./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing-deref.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_92-evilcollapse_racing-deref.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 dda5467f7679a243042daf02aae11f74f39b907c2525dfc042cb8ad8b69dcfc9 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 09:42:32,479 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 09:42:32,532 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-19 09:42:32,537 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 09:42:32,537 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 09:42:32,567 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 09:42:32,568 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 09:42:32,568 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 09:42:32,569 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 09:42:32,569 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 09:42:32,569 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 09:42:32,570 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 09:42:32,570 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 09:42:32,570 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 09:42:32,571 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 09:42:32,571 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 09:42:32,572 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 09:42:32,572 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 09:42:32,572 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 09:42:32,573 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 09:42:32,573 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 09:42:32,574 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 09:42:32,574 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 09:42:32,574 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 09:42:32,574 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 09:42:32,575 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 09:42:32,575 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 09:42:32,575 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 09:42:32,576 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 09:42:32,576 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 09:42:32,576 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 09:42:32,577 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 09:42:32,577 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 09:42:32,577 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:42:32,577 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 09:42:32,578 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 09:42:32,578 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 09:42:32,578 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 09:42:32,579 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 09:42:32,579 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 09:42:32,579 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 09:42:32,580 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 09:42:32,580 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dda5467f7679a243042daf02aae11f74f39b907c2525dfc042cb8ad8b69dcfc9 [2024-11-19 09:42:32,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 09:42:32,885 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 09:42:32,888 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 09:42:32,889 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 09:42:32,889 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 09:42:32,891 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing-deref.i [2024-11-19 09:42:34,305 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 09:42:34,617 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 09:42:34,618 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing-deref.i [2024-11-19 09:42:34,639 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b15c62c5f/6c4e9b6ee42d4bedac55cdeca8309338/FLAG7af4a475c [2024-11-19 09:42:34,655 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b15c62c5f/6c4e9b6ee42d4bedac55cdeca8309338 [2024-11-19 09:42:34,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 09:42:34,659 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 09:42:34,660 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 09:42:34,660 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 09:42:34,665 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 09:42:34,665 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:42:34" (1/1) ... [2024-11-19 09:42:34,666 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51e3d9d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:42:34, skipping insertion in model container [2024-11-19 09:42:34,668 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:42:34" (1/1) ... [2024-11-19 09:42:34,722 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 09:42:35,129 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-19 09:42:35,130 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-19 09:42:35,131 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-19 09:42:35,132 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-19 09:42:35,157 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:42:35,199 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 09:42:35,199 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7d65f929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:42:35, skipping insertion in model container [2024-11-19 09:42:35,200 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 09:42:35,200 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-19 09:42:35,202 INFO L158 Benchmark]: Toolchain (without parser) took 542.39ms. Allocated memory is still 172.0MB. Free memory was 139.1MB in the beginning and 119.2MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-19 09:42:35,202 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 104.9MB. Free memory is still 75.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 09:42:35,203 INFO L158 Benchmark]: CACSL2BoogieTranslator took 540.36ms. Allocated memory is still 172.0MB. Free memory was 139.1MB in the beginning and 119.2MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-19 09:42:35,204 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 104.9MB. Free memory is still 75.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 540.36ms. Allocated memory is still 172.0MB. Free memory was 139.1MB in the beginning and 119.2MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1051]: 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_92-evilcollapse_racing-deref.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 dda5467f7679a243042daf02aae11f74f39b907c2525dfc042cb8ad8b69dcfc9 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 09:42:37,218 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 09:42:37,305 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-19 09:42:37,310 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 09:42:37,313 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 09:42:37,339 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 09:42:37,340 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 09:42:37,341 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 09:42:37,341 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 09:42:37,342 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 09:42:37,342 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 09:42:37,342 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 09:42:37,344 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 09:42:37,345 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 09:42:37,346 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 09:42:37,346 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 09:42:37,346 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 09:42:37,347 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 09:42:37,347 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 09:42:37,347 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 09:42:37,347 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 09:42:37,351 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 09:42:37,352 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 09:42:37,352 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 09:42:37,352 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 09:42:37,352 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-19 09:42:37,353 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 09:42:37,353 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-19 09:42:37,353 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 09:42:37,353 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 09:42:37,353 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 09:42:37,354 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 09:42:37,354 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 09:42:37,354 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 09:42:37,354 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 09:42:37,355 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:42:37,355 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 09:42:37,357 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 09:42:37,359 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-19 09:42:37,360 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-19 09:42:37,360 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 09:42:37,360 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 09:42:37,360 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 09:42:37,361 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 09:42:37,361 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dda5467f7679a243042daf02aae11f74f39b907c2525dfc042cb8ad8b69dcfc9 [2024-11-19 09:42:37,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 09:42:37,701 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 09:42:37,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 09:42:37,706 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 09:42:37,707 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 09:42:37,708 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing-deref.i [2024-11-19 09:42:39,261 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 09:42:39,596 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 09:42:39,598 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing-deref.i [2024-11-19 09:42:39,624 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dec381879/4c227d23dd7942f0a6b93b7a39dd4387/FLAGf74ce2173 [2024-11-19 09:42:39,895 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dec381879/4c227d23dd7942f0a6b93b7a39dd4387 [2024-11-19 09:42:39,897 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 09:42:39,898 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 09:42:39,900 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 09:42:39,900 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 09:42:39,906 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 09:42:39,907 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:42:39" (1/1) ... [2024-11-19 09:42:39,909 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75687d74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:42:39, skipping insertion in model container [2024-11-19 09:42:39,909 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:42:39" (1/1) ... [2024-11-19 09:42:39,954 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 09:42:40,447 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-19 09:42:40,447 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-19 09:42:40,448 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-19 09:42:40,448 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-19 09:42:40,482 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:42:40,542 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-19 09:42:40,551 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 09:42:40,597 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-19 09:42:40,597 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-19 09:42:40,598 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-19 09:42:40,599 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-19 09:42:40,613 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:42:40,640 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 09:42:40,686 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-19 09:42:40,688 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-19 09:42:40,688 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-19 09:42:40,689 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-19 09:42:40,704 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:42:40,811 INFO L204 MainTranslator]: Completed translation [2024-11-19 09:42:40,812 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:42:40 WrapperNode [2024-11-19 09:42:40,812 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 09:42:40,813 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 09:42:40,813 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 09:42:40,813 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 09:42:40,820 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:42:40" (1/1) ... [2024-11-19 09:42:40,853 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:42:40" (1/1) ... [2024-11-19 09:42:40,895 INFO L138 Inliner]: procedures = 284, calls = 126, calls flagged for inlining = 12, calls inlined = 13, statements flattened = 303 [2024-11-19 09:42:40,896 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 09:42:40,897 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 09:42:40,897 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 09:42:40,897 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 09:42:40,910 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:42:40" (1/1) ... [2024-11-19 09:42:40,910 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:42:40" (1/1) ... [2024-11-19 09:42:40,920 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:42:40" (1/1) ... [2024-11-19 09:42:40,957 INFO L175 MemorySlicer]: Split 100 memory accesses to 4 slices as follows [2, 5, 91, 2]. 