PLACES=177, PETRI_TRANSITIONS=177} [2024-11-19 09:42:50,582 INFO L277 CegarLoopForPetriNet]: 176 programPoint places, 1 predicate places. [2024-11-19 09:42:50,583 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 177 transitions, 434 flow [2024-11-19 09:42:50,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 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) [2024-11-19 09:42:50,583 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:42:50,583 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:42:50,591 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 [2024-11-19 09:42:50,784 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 [2024-11-19 09:42:50,784 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-19 09:42:50,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:42:50,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1364269797, now seen corresponding path program 1 times [2024-11-19 09:42:50,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 09:42:50,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1044503818] [2024-11-19 09:42:50,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:42:50,786 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 [2024-11-19 09:42:50,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 09:42:50,787 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) [2024-11-19 09:42:50,788 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 [2024-11-19 09:42:51,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:42:51,499 INFO L255 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 09:42:51,501 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:42:51,606 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-19 09:42:51,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-11-19 09:42:51,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:42:51,689 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:42:51,689 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-19 09:42:51,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1044503818] [2024-11-19 09:42:51,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1044503818] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:42:51,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:42:51,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:42:51,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984955105] [2024-11-19 09:42:51,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:42:51,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:42:51,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-19 09:42:51,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:42:51,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:42:51,915 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 207 [2024-11-19 09:42:51,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 177 transitions, 434 flow. Second operand has 4 states, 4 states have (on average 105.75) internal successors, (423), 4 states have internal predecessors, (423), 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) [2024-11-19 09:42:51,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:42:51,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 207 [2024-11-19 09:42:51,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:42:53,314 INFO L124 PetriNetUnfolderBase]: 7529/17028 cut-off events. [2024-11-19 09:42:53,314 INFO L125 PetriNetUnfolderBase]: For 367/395 co-relation queries the response was YES. [2024-11-19 09:42:53,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29119 conditions, 17028 events. 7529/17028 cut-off events. For 367/395 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 163790 event pairs, 4501 based on Foata normal form. 2/14536 useless extension candidates. Maximal degree in co-relation 29081. Up to 7854 conditions per place. [2024-11-19 09:42:53,409 INFO L140 encePairwiseOnDemand]: 201/207 looper letters, 120 selfloop transitions, 5 changer transitions 0/221 dead transitions. [2024-11-19 09:42:53,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 221 transitions, 772 flow [2024-11-19 09:42:53,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:42:53,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:42:53,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 539 transitions. [2024-11-19 09:42:53,411 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6509661835748792 [2024-11-19 09:42:53,411 INFO L175 Difference]: Start difference. First operand has 177 places, 177 transitions, 434 flow. Second operand 4 states and 539 transitions. [2024-11-19 09:42:53,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 221 transitions, 772 flow [2024-11-19 09:42:53,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 221 transitions, 758 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 09:42:53,415 INFO L231 Difference]: Finished difference. Result has 174 places, 175 transitions, 426 flow [2024-11-19 09:42:53,415 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=426, PETRI_PLACES=174, PETRI_TRANSITIONS=175} [2024-11-19 09:42:53,415 INFO L277 CegarLoopForPetriNet]: 176 programPoint places, -2 predicate places. [2024-11-19 09:42:53,416 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 175 transitions, 426 flow [2024-11-19 09:42:53,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.75) internal successors, (423), 4 states have internal predecessors, (423), 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) [2024-11-19 09:42:53,416 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:42:53,416 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:42:53,424 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 [2024-11-19 09:42:53,620 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 [2024-11-19 09:42:53,620 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-19 09:42:53,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:42:53,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1364269798, now seen corresponding path program 1 times [2024-11-19 09:42:53,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 09:42:53,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1817509593] [2024-11-19 09:42:53,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:42:53,622 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 [2024-11-19 09:42:53,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 09:42:53,624 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) [2024-11-19 09:42:53,625 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 [2024-11-19 09:42:54,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:42:54,118 INFO L255 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 09:42:54,119 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:42:54,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 09:42:54,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-19 09:42:54,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:42:54,243 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:42:54,243 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-19 09:42:54,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1817509593] [2024-11-19 09:42:54,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1817509593] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:42:54,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:42:54,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:42:54,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382291408] [2024-11-19 