91 percent of accesses are in the largest equivalence class. The 77 initializations are split as follows [2, 5, 70, 0]. The 13 writes are split as follows [0, 0, 12, 1]. [2024-11-19 09:42:40,957 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:42:40" (1/1) ... [2024-11-19 09:42:40,957 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:42:40" (1/1) ... [2024-11-19 09:42:40,986 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:42:40" (1/1) ... [2024-11-19 09:42:40,994 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:42:40" (1/1) ... [2024-11-19 09:42:40,997 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:42:40" (1/1) ... [2024-11-19 09:42:41,003 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:42:40" (1/1) ... [2024-11-19 09:42:41,012 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 09:42:41,013 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 09:42:41,013 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 09:42:41,013 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 09:42:41,014 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:42:40" (1/1) ... [2024-11-19 09:42:41,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:42:41,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:42:41,055 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 09:42:41,061 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 09:42:41,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-19 09:42:41,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-19 09:42:41,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-19 09:42:41,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2024-11-19 09:42:41,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-19 09:42:41,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-19 09:42:41,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-19 09:42:41,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-19 09:42:41,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-19 09:42:41,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 09:42:41,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-19 09:42:41,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-19 09:42:41,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-19 09:42:41,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2024-11-19 09:42:41,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-19 09:42:41,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-19 09:42:41,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-19 09:42:41,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-19 09:42:41,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-19 09:42:41,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-19 09:42:41,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-19 09:42:41,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-11-19 09:42:41,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-11-19 09:42:41,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2024-11-19 09:42:41,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2024-11-19 09:42:41,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2024-11-19 09:42:41,104 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-19 09:42:41,104 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-19 09:42:41,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 09:42:41,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 09:42:41,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-19 09:42:41,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-19 09:42:41,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-19 09:42:41,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-19 09:42:41,105 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-19 09:42:41,105 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-19 09:42:41,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 09:42:41,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 09:42:41,110 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 09:42:41,341 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 09:42:41,343 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 09:42:42,308 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 09:42:42,310 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 09:42:43,867 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 09:42:43,867 INFO L316 CfgBuilder]: Removed 16 assume(true) statements. [2024-11-19 09:42:43,868 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:42:43 BoogieIcfgContainer [2024-11-19 09:42:43,868 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 09:42:43,871 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 09:42:43,871 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 09:42:43,875 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 09:42:43,875 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:42:39" (1/3) ... [2024-11-19 09:42:43,876 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b82fc44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:42:43, skipping insertion in model container [2024-11-19 09:42:43,876 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:42:40" (2/3) ... [2024-11-19 09:42:43,876 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b82fc44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:42:43, skipping insertion in model container [2024-11-19 09:42:43,877 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:42:43" (3/3) ... [2024-11-19 09:42:43,878 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_92-evilcollapse_racing-deref.i [2024-11-19 09:42:43,896 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 09:42:43,897 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 48 error locations. [2024-11-19 09:42:43,897 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 09:42:43,980 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-19 09:42:44,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 133 transitions, 273 flow [2024-11-19 09:42:44,075 INFO L124 PetriNetUnfolderBase]: 18/145 cut-off events. [2024-11-19 09:42:44,076 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-19 09:42:44,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 145 events. 18/145 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 530 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 82. Up to 4 conditions per place. [2024-11-19 09:42:44,079 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 133 transitions, 273 flow [2024-11-19 09:42:44,084 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 133 transitions, 273 flow [2024-11-19 09:42:44,091 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:42:44,097 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;@218805ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:42:44,098 INFO L334 AbstractCegarLoop]: Starting to check reachability of 64 error locations. [2024-11-19 09:42:44,106 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:42:44,107 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-19 09:42:44,107 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:42:44,107 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:42:44,108 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 09:42:44,108 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-19 09:42:44,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:42:44,115 INFO L85 PathProgramCache]: Analyzing trace with hash 832920, now seen corresponding path program 1 times [2024-11-19 09:42:44,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 09:42:44,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1221834822] [2024-11-19 09:42:44,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:42:44,130 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 09:42:44,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 09:42:44,132 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 09:42:44,134 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 09:42:44,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:42:44,361 INFO L255 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 09:42:44,366 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:42:44,440 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 09:42:44,440 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:42:44,441 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-19 09:42:44,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1221834822] [2024-11-19 09:42:44,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1221834822] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:42:44,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:42:44,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:42:44,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169022535] [2024-11-19 09:42:44,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:42:44,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:42:44,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-19 09:42:44,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:42:44,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:42:44,689 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 133 [2024-11-19 09:42:44,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 133 transitions, 273 flow. Second operand has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 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 09:42:44,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:42:44,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 133 [2024-11-19 09:42:44,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:42:45,143 INFO L124 PetriNetUnfolderBase]: 125/490 cut-off events. [2024-11-19 09:42:45,143 INFO L125 PetriNetUnfolderBase]: For 5/6 co-relation queries the response was YES. [2024-11-19 09:42:45,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 769 conditions, 490 events. 125/490 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2675 event pairs, 64 based on Foata normal form. 52/431 useless extension candidates. Maximal degree in co-relation 675. Up to 177 conditions per place. [2024-11-19 09:42:45,149 INFO L140 encePairwiseOnDemand]: 112/133 looper letters, 66 selfloop transitions, 4 changer transitions 0/139 dead transitions. [2024-11-19 09:42:45,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 139 transitions, 425 flow [2024-11-19 09:42:45,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:42:45,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:42:45,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 375 transitions. [2024-11-19 09:42:45,164 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7048872180451128 [2024-11-19 09:42:45,166 INFO L175 Difference]: Start difference. First operand has 118 places, 133 transitions, 273 flow. Second operand 4 states and 375 transitions. [2024-11-19 09:42:45,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 139 transitions, 425 flow [2024-11-19 09:42:45,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 139 transitions, 425 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 09:42:45,173 INFO L231 Difference]: Finished difference. Result has 117 places, 116 transitions, 253 flow [2024-11-19 09:42:45,175 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=253, PETRI_PLACES=117, PETRI_TRANSITIONS=116} [2024-11-19 09:42:45,180 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, -1 predicate places. [2024-11-19 09:42:45,180 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 116 transitions, 253 flow [2024-11-19 09:42:45,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 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 09:42:45,181 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:42:45,181 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 09:42:45,187 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 09:42:45,381 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 09:42:45,383 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-19 09:42:45,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:42:45,383 INFO L85 PathProgramCache]: Analyzing trace with hash 832921, now seen corresponding path program 1 times [2024-11-19 09:42:45,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 09:42:45,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1719808720] [2024-11-19 09:42:45,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:42:45,385 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 09:42:45,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 09:42:45,391 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 09:42:45,396 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 09:42:45,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:42:45,525 INFO L255 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 09:42:45,526 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:42:45,585 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 09:42:45,586 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:42:45,586 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-19 09:42:45,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1719808720] [2024-11-19 09:42:45,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1719808720] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:42:45,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:42:45,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:42:45,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084165916] [2024-11-19 09:42:45,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:42:45,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:42:45,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-19 09:42:45,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:42:45,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:42:45,803 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 133 [2024-11-19 09:42:45,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 116 transitions, 253 flow. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 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 09:42:45,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:42:45,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 133 [2024-11-19 09:42:45,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:42:46,166 INFO L124 PetriNetUnfolderBase]: 127/521 cut-off events. [2024-11-19 09:42:46,166 INFO L125 PetriNetUnfolderBase]: For 25/26 co-relation queries the response was YES. [2024-11-19 09:42:46,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 859 conditions, 521 events. 127/521 cut-off events. For 25/26 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2796 event pairs, 105 based on Foata normal form. 3/410 useless extension candidates. Maximal degree in co-relation 743. Up to 274 conditions per place. [2024-11-19 09:42:46,176 INFO L140 encePairwiseOnDemand]: 125/133 looper letters, 47 selfloop transitions, 5 changer transitions 0/120 dead transitions. [2024-11-19 09:42:46,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 120 transitions, 371 flow [2024-11-19 09:42:46,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:42:46,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:42:46,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 343 transitions. [2024-11-19 09:42:46,182 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6447368421052632 [2024-11-19 09:42:46,182 INFO L175 Difference]: Start difference. First operand has 117 places, 116 transitions, 253 flow. Second operand 4 states and 343 transitions. [2024-11-19 09:42:46,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 120 transitions, 371 flow [2024-11-19 09:42:46,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 120 transitions, 359 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 09:42:46,186 INFO L231 Difference]: Finished difference. Result has 119 places, 120 transitions, 286 flow [2024-11-19 09:42:46,186 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=286, PETRI_PLACES=119, PETRI_TRANSITIONS=120} [2024-11-19 09:42:46,187 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 1 predicate places. [2024-11-19 09:42:46,187 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 120 transitions, 286 flow [2024-11-19 09:42:46,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 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 09:42:46,188 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:42:46,188 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 09:42:46,193 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-19 09:42:46,392 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 09:42:46,393 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-19 09:42:46,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:42:46,395 INFO L85 PathProgramCache]: Analyzing trace with hash -955496144, now seen corresponding path program 1 times [2024-11-19 09:42:46,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 09:42:46,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1785054587] [2024-11-19 09:42:46,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:42:46,396 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 09:42:46,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 09:42:46,398 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 09:42:46,399 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 09:42:46,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:42:46,558 INFO L255 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 09:42:46,559 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:42:46,592 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 09:42:46,603 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 09:42:46,604 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:42:46,604 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-19 09:42:46,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1785054587] [2024-11-19 09:42:46,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1785054587] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:42:46,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:42:46,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:42:46,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747817509] [2024-11-19 09:42:46,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:42:46,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:42:46,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-19 09:42:46,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:42:46,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:42:46,724 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 133 [2024-11-19 09:42:46,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 120 transitions, 286 flow. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 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 09:42:46,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:42:46,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 133 [2024-11-19 09:42:46,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:42:47,007 INFO L124 PetriNetUnfolderBase]: 127/520 cut-off events. [2024-11-19 09:42:47,008 INFO L125 PetriNetUnfolderBase]: For 14/15 co-relation queries the response was YES. [2024-11-19 09:42:47,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 844 conditions, 520 events. 127/520 cut-off events. For 14/15 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2810 event pairs, 105 based on Foata normal form. 0/405 useless extension candidates. Maximal degree in co-relation 811. Up to 270 conditions per place. [2024-11-19 09:42:47,012 INFO L140 encePairwiseOnDemand]: 130/133 looper letters, 45 selfloop transitions, 3 changer transitions 0/119 dead transitions. [2024-11-19 09:42:47,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 119 transitions, 380 flow [2024-11-19 09:42:47,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:42:47,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:42:47,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 270 transitions. [2024-11-19 09:42:47,015 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6766917293233082 [2024-11-19 09:42:47,015 INFO L175 Difference]: Start difference. First operand has 119 places, 120 transitions, 286 flow. Second operand 3 states and 270 transitions. [2024-11-19 09:42:47,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 119 transitions, 380 flow [2024-11-19 09:42:47,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 119 transitions, 377 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:42:47,019 INFO L231 Difference]: Finished difference. Result has 119 places, 119 transitions, 287 flow [2024-11-19 09:42:47,019 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=287, PETRI_PLACES=119, PETRI_TRANSITIONS=119} [2024-11-19 09:42:47,020 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 1 predicate places. [2024-11-19 09:42:47,020 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 119 transitions, 287 flow [2024-11-19 09:42:47,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 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 09:42:47,021 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:42:47,021 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 09:42:47,028 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 09:42:47,221 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 09:42:47,222 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-19 09:42:47,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:42:47,223 INFO L85 PathProgramCache]: Analyzing trace with hash -955496143, now seen corresponding path program 1 times [2024-11-19 09:42:47,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 09:42:47,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2138766572] [2024-11-19 09:42:47,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:42:47,224 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 09:42:47,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 09:42:47,228 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 09:42:47,229 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 09:42:47,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:42:47,394 INFO L255 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 09:42:47,395 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:42:47,403 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 09:42:47,413 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 09:42:47,413 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:42:47,414 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-19 09:42:47,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2138766572] [2024-11-19 09:42:47,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2138766572] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:42:47,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:42:47,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:42:47,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630998335] [2024-11-19 09:42:47,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:42:47,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:42:47,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-19 09:42:47,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:42:47,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:42:47,562 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 133 [2024-11-19 09:42:47,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 119 transitions, 287 flow. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 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 09:42:47,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:42:47,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 133 [2024-11-19 09:42:47,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:42:47,820 INFO L124 PetriNetUnfolderBase]: 127/519 cut-off events. [2024-11-19 09:42:47,820 INFO L125 PetriNetUnfolderBase]: For 16/17 co-relation queries the response was YES. [2024-11-19 09:42:47,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 844 conditions, 519 events. 127/519 cut-off events. For 16/17 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2810 event pairs, 105 based on Foata normal form. 0/406 useless extension candidates. Maximal degree in co-relation 810. Up to 270 conditions per place. [2024-11-19 09:42:47,826 INFO L140 encePairwiseOnDemand]: 130/133 looper letters, 45 selfloop transitions, 3 changer transitions 0/118 dead transitions. [2024-11-19 09:42:47,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 118 transitions, 381 flow [2024-11-19 09:42:47,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:42:47,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:42:47,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 270 transitions. [2024-11-19 09:42:47,832 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6766917293233082 [2024-11-19 09:42:47,832 INFO L175 Difference]: Start difference. First operand has 119 places, 119 transitions, 287 flow. Second operand 3 states and 270 transitions. [2024-11-19 09:42:47,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 118 transitions, 381 flow [2024-11-19 09:42:47,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 118 transitions, 375 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:42:47,836 INFO L231 Difference]: Finished difference. Result has 118 places, 118 transitions, 285 flow [2024-11-19 09:42:47,841 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=285, PETRI_PLACES=118, PETRI_TRANSITIONS=118} [2024-11-19 09:42:47,842 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 0 predicate places. [2024-11-19 09:42:47,842 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 118 transitions, 285 flow [2024-11-19 09:42:47,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 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 09:42:47,843 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:42:47,843 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-19 09:42:47,851 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 (5)] Forceful destruction successful, exit code 0 [2024-11-19 09:42:48,047 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 09:42:48,048 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-19 09:42:48,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:42:48,048 INFO L85 PathProgramCache]: Analyzing trace with hash 444395612, now seen corresponding path program 1 times [2024-11-19 09:42:48,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 09:42:48,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [284851078] [2024-11-19 09:42:48,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:42:48,049 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 09:42:48,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 09:42:48,053 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 09:42:48,054 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 09:42:48,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:42:48,195 INFO L255 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 09:42:48,196 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:42:48,204 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 09:42:48,204 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:42:48,204 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-19 09:42:48,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [284851078] [2024-11-19 09:42:48,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [284851078] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:42:48,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:42:48,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:42:48,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764916885] [2024-11-19 09:42:48,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:42:48,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:42:48,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-19 09:42:48,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:42:48,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:42:48,207 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 133 [2024-11-19 09:42:48,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 118 transitions, 285 flow. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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 09:42:48,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:42:48,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 133 [2024-11-19 09:42:48,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:42:48,455 INFO L124 PetriNetUnfolderBase]: 126/541 cut-off events. [2024-11-19 09:42:48,455 INFO L125 PetriNetUnfolderBase]: For 18/19 co-relation queries the response was YES. [2024-11-19 09:42:48,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 872 conditions, 541 events. 126/541 cut-off events. For 18/19 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2814 event pairs, 105 based on Foata normal form. 2/419 useless extension candidates. Maximal degree in co-relation 841. Up to 270 conditions per place. [2024-11-19 09:42:48,458 INFO L140 encePairwiseOnDemand]: 130/133 looper letters, 49 selfloop transitions, 3 changer transitions 0/122 dead transitions. [2024-11-19 09:42:48,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 122 transitions, 401 flow [2024-11-19 09:42:48,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:42:48,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:42:48,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 278 transitions. [2024-11-19 09:42:48,460 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6967418546365914 [2024-11-19 09:42:48,461 INFO L175 Difference]: Start difference. First operand has 118 places, 118 transitions, 285 flow. Second operand 3 states and 278 transitions. [2024-11-19 09:42:48,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 122 transitions, 401 flow [2024-11-19 09:42:48,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 122 transitions, 391 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:42:48,466 INFO L231 Difference]: Finished difference. Result has 119 places, 118 transitions, 290 flow [2024-11-19 09:42:48,467 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=290, PETRI_PLACES=119, PETRI_TRANSITIONS=118} [2024-11-19 09:42:48,467 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 1 predicate places. [2024-11-19 09:42:48,467 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 118 transitions, 290 flow [2024-11-19 09:42:48,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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 09:42:48,468 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:42:48,468 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:42:48,475 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-11-19 09:42:48,670 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 09:42:48,671 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-19 09:42:48,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:42:48,672 INFO L85 PathProgramCache]: Analyzing trace with hash 444391471, now seen corresponding path program 1 times [2024-11-19 09:42:48,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 09:42:48,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1346513230] [2024-11-19 09:42:48,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:42:48,673 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 09:42:48,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 09:42:48,675 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 09:42:48,677 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 09:42:48,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:42:48,868 INFO L255 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 09:42:48,870 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:42:48,882 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 09:42:48,914 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 09:42:48,915 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:42:48,915 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-19 09:42:48,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1346513230] [2024-11-19 09:42:48,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1346513230] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:42:48,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:42:48,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:42:48,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721962044] [2024-11-19 09:42:48,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:42:48,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:42:48,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-19 09:42:48,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:42:48,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:42:49,143 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 133 [2024-11-19 09:42:49,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 118 transitions, 290 flow. Second operand has 4 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 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 09:42:49,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:42:49,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 133 [2024-11-19 09:42:49,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:42:49,474 INFO L124 PetriNetUnfolderBase]: 126/537 cut-off events. [2024-11-19 09:42:49,474 INFO L125 PetriNetUnfolderBase]: For 33/34 co-relation queries the response was YES. [2024-11-19 09:42:49,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 872 conditions, 537 events. 