09:42:54,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:42:54,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:42:54,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-19 09:42:54,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:42:54,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 09:42:54,571 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 207 [2024-11-19 09:42:54,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 175 transitions, 426 flow. Second operand has 5 states, 5 states have (on average 105.4) internal successors, (527), 5 states have internal predecessors, (527), 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) [2024-11-19 09:42:54,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:42:54,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 207 [2024-11-19 09:42:54,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:42:56,135 INFO L124 PetriNetUnfolderBase]: 7608/18232 cut-off events. [2024-11-19 09:42:56,135 INFO L125 PetriNetUnfolderBase]: For 845/873 co-relation queries the response was YES. [2024-11-19 09:42:56,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30869 conditions, 18232 events. 7608/18232 cut-off events. For 845/873 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 181928 event pairs, 6517 based on Foata normal form. 2/15488 useless extension candidates. Maximal degree in co-relation 30777. Up to 11287 conditions per place. [2024-11-19 09:42:56,235 INFO L140 encePairwiseOnDemand]: 201/207 looper letters, 83 selfloop transitions, 5 changer transitions 0/182 dead transitions. [2024-11-19 09:42:56,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 182 transitions, 632 flow [2024-11-19 09:42:56,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:42:56,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:42:56,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 503 transitions. [2024-11-19 09:42:56,237 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.607487922705314 [2024-11-19 09:42:56,237 INFO L175 Difference]: Start difference. First operand has 174 places, 175 transitions, 426 flow. Second operand 4 states and 503 transitions. [2024-11-19 09:42:56,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 182 transitions, 632 flow [2024-11-19 09:42:56,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 182 transitions, 616 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 09:42:56,248 INFO L231 Difference]: Finished difference. Result has 176 places, 179 transitions, 462 flow [2024-11-19 09:42:56,248 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=462, PETRI_PLACES=176, PETRI_TRANSITIONS=179} [2024-11-19 09:42:56,249 INFO L277 CegarLoopForPetriNet]: 176 programPoint places, 0 predicate places. [2024-11-19 09:42:56,249 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 179 transitions, 462 flow [2024-11-19 09:42:56,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 105.4) internal successors, (527), 5 states have internal predecessors, (527), 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) [2024-11-19 09:42:56,250 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:42:56,250 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:42:56,256 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 [2024-11-19 09:42:56,450 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 [2024-11-19 09:42:56,450 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-19 09:42:56,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:42:56,454 INFO L85 PathProgramCache]: Analyzing trace with hash -657308097, now seen corresponding path program 1 times [2024-11-19 09:42:56,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 09:42:56,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1640181072] [2024-11-19 09:42:56,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:42:56,454 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 [2024-11-19 09:42:56,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 09:42:56,459 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) [2024-11-19 09:42:56,460 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 [2024-11-19 09:42:57,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:42:57,083 INFO L255 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-19 09:42:57,085 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:42:57,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2024-11-19 09:42:57,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 15 [2024-11-19 09:42:57,238 INFO L349 Elim1Store]: treesize reduction 17, result has 19.0 percent of original size [2024-11-19 09:42:57,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 16 [2024-11-19 09:42:57,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-19 09:42:57,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-19 09:42:57,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-19 09:42:57,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:42:57,394 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:42:57,394 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-19 09:42:57,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1640181072] [2024-11-19 09:42:57,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1640181072] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:42:57,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:42:57,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 09:42:57,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268563187] [2024-11-19 09:42:57,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:42:57,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 09:42:57,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-19 09:42:57,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 09:42:57,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-19 09:42:58,593 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 207 [2024-11-19 09:42:58,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 179 transitions, 462 flow. Second operand has 10 states, 10 states have (on average 96.0) internal successors, (960), 10 states have internal predecessors, (960), 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) [2024-11-19 09:42:58,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:42:58,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 207 [2024-11-19 09:42:58,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:43:00,332 INFO L124 PetriNetUnfolderBase]: 7530/17056 cut-off events. [2024-11-19 09:43:00,332 INFO L125 PetriNetUnfolderBase]: For 366/394 co-relation queries the response was YES. [2024-11-19 09:43:00,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29193 conditions, 17056 events. 