126/537 cut-off events. For 33/34 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2790 event pairs, 105 based on Foata normal form. 2/419 useless extension candidates. Maximal degree in co-relation 837. Up to 274 conditions per place. [2024-11-19 09:42:49,478 INFO L140 encePairwiseOnDemand]: 128/133 looper letters, 46 selfloop transitions, 4 changer transitions 0/116 dead transitions. [2024-11-19 09:42:49,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 116 transitions, 386 flow [2024-11-19 09:42:49,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:42:49,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:42:49,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 332 transitions. [2024-11-19 09:42:49,480 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6240601503759399 [2024-11-19 09:42:49,480 INFO L175 Difference]: Start difference. First operand has 119 places, 118 transitions, 290 flow. Second operand 4 states and 332 transitions. [2024-11-19 09:42:49,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 116 transitions, 386 flow [2024-11-19 09:42:49,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 116 transitions, 383 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:42:49,486 INFO L231 Difference]: Finished difference. Result has 119 places, 116 transitions, 291 flow [2024-11-19 09:42:49,486 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=291, PETRI_PLACES=119, PETRI_TRANSITIONS=116} [2024-11-19 09:42:49,488 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 1 predicate places. [2024-11-19 09:42:49,488 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 116 transitions, 291 flow [2024-11-19 09:42:49,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 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 09:42:49,489 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:42:49,489 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:42:49,498 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 (7)] Ended with exit code 0 [2024-11-19 09:42:49,689 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 09:42:49,690 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-19 09:42:49,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:42:49,691 INFO L85 PathProgramCache]: Analyzing trace with hash 444391470, now seen corresponding path program 1 times [2024-11-19 09:42:49,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 09:42:49,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1931947953] [2024-11-19 09:42:49,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:42:49,692 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 09:42:49,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 09:42:49,695 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 09:42:49,696 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 09:42:49,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:42:49,887 INFO L255 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 09:42:49,889 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:42:49,897 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 09:42:49,912 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 09:42:49,912 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:42:49,912 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-19 09:42:49,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1931947953] [2024-11-19 09:42:49,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1931947953] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:42:49,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:42:49,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:42:49,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195186616] [2024-11-19 09:42:49,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:42:49,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:42:49,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-19 09:42:49,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:42:49,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:42:50,018 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 133 [2024-11-19 09:42:50,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 116 transitions, 291 flow. Second operand has 4 states, 4 states have (on average 70.75) internal successors, (283), 4 states have internal predecessors, (283), 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 09:42:50,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:42:50,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 133 [2024-11-19 09:42:50,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:42:50,323 INFO L124 PetriNetUnfolderBase]: 126/533 cut-off events. [2024-11-19 09:42:50,324 INFO L125 PetriNetUnfolderBase]: For 18/19 co-relation queries the response was YES. [2024-11-19 09:42:50,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 876 conditions, 533 events. 126/533 cut-off events. For 18/19 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2787 event pairs, 105 based on Foata normal form. 2/417 useless extension candidates. Maximal degree in co-relation 841. Up to 272 conditions per place. [2024-11-19 09:42:50,327 INFO L140 encePairwiseOnDemand]: 126/133 looper letters, 43 selfloop transitions, 7 changer transitions 0/114 dead transitions. [2024-11-19 09:42:50,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 114 transitions, 387 flow [2024-11-19 09:42:50,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 09:42:50,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 09:42:50,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 393 transitions. [2024-11-19 09:42:50,329 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5909774436090226 [2024-11-19 09:42:50,330 INFO L175 Difference]: Start difference. First operand has 119 places, 116 transitions, 291 flow. Second operand 5 states and 393 transitions. [2024-11-19 09:42:50,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 114 transitions, 387 flow [2024-11-19 09:42:50,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 114 transitions, 379 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 09:42:50,333 INFO L231 Difference]: Finished difference. Result has 118 places, 114 transitions, 293 flow [2024-11-19 09:42:50,333 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=293, PETRI_PLACES=118, PETRI_TRANSITIONS=114} [2024-11-19 09:42:50,334 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 0 predicate places. [2024-11-19 09:42:50,334 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 114 transitions, 293 flow [2024-11-19 09:42:50,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.75) internal successors, (283), 4 states have internal predecessors, (283), 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 09:42:50,335 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:42:50,335 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:42:50,343 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 09:42:50,539 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 09:42:50,540 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-19 09:42:50,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:42:50,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1858467739, now seen corresponding path program 1 times [2024-11-19 09:42:50,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 09:42:50,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2062029925] [2024-11-19 09:42:50,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:42:50,541 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 09:42:50,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 09:42:50,543 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 09:42:50,544 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 09:42:51,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:42:51,069 INFO L255 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 09:42:51,072 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:42:51,156 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-19 09:42:51,156 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 09:42:51,200 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 09:42:51,200 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:42:51,200 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-19 09:42:51,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2062029925] [2024-11-19 09:42:51,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2062029925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:42:51,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:42:51,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:42:51,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079408500] [2024-11-19 09:42:51,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:42:51,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:42:51,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-19 09:42:51,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:42:51,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:42:51,331 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 133 [2024-11-19 09:42:51,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 114 transitions, 293 flow. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 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 09:42:51,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:42:51,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 133 [2024-11-19 09:42:51,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:42:51,693 INFO L124 PetriNetUnfolderBase]: 125/503 cut-off events. [2024-11-19 09:42:51,693 INFO L125 PetriNetUnfolderBase]: For 27/28 co-relation queries the response was YES. [2024-11-19 09:42:51,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 850 conditions, 503 events. 125/503 cut-off events. For 27/28 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2609 event pairs, 64 based on Foata normal form. 2/397 useless extension candidates. Maximal degree in co-relation 813. Up to 180 conditions per place. [2024-11-19 09:42:51,696 INFO L140 encePairwiseOnDemand]: 127/133 looper letters, 67 selfloop transitions, 5 changer transitions 0/135 dead transitions. [2024-11-19 09:42:51,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 135 transitions, 479 flow [2024-11-19 09:42:51,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:42:51,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:42:51,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 354 transitions. [2024-11-19 09:42:51,699 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6654135338345865 [2024-11-19 09:42:51,699 INFO L175 Difference]: Start difference. First operand has 118 places, 114 transitions, 293 flow. Second operand 4 states and 354 transitions. [2024-11-19 09:42:51,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 135 transitions, 479 flow [2024-11-19 09:42:51,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 135 transitions, 465 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 09:42:51,703 INFO L231 Difference]: Finished difference. Result has 115 places, 112 transitions, 285 flow [2024-11-19 09:42:51,703 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=285, PETRI_PLACES=115, PETRI_TRANSITIONS=112} [2024-11-19 09:42:51,704 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, -3 predicate places. [2024-11-19 09:42:51,704 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 112 transitions, 285 flow [2024-11-19 09:42:51,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 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 09:42:51,705 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:42:51,705 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:42:51,713 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 09:42:51,905 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 09:42:51,906 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-19 09:42:51,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:42:51,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1858467740, now seen corresponding path program 1 times [2024-11-19 09:42:51,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 09:42:51,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [724526473] [2024-11-19 09:42:51,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:42:51,907 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 09:42:51,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 09:42:51,909 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 09:42:51,910 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 09:42:52,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:42:52,487 INFO L255 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 09:42:52,489 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:42:52,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 09:42:52,618 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 09:42:52,692 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 09:42:52,692 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:42:52,692 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-19 09:42:52,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [724526473] [2024-11-19 09:42:52,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [724526473] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:42:52,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:42:52,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:42:52,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953976589] [2024-11-19 09:42:52,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:42:52,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:42:52,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-19 09:42:52,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:42:52,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 09:42:52,983 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 133 [2024-11-19 09:42:52,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 112 transitions, 285 flow. Second operand has 5 states, 5 states have (on average 72.4) internal successors, (362), 5 states have internal predecessors, (362), 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 09:42:52,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:42:52,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 133 [2024-11-19 09:42:52,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:42:53,392 INFO L124 PetriNetUnfolderBase]: 128/561 cut-off events. [2024-11-19 09:42:53,393 INFO L125 PetriNetUnfolderBase]: For 52/53 co-relation queries the response was YES. [2024-11-19 09:42:53,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 948 conditions, 561 events. 128/561 cut-off events. For 52/53 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 3030 event pairs, 106 based on Foata normal form. 2/435 useless extension candidates. Maximal degree in co-relation 857. Up to 281 conditions per place. [2024-11-19 09:42:53,396 INFO L140 encePairwiseOnDemand]: 127/133 looper letters, 53 selfloop transitions, 5 changer transitions 0/119 dead transitions. [2024-11-19 09:42:53,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 119 transitions, 431 flow [2024-11-19 09:42:53,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:42:53,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:42:53,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 341 transitions. [2024-11-19 09:42:53,398 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6409774436090225 [2024-11-19 09:42:53,398 INFO L175 Difference]: Start difference. First operand has 115 places, 112 transitions, 285 flow. Second operand 4 states and 341 transitions. [2024-11-19 09:42:53,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 119 transitions, 431 flow [2024-11-19 09:42:53,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 119 transitions, 415 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 09:42:53,402 INFO L231 Difference]: Finished difference. Result has 117 places, 116 transitions, 321 flow [2024-11-19 09:42:53,402 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=321, PETRI_PLACES=117, PETRI_TRANSITIONS=116} [2024-11-19 09:42:53,402 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, -1 predicate places. [2024-11-19 09:42:53,403 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 116 transitions, 321 flow [2024-11-19 09:42:53,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.4) internal successors, (362), 5 states have internal predecessors, (362), 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 09:42:53,403 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:42:53,403 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:42:53,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-11-19 09:42:53,604 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 09:42:53,604 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-19 09:42:53,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:42:53,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1777925979, now seen corresponding path program 1 times [2024-11-19 09:42:53,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 09:42:53,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [223257979] [2024-11-19 09:42:53,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:42:53,605 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 09:42:53,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 09:42:53,608 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 09:42:53,609 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 09:42:54,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:42:54,243 INFO L255 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-19 09:42:54,246 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:42:54,341 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 09:42:54,350 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 09:42:54,413 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 09:42:54,427 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 09:42:54,501 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-19 09:42:54,502 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 13 [2024-11-19 09:42:54,518 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-19 09:42:54,518 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 09:42:54,608 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 09:42:54,625 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 09:42:54,681 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 09:42:54,697 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 09:42:54,739 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 09:42:54,745 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 09:42:54,820 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 09:42:54,820 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:42:54,821 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-19 09:42:54,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [223257979] [2024-11-19 09:42:54,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [223257979] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:42:54,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:42:54,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 09:42:54,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426059755] [2024-11-19 09:42:54,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:42:54,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 09:42:54,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-19 09:42:54,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 09:42:54,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-19 09:42:55,961 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 133 [2024-11-19 09:42:55,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 116 transitions, 321 flow. Second operand has 10 states, 10 states have (on average 57.0) internal successors, (570), 10 states have internal predecessors, (570), 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 09:42:55,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:42:55,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 133 [2024-11-19 09:42:55,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:42:56,750 INFO L124 PetriNetUnfolderBase]: 128/560 cut-off events. [2024-11-19 09:42:56,751 INFO L125 PetriNetUnfolderBase]: For 26/27 co-relation queries the response was YES. [2024-11-19 09:42:56,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 960 conditions, 560 events. 128/560 cut-off events. For 26/27 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 3013 event pairs, 106 based on Foata normal form. 0/447 useless extension candidates. Maximal degree in co-relation 868. Up to 294 conditions per place. [2024-11-19 09:42:56,754 INFO L140 encePairwiseOnDemand]: 121/133 looper letters, 68 selfloop transitions, 11 changer transitions 0/132 dead transitions. [2024-11-19 09:42:56,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 132 transitions, 517 flow [2024-11-19 09:42:56,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 09:42:56,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 09:42:56,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 695 transitions. [2024-11-19 09:42:56,757 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4750512645249487 [2024-11-19 09:42:56,757 INFO L175 Difference]: Start difference. First operand has 117 places, 116 transitions, 321 flow. Second operand 11 states and 695 transitions. [2024-11-19 09:42:56,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 132 transitions, 517 flow [2024-11-19 09:42:56,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 132 transitions, 515 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:42:56,760 INFO L231 Difference]: Finished difference. Result has 131 places, 121 transitions, 377 flow [2024-11-19 09:42:56,761 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=377, PETRI_PLACES=131, PETRI_TRANSITIONS=121} [2024-11-19 09:42:56,762 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 13 predicate places. [2024-11-19 09:42:56,762 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 121 transitions, 377 flow [2024-11-19 09:42:56,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.0) internal successors, (570), 10 states have internal predecessors, (570), 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 09:42:56,762 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:42:56,762 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:42:56,771 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2024-11-19 09:42:56,963 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 09:42:56,963 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-19 09:42:56,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:42:56,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1777925978, now seen corresponding path program 1 times [2024-11-19 09:42:56,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 09:42:56,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1254061712] [2024-11-19 09:42:56,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:42:56,964 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 09:42:56,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 09:42:56,968 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 09:42:56,969 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 09:42:57,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:42:57,584 INFO L255 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-19 09:42:57,587 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:42:57,650 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 09:42:57,703 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 09:42:57,768 INFO L349 Elim1Store]: treesize reduction 17, result has 19.0 percent of original size [2024-11-19 09:42:57,768 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 09:42:57,795 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 09:42:57,823 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 09:42:57,841 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 09:42:57,881 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 09:42:57,881 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:42:57,881 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-19 09:42:57,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1254061712] [2024-11-19 09:42:57,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1254061712] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:42:57,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:42:57,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 09:42:57,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928877822] [2024-11-19 09:42:57,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:42:57,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 09:42:57,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-19 09:42:57,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 09:42:57,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-19 09:42:58,893 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 133 [2024-11-19 09:42:58,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 121 transitions, 377 flow. Second operand has 10 states, 10 states have (on average 63.0) internal successors, (630), 10 states have internal predecessors, (630), 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 09:42:58,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:42:58,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 133 [2024-11-19 09:42:58,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:42:59,631 INFO L124 PetriNetUnfolderBase]: 126/530 cut-off events. [2024-11-19 09:42:59,631 INFO L125 PetriNetUnfolderBase]: For 37/38 co-relation queries the response was YES. [2024-11-19 09:42:59,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 957 conditions, 530 events. 126/530 cut-off events. For 37/38 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2866 event pairs, 64 based on Foata normal form. 2/428 useless extension candidates. Maximal degree in co-relation 877. Up to 192 conditions per place. [2024-11-19 09:42:59,635 INFO L140 encePairwiseOnDemand]: 121/133 looper letters, 75 selfloop transitions, 20 changer transitions 0/152 dead transitions. [2024-11-19 09:42:59,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 152 transitions, 639 flow [2024-11-19 09:42:59,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 09:42:59,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 09:42:59,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 766 transitions. [2024-11-19 09:42:59,638 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5235816814764184 [2024-11-19 09:42:59,638 INFO L175 Difference]: Start difference. First operand has 131 places, 121 transitions, 377 flow. Second operand 11 states and 766 transitions. [2024-11-19 09:42:59,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 152 transitions, 639 flow [2024-11-19 09:42:59,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 152 transitions, 635 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:42:59,643 INFO L231 Difference]: Finished difference. Result has 144 places, 126 transitions, 465 flow [2024-11-19 09:42:59,643 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=465, PETRI_PLACES=144, PETRI_TRANSITIONS=126} [2024-11-19 09:42:59,644 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 26 predicate places. [2024-11-19 09:42:59,644 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 126 transitions, 465 flow [2024-11-19 09:42:59,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 63.0) internal successors, (630), 10 states have internal predecessors, (630), 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 09:42:59,645 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:42:59,646 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:42:59,653 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 (12)] Forceful destruction successful, exit code 0 [2024-11-19 09:42:59,846 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 09:42:59,846 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-19 09:42:59,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:42:59,847 INFO L85 PathProgramCache]: Analyzing trace with hash -718868725, now seen corresponding path program 1 times [2024-11-19 