7530/17056 cut-off events. For 366/394 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 164139 event pairs, 4501 based on Foata normal form. 0/14564 useless extension candidates. Maximal degree in co-relation 29100. Up to 7866 conditions per place. [2024-11-19 09:43:00,437 INFO L140 encePairwiseOnDemand]: 195/207 looper letters, 128 selfloop transitions, 16 changer transitions 0/234 dead transitions. [2024-11-19 09:43:00,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 234 transitions, 868 flow [2024-11-19 09:43:00,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 09:43:00,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 09:43:00,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1182 transitions. [2024-11-19 09:43:00,442 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5191040843214756 [2024-11-19 09:43:00,442 INFO L175 Difference]: Start difference. First operand has 176 places, 179 transitions, 462 flow. Second operand 11 states and 1182 transitions. [2024-11-19 09:43:00,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 234 transitions, 868 flow [2024-11-19 09:43:00,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 234 transitions, 866 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:43:00,447 INFO L231 Difference]: Finished difference. Result has 190 places, 185 transitions, 541 flow [2024-11-19 09:43:00,447 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=541, PETRI_PLACES=190, PETRI_TRANSITIONS=185} [2024-11-19 09:43:00,447 INFO L277 CegarLoopForPetriNet]: 176 programPoint places, 14 predicate places. [2024-11-19 09:43:00,447 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 185 transitions, 541 flow [2024-11-19 09:43:00,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 96.0) internal successors, (960), 10 states have internal predecessors, (960), 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) [2024-11-19 09:43:00,448 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:43:00,448 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:43:00,454 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 [2024-11-19 09:43:00,649 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 [2024-11-19 09:43:00,649 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-19 09:43:00,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:43:00,649 INFO L85 PathProgramCache]: Analyzing trace with hash -657308096, now seen corresponding path program 1 times [2024-11-19 09:43:00,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 09:43:00,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1573391723] [2024-11-19 09:43:00,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:43:00,650 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 [2024-11-19 09:43:00,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 09:43:00,651 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) [2024-11-19 09:43:00,652 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 [2024-11-19 09:43:01,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:43:01,259 INFO L255 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-19 09:43:01,263 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:43:01,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2024-11-19 09:43:01,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2024-11-19 09:43:01,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-19 09:43:01,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-19 09:43:01,496 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-19 09:43:01,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-19 09:43:01,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-19 09:43:01,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-19 09:43:01,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2024-11-19 09:43:01,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-19 09:43:01,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2024-11-19 09:43:01,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-19 09:43:01,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2024-11-19 09:43:01,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:43:01,720 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:43:01,720 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-19 09:43:01,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1573391723] [2024-11-19 09:43:01,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1573391723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:43:01,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:43:01,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 09:43:01,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939681449] [2024-11-19 09:43:01,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:43:01,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 09:43:01,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-19 09:43:01,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 09:43:01,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-19 09:43:03,245 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 207 [2024-11-19 09:43:03,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 185 transitions, 541 flow. Second operand has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 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) [2024-11-19 09:43:03,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:43:03,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 207 [2024-11-19 09:43:03,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:43:05,420 INFO L124 PetriNetUnfolderBase]: 7608/18229 cut-off events. [2024-11-19 09:43:05,420 INFO L125 PetriNetUnfolderBase]: For 859/887 co-relation queries the response was YES. [2024-11-19 09:43:05,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30947 conditions, 18229 events. 7608/18229 cut-off events. For 859/887 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 181790 event pairs, 6517 based on Foata normal form. 1/15503 useless extension candidates. Maximal degree in co-relation 30809. Up to 11300 conditions per place. [2024-11-19 09:43:05,500 INFO L140 encePairwiseOnDemand]: 195/207 looper letters, 103 selfloop transitions, 11 changer transitions 0/200 dead transitions. [2024-11-19 09:43:05,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 200 transitions, 822 flow [2024-11-19 09:43:05,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 09:43:05,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 09:43:05,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1088 transitions. [2024-11-19 09:43:05,503 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47782169521299955 [2024-11-19 09:43:05,503 INFO L175 Difference]: Start difference. First operand has 190 places, 185 transitions, 541 flow. Second operand 11 states and 1088 transitions. [2024-11-19 09:43:05,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 200 transitions, 822 flow [2024-11-19 09:43:05,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 200 transitions, 802 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-19 09:43:05,513 INFO L231 Difference]: Finished difference. Result has 199 places, 189 transitions, 582 flow [2024-11-19 09:43:05,513 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=582, PETRI_PLACES=199, PETRI_TRANSITIONS=189} [2024-11-19 09:43:05,513 INFO L277 CegarLoopForPetriNet]: 176 programPoint places, 23 predicate places. [2024-11-19 09:43:05,514 INFO L471 AbstractCegarLoop]: Abstraction has has 199 places, 189 transitions, 582 flow [2024-11-19 09:43:05,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 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) [2024-11-19 09:43:05,514 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:43:05,514 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:43:05,523 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 [2024-11-19 09:43:05,718 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 [2024-11-19 09:43:05,718 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-19 09:43:05,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:43:05,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1098286510, now seen corresponding path program 1 times [2024-11-19 09:43:05,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 09:43:05,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1313838750] [2024-11-19 09:43:05,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:43:05,719 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 [2024-11-19 09:43:05,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 09:43:05,720 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) [2024-11-19 09:43:05,722 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 [2024-11-19 09:43:05,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:43:05,880 INFO L255 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 09:43:05,881 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:43:05,887 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 [2024-11-19 09:43:05,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:43:05,904 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:43:05,904 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-19 09:43:05,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1313838750] [2024-11-19 09:43:05,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1313838750] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:43:05,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:43:05,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:43:05,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411600277] [2024-11-19 09:43:05,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:43:05,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:43:05,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-19 09:43:05,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:43:05,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:43:06,020 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 207 [2024-11-19 09:43:06,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 189 transitions, 582 flow. Second operand has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 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) [2024-11-19 09:43:06,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:43:06,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 207 [2024-11-19 09:43:06,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:43:07,353 INFO L124 PetriNetUnfolderBase]: 7464/17931 cut-off events. [2024-11-19 09:43:07,353 INFO L125 PetriNetUnfolderBase]: For 381/409 co-relation queries the response was YES. [2024-11-19 09:43:07,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29808 conditions, 17931 events. 7464/17931 cut-off events. For 381/409 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 178410 event pairs, 6385 based on Foata normal form. 0/15227 useless extension candidates. Maximal degree in co-relation 29686. Up to 11045 conditions per place. [2024-11-19 09:43:07,484 INFO L140 encePairwiseOnDemand]: 202/207 looper letters, 79 selfloop transitions, 11 changer transitions 0/187 dead transitions. [2024-11-19 09:43:07,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 187 transitions, 758 flow [2024-11-19 09:43:07,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:43:07,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:43:07,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 489 transitions. [2024-11-19 09:43:07,486 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5905797101449275 [2024-11-19 09:43:07,486 INFO L175 Difference]: Start difference. First operand has 199 places, 189 transitions, 582 flow. Second operand 4 states and 489 transitions. [2024-11-19 09:43:07,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 187 transitions, 758 flow [2024-11-19 09:43:07,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 187 transitions, 754 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:43:07,496 INFO L231 Difference]: Finished difference. Result has 198 places, 187 transitions, 596 flow [2024-11-19 09:43:07,497 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=596, PETRI_PLACES=198, PETRI_TRANSITIONS=187} [2024-11-19 09:43:07,498 INFO L277 CegarLoopForPetriNet]: 176 programPoint places, 22 predicate places. [2024-11-19 09:43:07,498 INFO L471 AbstractCegarLoop]: Abstraction has has 198 places, 187 transitions, 596 flow [2024-11-19 09:43:07,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 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) [2024-11-19 09:43:07,500 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:43:07,500 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:43:07,506 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2024-11-19 09:43:07,700 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 [2024-11-19 09:43:07,700 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-19 09:43:07,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:43:07,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1098286511, now seen corresponding path program 1 times [2024-11-19 09:43:07,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 09:43:07,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2073076772] [2024-11-19 09:43:07,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:43:07,702 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 [2024-11-19 09:43:07,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 09:43:07,705 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) [2024-11-19 09:43:07,706 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 [2024-11-19 09:43:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:43:07,916 INFO L255 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 09:43:07,918 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:43:07,922 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 5 [2024-11-19 09:43:07,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:43:07,963 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:43:07,963 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-19 09:43:07,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2073076772] [2024-11-19 09:43:07,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2073076772] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:43:07,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:43:07,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:43:07,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111004386] [2024-11-19 09:43:07,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:43:07,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:43:07,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-19 09:43:07,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:43:07,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:43:08,169 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 207 [2024-11-19 09:43:08,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 187 transitions, 596 flow. Second operand has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:43:08,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:43:08,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 207 [2024-11-19 09:43:08,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:43:09,365 INFO L124 PetriNetUnfolderBase]: 7464/17923 cut-off events. [2024-11-19 09:43:09,365 INFO L125 PetriNetUnfolderBase]: For 424/452 co-relation queries the response was YES. [2024-11-19 09:43:09,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29802 conditions, 17923 events. 7464/17923 cut-off events. For 424/452 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 178400 event pairs, 6385 based on Foata normal form. 8/15227 useless extension candidates. Maximal degree in co-relation 29682. Up to 11045 conditions per place. [2024-11-19 09:43:09,468 INFO L140 encePairwiseOnDemand]: 202/207 looper letters, 77 selfloop transitions, 11 changer transitions 0/185 dead transitions. [2024-11-19 09:43:09,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 185 transitions, 768 flow [2024-11-19 09:43:09,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:43:09,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:43:09,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 495 transitions. [2024-11-19 09:43:09,470 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5978260869565217 [2024-11-19 09:43:09,470 INFO L175 Difference]: Start difference. First operand has 198 places, 187 transitions, 596 flow. Second operand 4 states and 495 transitions. [2024-11-19 09:43:09,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 185 transitions, 768 flow [2024-11-19 09:43:09,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 185 transitions, 746 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 09:43:09,474 INFO L231 Difference]: Finished difference. Result has 196 places, 185 transitions, 592 flow [2024-11-19 09:43:09,474 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=592, PETRI_PLACES=196, PETRI_TRANSITIONS=185} [2024-11-19 09:43:09,474 INFO L277 CegarLoopForPetriNet]: 176 programPoint places, 20 predicate places. [2024-11-19 09:43:09,475 INFO L471 AbstractCegarLoop]: Abstraction has has 196 places, 185 transitions, 592 flow [2024-11-19 09:43:09,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:43:09,475 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:43:09,475 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:43:09,482 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 [2024-11-19 09:43:09,679 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 [2024-11-19 09:43:09,679 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-19 09:43:09,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:43:09,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1831615336, now seen corresponding path program 1 times [2024-11-19 09:43:09,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 09:43:09,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2000595012] [2024-11-19 09:43:09,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:43:09,680 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 [2024-11-19 09:43:09,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 09:43:09,683 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) [2024-11-19 09:43:09,683 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 [2024-11-19 09:43:09,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:43:09,868 INFO L255 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 09:43:09,869 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:43:09,885 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:43:09,885 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:43:09,908 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:43:09,908 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-19 09:43:09,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2000595012] [2024-11-19 09:43:09,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2000595012] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:43:09,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 09:43:09,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-11-19 09:43:09,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806002264] [2024-11-19 09:43:09,909 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 09:43:09,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 09:43:09,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-19 09:43:09,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 09:43:09,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-19 09:43:09,910 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 207 [2024-11-19 09:43:09,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 185 transitions, 592 flow. Second operand has 6 states, 6 states have (on average 110.83333333333333) internal successors, (665), 6 states have internal predecessors, (665), 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) [2024-11-19 09:43:09,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:43:09,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 207 [2024-11-19 09:43:09,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:43:11,458 INFO L124 PetriNetUnfolderBase]: 7464/17973 cut-off events. [2024-11-19 09:43:11,458 INFO L125 PetriNetUnfolderBase]: For 500/528 co-relation queries the response was YES. [2024-11-19 09:43:11,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29944 conditions, 17973 events. 7464/17973 cut-off events. For 500/528 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 178752 event pairs, 6385 based on Foata normal form. 6/15271 useless extension candidates. Maximal degree in co-relation 29751. Up to 11041 conditions per place. [2024-11-19 09:43:11,601 INFO L140 encePairwiseOnDemand]: 203/207 looper letters, 92 selfloop transitions, 11 changer transitions 0/200 dead transitions. [2024-11-19 09:43:11,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 200 transitions, 910 flow [2024-11-19 09:43:11,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 09:43:11,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 09:43:11,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 740 transitions. [2024-11-19 09:43:11,603 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5958132045088567 [2024-11-19 09:43:11,603 INFO L175 Difference]: Start difference. First operand has 196 places, 185 transitions, 592 flow. Second operand 6 states and 740 transitions. [2024-11-19 09:43:11,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 200 transitions, 910 flow [2024-11-19 09:43:11,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 200 transitions, 866 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 09:43:11,607 INFO L231 Difference]: Finished difference. Result has 202 places, 190 transitions, 658 flow [2024-11-19 09:43:11,607 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=658, PETRI_PLACES=202, PETRI_TRANSITIONS=190} [2024-11-19 09:43:11,608 INFO L277 CegarLoopForPetriNet]: 176 programPoint places, 26 predicate places. [2024-11-19 09:43:11,608 INFO L471 AbstractCegarLoop]: Abstraction has has 202 places, 190 transitions, 658 flow [2024-11-19 09:43:11,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 110.83333333333333) internal successors, (665), 6 states have internal predecessors, (665), 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) [2024-11-19 09:43:11,608 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:43:11,608 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:43:11,619 