09:42:59,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 09:42:59,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1177319928] [2024-11-19 09:42:59,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:42:59,848 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 09:42:59,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 09:42:59,849 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 09:42:59,850 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 09:43:00,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:43:00,014 INFO L255 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 09:43:00,016 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:43:00,020 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 09:43:00,053 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 09:43:00,053 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:43:00,053 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-19 09:43:00,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1177319928] [2024-11-19 09:43:00,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1177319928] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:43:00,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:43:00,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:43:00,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086373816] [2024-11-19 09:43:00,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:43:00,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:43:00,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-19 09:43:00,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:43:00,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:43:00,227 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 133 [2024-11-19 09:43:00,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 126 transitions, 465 flow. Second operand has 4 states, 4 states have (on average 75.0) internal successors, (300), 4 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:43:00,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:43:00,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 133 [2024-11-19 09:43:00,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:43:00,490 INFO L124 PetriNetUnfolderBase]: 127/548 cut-off events. [2024-11-19 09:43:00,490 INFO L125 PetriNetUnfolderBase]: For 121/122 co-relation queries the response was YES. [2024-11-19 09:43:00,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1017 conditions, 548 events. 127/548 cut-off events. For 121/122 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2935 event pairs, 105 based on Foata normal form. 8/447 useless extension candidates. Maximal degree in co-relation 928. Up to 271 conditions per place. [2024-11-19 09:43:00,494 INFO L140 encePairwiseOnDemand]: 128/133 looper letters, 48 selfloop transitions, 11 changer transitions 0/124 dead transitions. [2024-11-19 09:43:00,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 124 transitions, 579 flow [2024-11-19 09:43:00,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:43:00,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:43:00,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 338 transitions. [2024-11-19 09:43:00,496 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6353383458646616 [2024-11-19 09:43:00,496 INFO L175 Difference]: Start difference. First operand has 144 places, 126 transitions, 465 flow. Second operand 4 states and 338 transitions. [2024-11-19 09:43:00,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 124 transitions, 579 flow [2024-11-19 09:43:00,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 124 transitions, 555 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-19 09:43:00,501 INFO L231 Difference]: Finished difference. Result has 140 places, 124 transitions, 459 flow [2024-11-19 09:43:00,501 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=459, PETRI_PLACES=140, PETRI_TRANSITIONS=124} [2024-11-19 09:43:00,503 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 22 predicate places. [2024-11-19 09:43:00,503 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 124 transitions, 459 flow [2024-11-19 09:43:00,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.0) internal successors, (300), 4 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:43:00,504 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:43:00,504 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:43:00,511 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 09:43:00,704 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 09:43:00,705 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-19 09:43:00,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:43:00,705 INFO L85 PathProgramCache]: Analyzing trace with hash -718868726, now seen corresponding path program 1 times [2024-11-19 09:43:00,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 09:43:00,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2143439422] [2024-11-19 09:43:00,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:43:00,706 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 09:43:00,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 09:43:00,707 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 09:43:00,708 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 09:43:00,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:43:00,885 INFO L255 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 09:43:00,887 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:43:00,890 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 09:43:00,904 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 09:43:00,904 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:43:00,904 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-19 09:43:00,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2143439422] [2024-11-19 09:43:00,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2143439422] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:43:00,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:43:00,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:43:00,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718780369] [2024-11-19 09:43:00,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:43:00,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:43:00,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-19 09:43:00,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:43:00,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:43:01,065 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 133 [2024-11-19 09:43:01,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 124 transitions, 459 flow. Second operand has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 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 09:43:01,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:43:01,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 133 [2024-11-19 09:43:01,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:43:01,303 INFO L124 PetriNetUnfolderBase]: 127/540 cut-off events. [2024-11-19 09:43:01,304 INFO L125 PetriNetUnfolderBase]: For 117/118 co-relation queries the response was YES. [2024-11-19 09:43:01,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 993 conditions, 540 events. 127/540 cut-off events. For 117/118 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2895 event pairs, 105 based on Foata normal form. 0/438 useless extension candidates. Maximal degree in co-relation 905. Up to 271 conditions per place. [2024-11-19 09:43:01,307 INFO L140 encePairwiseOnDemand]: 128/133 looper letters, 50 selfloop transitions, 11 changer transitions 0/122 dead transitions. [2024-11-19 09:43:01,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 122 transitions, 577 flow [2024-11-19 09:43:01,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:43:01,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:43:01,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 332 transitions. [2024-11-19 09:43:01,309 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6240601503759399 [2024-11-19 09:43:01,309 INFO L175 Difference]: Start difference. First operand has 140 places, 124 transitions, 459 flow. Second operand 4 states and 332 transitions. [2024-11-19 09:43:01,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 122 transitions, 577 flow [2024-11-19 09:43:01,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 122 transitions, 555 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 09:43:01,313 INFO L231 Difference]: Finished difference. Result has 138 places, 122 transitions, 455 flow [2024-11-19 09:43:01,313 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=455, PETRI_PLACES=138, PETRI_TRANSITIONS=122} [2024-11-19 09:43:01,314 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 20 predicate places. [2024-11-19 09:43:01,314 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 122 transitions, 455 flow [2024-11-19 09:43:01,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 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 09:43:01,314 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:43:01,314 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:43:01,321 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 09:43:01,515 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 09:43:01,515 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-19 09:43:01,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:43:01,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1991896648, now seen corresponding path program 1 times [2024-11-19 09:43:01,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 09:43:01,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [936654512] [2024-11-19 09:43:01,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:43:01,516 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-19 09:43:01,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 09:43:01,518 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 09:43:01,519 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 09:43:01,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:43:01,726 INFO L255 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 09:43:01,727 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:43:01,746 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 09:43:01,746 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:43:01,769 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 09:43:01,769 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-19 09:43:01,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [936654512] [2024-11-19 09:43:01,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [936654512] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:43:01,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 09:43:01,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-11-19 09:43:01,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844880361] [2024-11-19 09:43:01,770 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 09:43:01,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 09:43:01,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-19 09:43:01,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 09:43:01,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-19 09:43:01,771 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 133 [2024-11-19 09:43:01,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 122 transitions, 455 flow. Second operand has 6 states, 6 states have (on average 78.83333333333333) internal successors, (473), 6 states have internal predecessors, (473), 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 09:43:01,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:43:01,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 133 [2024-11-19 09:43:01,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:43:02,175 INFO L124 PetriNetUnfolderBase]: 127/590 cut-off events. [2024-11-19 09:43:02,175 INFO L125 PetriNetUnfolderBase]: For 212/213 co-relation queries the response was YES. [2024-11-19 09:43:02,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1131 conditions, 590 events. 127/590 cut-off events. For 212/213 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3029 event pairs, 105 based on Foata normal form. 6/494 useless extension candidates. Maximal degree in co-relation 968. Up to 267 conditions per place. [2024-11-19 09:43:02,178 INFO L140 encePairwiseOnDemand]: 129/133 looper letters, 63 selfloop transitions, 11 changer transitions 0/137 dead transitions. [2024-11-19 09:43:02,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 137 transitions, 715 flow [2024-11-19 09:43:02,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 09:43:02,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 09:43:02,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 519 transitions. [2024-11-19 09:43:02,181 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.650375939849624 [2024-11-19 09:43:02,181 INFO L175 Difference]: Start difference. First operand has 138 places, 122 transitions, 455 flow. Second operand 6 states and 519 transitions. [2024-11-19 09:43:02,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 137 transitions, 715 flow [2024-11-19 09:43:02,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 137 transitions, 671 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 09:43:02,186 INFO L231 Difference]: Finished difference. Result has 144 places, 127 transitions, 521 flow [2024-11-19 09:43:02,186 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=521, PETRI_PLACES=144, PETRI_TRANSITIONS=127} [2024-11-19 09:43:02,187 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 26 predicate places. [2024-11-19 09:43:02,187 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 127 transitions, 521 flow [2024-11-19 09:43:02,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.83333333333333) internal successors, (473), 6 states have internal predecessors, (473), 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 09:43:02,188 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:43:02,188 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:43:02,196 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 09:43:02,388 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 09:43:02,389 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-19 09:43:02,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:43:02,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1447423873, now seen corresponding path program 1 times [2024-11-19 09:43:02,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 09:43:02,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1288009666] [2024-11-19 09:43:02,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:43:02,390 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 09:43:02,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 09:43:02,391 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 09:43:02,392 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 09:43:03,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:43:03,219 INFO L255 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-19 09:43:03,222 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:43:03,236 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 09:43:03,241 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 09:43:03,396 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 13 treesize of output 9 [2024-11-19 09:43:03,403 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 19 treesize of output 1 [2024-11-19 09:43:03,464 INFO L349 Elim1Store]: treesize reduction 28, result has 34.9 percent of original size [2024-11-19 09:43:03,465 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 26 treesize of output 28 [2024-11-19 09:43:03,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 20 treesize of output 15 [2024-11-19 09:43:03,526 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 30 treesize of output 23 [2024-11-19 09:43:03,536 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 18 treesize of output 13 [2024-11-19 09:43:03,575 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 18 treesize of output 13 [2024-11-19 09:43:03,583 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 30 treesize of output 23 [2024-11-19 09:43:03,609 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 30 treesize of output 23 [2024-11-19 09:43:03,617 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 18 treesize of output 13 [2024-11-19 09:43:03,670 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 21 treesize of output 9 [2024-11-19 09:43:03,694 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 09:43:03,694 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:43:03,808 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))) (and (forall ((v_ArrVal_577 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_577) |c_~#c~0.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_577 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_578 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_577) |c_~#c~0.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_578) |c_~#c~0.base|) .cse1)))))) is different from false [2024-11-19 09:43:03,892 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))) (and (forall ((v_ArrVal_577 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_577) |c_~#c~0.base|) .cse1))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32))))) (forall ((v_ArrVal_577 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_578 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_577) |c_~#c~0.base|) .cse1) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_578) |c_~#c~0.base|) .cse1)))))) is different from false [2024-11-19 09:43:04,170 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 09:43:04,171 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 09:43:04,184 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 09:43:04,184 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 09:43:04,214 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 09:43:04,215 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 09:43:04,248 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 09:43:04,249 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 09:43:04,270 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 09:43:04,280 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 09:43:04,904 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 09:43:04,904 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 09:43:04,931 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 09:43:04,931 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 09:43:04,946 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 09:43:07,544 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 09:43:07,545 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-19 09:43:07,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1288009666] [2024-11-19 09:43:07,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1288009666] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:43:07,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 09:43:07,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2024-11-19 09:43:07,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142173806] [2024-11-19 09:43:07,545 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 09:43:07,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 09:43:07,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-19 09:43:07,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 09:43:07,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=175, Unknown=2, NotChecked=54, Total=272 [2024-11-19 09:43:07,547 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 133 [2024-11-19 09:43:07,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 127 transitions, 521 flow. Second operand has 17 states, 17 states have (on average 22.235294117647058) internal successors, (378), 17 states have internal predecessors, (378), 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 09:43:07,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:43:07,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 133 [2024-11-19 09:43:07,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:43:11,129 INFO L124 PetriNetUnfolderBase]: 465/1264 cut-off events. [2024-11-19 09:43:11,130 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2024-11-19 09:43:11,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2561 conditions, 1264 events. 465/1264 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 7539 event pairs, 422 based on Foata normal form. 6/843 useless extension candidates. Maximal degree in co-relation 2384. Up to 954 conditions per place. [2024-11-19 09:43:11,139 INFO L140 encePairwiseOnDemand]: 123/133 looper letters, 88 selfloop transitions, 24 changer transitions 0/132 dead transitions. [2024-11-19 09:43:11,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 132 transitions, 759 flow [2024-11-19 09:43:11,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 09:43:11,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-19 09:43:11,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 336 transitions. [2024-11-19 09:43:11,142 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.21052631578947367 [2024-11-19 09:43:11,143 INFO L175 Difference]: Start difference. First operand has 144 places, 127 transitions, 521 flow. Second operand 12 states and 336 transitions. [2024-11-19 09:43:11,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 132 transitions, 759 flow [2024-11-19 09:43:11,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 132 transitions, 739 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-11-19 09:43:11,148 INFO L231 Difference]: Finished difference. Result has 155 places, 128 transitions, 557 flow [2024-11-19 09:43:11,148 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=557, PETRI_PLACES=155, PETRI_TRANSITIONS=128} [2024-11-19 09:43:11,149 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 37 predicate places. [2024-11-19 09:43:11,149 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 128 transitions, 557 flow [2024-11-19 09:43:11,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 22.235294117647058) internal successors, (378), 17 states have internal predecessors, (378), 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 09:43:11,150 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:43:11,150 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:43:11,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2024-11-19 09:43:11,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-19 09:43:11,351 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-19 09:43:11,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:43:11,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1447423874, now seen corresponding path program 1 times [2024-11-19 09:43:11,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 09:43:11,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2066697006] [2024-11-19 09:43:11,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:43:11,352 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 09:43:11,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 09:43:11,353 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-19 09:43:11,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2024-11-19 09:43:12,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:43:12,162 INFO L255 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-19 09:43:12,164 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:43:12,171 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 09:43:12,242 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 09:43:12,299 INFO L349 Elim1Store]: treesize reduction 86, result has 31.2 percent of original size [2024-11-19 09:43:12,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 34 treesize of output 59 [2024-11-19 09:43:12,348 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 36 treesize of output 29 [2024-11-19 09:43:12,384 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 36 treesize of output 29 [2024-11-19 09:43:12,411 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 28 treesize of output 21 [2024-11-19 09:43:12,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 27 treesize of output 15 [2024-11-19 09:43:12,516 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:43:12,516 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:43:12,595 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_680 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_680) |c_~#c~0.base|) (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|))))))) is different from false [2024-11-19 09:43:12,716 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 09:43:12,717 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 29 treesize of output 30 [2024-11-19 09:43:12,733 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 09:43:12,733 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 52 treesize of output 55 [2024-11-19 09:43:12,739 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 09:43:13,741 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2024-11-19 09:43:13,742 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-19 09:43:13,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2066697006] [2024-11-19 09:43:13,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2066697006] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:43:13,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 09:43:13,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2024-11-19 09:43:13,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242508169] [2024-11-19 09:43:13,742 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 09:43:13,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 09:43:13,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-19 09:43:13,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 09:43:13,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=159, Unknown=14, NotChecked=26, Total=240 [2024-11-19 09:43:13,909 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 133 [2024-11-19 09:43:13,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 128 transitions, 557 flow. Second operand has 16 states, 16 states have (on average 32.125) internal successors, (514), 16 states have internal predecessors, (514), 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 09:43:13,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:43:13,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 133 [2024-11-19 09:43:13,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:43:16,224 INFO L124 PetriNetUnfolderBase]: 329/1030 cut-off events. [2024-11-19 09:43:16,225 INFO L125 PetriNetUnfolderBase]: For 182/182 co-relation queries the response was YES. [2024-11-19 09:43:16,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2077 conditions, 1030 events. 329/1030 cut-off events. For 182/182 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 6074 event pairs, 292 based on Foata normal form. 0/799 useless extension candidates. Maximal degree in co-relation 1886. Up to 679 conditions per place. [2024-11-19 09:43:16,230 INFO L140 encePairwiseOnDemand]: 125/133 looper letters, 78 selfloop transitions, 23 changer transitions 0/131 dead transitions. [2024-11-19 09:43:16,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 131 transitions, 767 flow [2024-11-19 09:43:16,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 09:43:16,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 09:43:16,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 415 transitions. [2024-11-19 09:43:16,232 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2836637047163363 [2024-11-19 09:43:16,232 INFO L175 Difference]: Start difference. First operand has 155 places, 128 transitions, 557 flow. Second operand 11 states and 415 transitions. [2024-11-19 09:43:16,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 131 transitions, 767 flow [2024-11-19 09:43:16,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 131 transitions, 682 flow, removed 11 selfloop flow, removed 13 redundant places. [2024-11-19 09:43:16,238 INFO L231 Difference]: Finished difference. Result has 151 places, 127 transitions, 514 flow [2024-11-19 09:43:16,238 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=514, PETRI_PLACES=151, PETRI_TRANSITIONS=127} [2024-11-19 09:43:16,241 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 33 predicate places. [2024-11-19 09:43:16,241 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 127 transitions, 514 flow [2024-11-19 09:43:16,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 32.125) internal successors, (514), 16 states have internal predecessors, (514), 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 09:43:16,241 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:43:16,242 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:43:16,252 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2024-11-19 09:43:16,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-19 09:43:16,442 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-19 09:43:16,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:43:16,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1784832204, now seen corresponding path program 1 times [2024-11-19 09:43:16,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 09:43:16,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1208845752] [2024-11-19 09:43:16,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:43:16,443 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 09:43:16,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 09:43:16,446 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-19 09:43:16,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2024-11-19 09:43:16,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:43:16,990 INFO L255 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 09:43:16,992 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:43:17,054 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 1 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:43:17,054 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:43:17,155 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 1 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:43:17,155 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-19 09:43:17,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1208845752] [2024-11-19 09:43:17,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1208845752] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:43:17,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 09:43:17,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2024-11-19 09:43:17,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678764952] [2024-11-19 09:43:17,156 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 09:43:17,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 09:43:17,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-19 09:43:17,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 09:43:17,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-11-19 09:43:17,158 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 133 [2024-11-19 09:43:17,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 127 transitions, 514 flow. Second operand has 12 states, 12 states have (on average 79.91666666666667) internal successors, (959), 12 states have internal predecessors, (959), 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 09:43:17,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:43:17,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 133 [2024-11-19 09:43:17,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:43:18,000 INFO L124 PetriNetUnfolderBase]: 127/698 cut-off events. [2024-11-19 09:43:18,000 INFO L125 PetriNetUnfolderBase]: For 493/494 co-relation queries the response was YES. [2024-11-19 09:43:18,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1548 conditions, 698 events. 127/698 cut-off events. For 493/494 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2987 event pairs, 105 based on Foata normal form. 12/608 useless extension candidates. Maximal degree in co-relation 1137. Up to 267 conditions per place. [2024-11-19 09:43:18,004 INFO L140 encePairwiseOnDemand]: 129/133 looper letters, 93 selfloop transitions, 23 changer transitions 0/179 dead transitions. [2024-11-19 09:43:18,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 179 transitions, 1190 flow [2024-11-19 09:43:18,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 09:43:18,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-19 09:43:18,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1008 transitions. [2024-11-19 09:43:18,007 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.631578947368421 [2024-11-19 09:43:18,007 INFO L175 Difference]: Start difference. First operand has 151 places, 127 transitions, 514 flow. Second operand 12 states and 1008 transitions. [2024-11-19 09:43:18,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 179 transitions, 1190 flow [2024-11-19 09:43:18,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 179 transitions, 1044 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-11-19 09:43:18,012 INFO L231 Difference]: Finished difference. Result has 159 places, 140 transitions, 692 flow [2024-11-19 09:43:18,012 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=692, PETRI_PLACES=159, PETRI_TRANSITIONS=140} [2024-11-19 09:43:18,013 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 41 predicate places. [2024-11-19 09:43:18,013 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 140 transitions, 692 flow [2024-11-19 09:43:18,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 79.91666666666667) internal successors, (959), 12 states have internal predecessors, (959), 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 09:43:18,014 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:43:18,014 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:43:18,027 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2024-11-19 09:43:18,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-19 09:43:18,215 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-19 09:43:18,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:43:18,215 INFO L85 PathProgramCache]: Analyzing trace with hash -470739532, now seen corresponding path program 2 times [2024-11-19 09:43:18,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 09:43:18,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1753210657] [2024-11-19 09:43:18,216 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:43:18,217 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 09:43:18,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 09:43:18,218 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-19 09:43:18,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2024-11-19 09:43:20,481 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:43:20,481 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:43:20,525 INFO L255 TraceCheckSpWp]: Trace formula consists of 1663 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 09:43:20,528 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:43:20,637 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2024-11-19 09:43:20,637 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:43:20,770 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2024-11-19 09:43:20,771 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-19 09:43:20,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1753210657] [2024-11-19 09:43:20,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1753210657] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:43:20,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 09:43:20,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2024-11-19 09:43:20,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946705571] [2024-11-19 09:43:20,771 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 09:43:20,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 09:43:20,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-19 09:43:20,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 09:43:20,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-19 09:43:20,773 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 133 [2024-11-19 09:43:20,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 140 transitions, 692 flow. Second operand has 6 states, 6 states have (on average 79.33333333333333) internal successors, (476), 6 states have internal predecessors, (476), 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 09:43:20,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:43:20,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 133 [2024-11-19 09:43:20,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:43:21,357 INFO L124 PetriNetUnfolderBase]: 129/935 cut-off events. [2024-11-19 09:43:21,357 INFO L125 PetriNetUnfolderBase]: For 923/924 co-relation queries the response was YES. [2024-11-19 09:43:21,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2211 conditions, 935 events. 129/935 cut-off events. For 923/924 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2708 event pairs, 105 based on Foata normal form. 0/833 useless extension candidates. Maximal degree in co-relation 1449. Up to 261 conditions per place. [2024-11-19 09:43:21,363 INFO L140 encePairwiseOnDemand]: 129/133 looper letters, 123 selfloop transitions, 6 changer transitions 0/192 dead transitions. [2024-11-19 09:43:21,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 192 transitions, 1418 flow [2024-11-19 09:43:21,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 09:43:21,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 09:43:21,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 528 transitions. [2024-11-19 09:43:21,365 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6616541353383458 [2024-11-19 09:43:21,365 INFO L175 Difference]: Start difference. First operand has 159 places, 140 transitions, 692 flow. Second operand 6 states and 528 transitions. [2024-11-19 09:43:21,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 192 transitions, 1418 flow [2024-11-19 09:43:21,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 192 transitions, 1394 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 09:43:21,373 INFO L231 Difference]: Finished difference. Result has 165 places, 143 transitions, 759 flow [2024-11-19 09:43:21,373 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=759, PETRI_PLACES=165, PETRI_TRANSITIONS=143} [2024-11-19 09:43:21,373 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 47 predicate places. [2024-11-19 09:43:21,373 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 143 transitions, 759 flow [2024-11-19 09:43:21,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 79.33333333333333) internal successors, (476), 6 states have internal predecessors, (476), 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 09:43:21,374 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:43:21,374 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1] [2024-11-19 09:43:21,401 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 (19)] Ended with exit code 0 [2024-11-19 09:43:21,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-19 09:43:21,575 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-19 09:43:21,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:43:21,575 INFO L85 PathProgramCache]: Analyzing trace with hash -470739492, now seen corresponding path program 2 times [2024-11-19 09:43:21,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 09:43:21,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1935713957] [2024-11-19 09:43:21,576 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:43:21,576 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 09:43:21,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 09:43:21,577 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-19 09:43:21,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2024-11-19 09:43:23,954 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:43:23,954 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:43:23,998 INFO L255 TraceCheckSpWp]: Trace formula consists of 1664 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 09:43:24,002 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:43:24,172 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 2 proven. 415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:43:24,172 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:43:24,557 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 2 proven. 415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:43:24,558 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-19 09:43:24,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1935713957] [2024-11-19 09:43:24,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1935713957] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:43:24,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 09:43:24,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2024-11-19 09:43:24,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865568603] [2024-11-19 09:43:24,558 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 09:43:24,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-19 09:43:24,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-19 09:43:24,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-19 09:43:24,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2024-11-19 09:43:24,563 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 133 [2024-11-19 09:43:24,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 143 transitions, 759 flow. Second operand has 24 states, 24 states have (on average 80.45833333333333) internal successors, (1931), 24 states have internal predecessors, (1931), 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 09:43:24,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:43:24,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 133 [2024-11-19 09:43:24,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:43:27,165 INFO L124 PetriNetUnfolderBase]: 129/1439 cut-off events. [2024-11-19 09:43:27,165 INFO L125 PetriNetUnfolderBase]: For 4077/4078 co-relation queries the response was YES. [2024-11-19 09:43:27,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3828 conditions, 1439 events. 129/1439 cut-off events. For 4077/4078 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2859 event pairs, 105 based on Foata normal form. 48/1386 useless extension candidates. Maximal degree in co-relation 3062. Up to 274 conditions per place. [2024-11-19 09:43:27,170 INFO L140 encePairwiseOnDemand]: 129/133 looper letters, 156 selfloop transitions, 47 changer transitions 0/266 dead transitions. [2024-11-19 09:43:27,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 266 transitions, 2129 flow [2024-11-19 09:43:27,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-19 09:43:27,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-19 09:43:27,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1986 transitions. [2024-11-19 09:43:27,174 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6221804511278195 [2024-11-19 09:43:27,174 INFO L175 Difference]: Start difference. First operand has 165 places, 143 transitions, 759 flow. Second operand 24 states and 1986 transitions. [2024-11-19 09:43:27,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 266 transitions, 2129 flow [2024-11-19 09:43:27,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 266 transitions, 2127 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:43:27,187 INFO L231 Difference]: Finished difference. Result has 200 places, 168 transitions, 1349 flow [2024-11-19 09:43:27,187 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=757, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1349, PETRI_PLACES=200, PETRI_TRANSITIONS=168} [2024-11-19 09:43:27,188 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 82 predicate places. [2024-11-19 09:43:27,188 INFO L471 AbstractCegarLoop]: Abstraction has has 200 places, 168 transitions, 1349 flow [2024-11-19 09:43:27,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 80.45833333333333) internal successors, (1931), 24 states have internal predecessors, (1931), 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 09:43:27,189 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:43:27,189 INFO L204 CegarLoopForPetriNet]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 2, 1, 1, 1, 1, 1] [2024-11-19 09:43:27,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2024-11-19 09:43:27,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-19 09:43:27,390 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-19 09:43:27,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:43:27,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1315070684, now seen corresponding path program 3 times [2024-11-19 09:43:27,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 09:43:27,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [775819939] [2024-11-19 09:43:27,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:43:27,392 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 09:43:27,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 09:43:27,393 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-19 09:43:27,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process