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 [2024-11-19 09:43:11,809 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 [2024-11-19 09:43:11,809 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-19 09:43:11,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:43:11,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1841596778, now seen corresponding path program 1 times [2024-11-19 09:43:11,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 09:43:11,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1860926472] [2024-11-19 09:43:11,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:43:11,810 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 [2024-11-19 09:43:11,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 09:43:11,812 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) [2024-11-19 09:43:11,813 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 [2024-11-19 09:43:12,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:43:12,572 INFO L255 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-19 09:43:12,577 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:43:12,581 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 5 [2024-11-19 09:43:12,585 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 [2024-11-19 09:43:12,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 1 [2024-11-19 09:43:12,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 11 [2024-11-19 09:43:12,753 INFO L349 Elim1Store]: treesize reduction 29, result has 46.3 percent of original size [2024-11-19 09:43:12,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 29 [2024-11-19 09:43:12,783 INFO L349 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2024-11-19 09:43:12,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 30 [2024-11-19 09:43:12,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-19 09:43:12,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 27 [2024-11-19 09:43:12,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-19 09:43:12,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 27 [2024-11-19 09:43:12,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 19 [2024-11-19 09:43:12,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-19 09:43:12,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 17 treesize of output 9 [2024-11-19 09:43:12,934 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:43:12,935 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:43:13,027 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))) (and (forall ((v_ArrVal_581 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_582 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_581) |c_~#c~0.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_582) |c_~#c~0.base|) .cse0)))) (forall ((v_ArrVal_581 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_581) |c_~#c~0.base|) .cse0))) (bvule (bvadd (_ bv4 32) .cse1) (bvadd (_ bv8 32) .cse1)))))) is different from false [2024-11-19 09:43:13,071 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))) (and (forall ((v_ArrVal_581 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_581) |c_~#c~0.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_581 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_582 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_581) |c_~#c~0.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_582) |c_~#c~0.base|) .cse1)))))) is different from false [2024-11-19 09:43:13,188 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))) (and (forall ((|v_ULTIMATE.start_new_~p~0#1.base_45| (_ BitVec 32))) (or (forall ((v_ArrVal_581 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_582 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_576 (_ BitVec 32))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#2.offset| |v_ULTIMATE.start_new_~p~0#1.base_45| v_ArrVal_581) |c_~#c~0.base|) .cse0)) (select (store |c_#length| |v_ULTIMATE.start_new_~p~0#1.base_45| v_ArrVal_576) (select (select (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_new_~p~0#1.base_45| v_ArrVal_582) |c_~#c~0.base|) .cse0)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_new_~p~0#1.base_45|))))) (forall ((|v_ULTIMATE.start_new_~p~0#1.base_45| (_ BitVec 32))) (or (forall ((v_ArrVal_581 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#2.offset| |v_ULTIMATE.start_new_~p~0#1.base_45| v_ArrVal_581) |c_~#c~0.base|) .cse0))) (bvule (bvadd (_ bv4 32) .cse1) (bvadd (_ bv8 32) .cse1)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_new_~p~0#1.base_45|))))))) is different from false [2024-11-19 09:43:13,234 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 09:43:13,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 49 [2024-11-19 09:43:13,263 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 09:43:13,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 41 [2024-11-19 09:43:13,324 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 09:43:13,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 77 [2024-11-19 09:43:13,397 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 09:43:13,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 113 [2024-11-19 09:43:13,421 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 26 treesize of output 20 [2024-11-19 09:43:13,443 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 20 treesize of output 14 [2024-11-19 09:43:14,191 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 09:43:14,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 38 [2024-11-19 09:43:14,205 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 09:43:14,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 55 [2024-11-19 09:43:14,212 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 23 treesize of output 11 [2024-11-19 09:43:16,096 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2024-11-19 09:43:16,096 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-19 09:43:16,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1860926472] [2024-11-19 09:43:16,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1860926472] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:43:16,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 09:43:16,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2024-11-19 09:43:16,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557870326] [2024-11-19 09:43:16,097 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 09:43:16,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 09:43:16,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-19 09:43:16,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 09:43:16,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=132, Unknown=3, NotChecked=72, Total=240 [2024-11-19 09:43:16,396 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 207 [2024-11-19 09:43:16,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 190 transitions, 658 flow. Second operand has 16 states, 16 states have (on average 42.125) internal successors, (674), 16 states have internal predecessors, (674), 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) [2024-11-19 09:43:16,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:43:16,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 207 [2024-11-19 09:43:16,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand